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</div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><p><b>Dioxygen complexes</b> are <a href="/wiki/Coordination_compound" class="mw-redirect" title="Coordination compound">coordination compounds</a> that contain O<sub>2</sub> as a <a href="/wiki/Ligand" title="Ligand">ligand</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> The study of these compounds is inspired by oxygen-carrying proteins such as <a href="/wiki/Myoglobin" title="Myoglobin">myoglobin</a>, <a href="/wiki/Hemoglobin" title="Hemoglobin">hemoglobin</a>, <a href="/wiki/Hemerythrin" title="Hemerythrin">hemerythrin</a>, and <a href="/wiki/Hemocyanin" title="Hemocyanin">hemocyanin</a>.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> Several <a href="/wiki/Transition_metal" title="Transition metal">transition metals</a> form complexes with O<sub>2</sub>, and many of these complexes form reversibly.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> The binding of O<sub>2</sub> is the first step in many important phenomena, such as <a href="/wiki/Cellular_respiration" title="Cellular respiration">cellular respiration</a>, <a href="/wiki/Corrosion" title="Corrosion">corrosion</a>, and industrial chemistry. The first synthetic oxygen complex was demonstrated in 1938 with cobalt(II) complex reversibly bound O<sub>2</sub>.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Mononuclear_complexes_of_O2">Mononuclear complexes of O<sub>2</sub></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Transition_metal_dioxygen_complex&action=edit&section=1" title="Edit section: Mononuclear complexes of O2"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>O<sub>2</sub> binds to a single metal center either "end-on" (<a href="/wiki/Hapticity" title="Hapticity"><i>η</i><sup>1</sup>-</a>) or "side-on" (<i>η</i><sup>2</sup>-). The bonding and structures of these compounds are usually evaluated by single-crystal <a href="/wiki/X-ray_crystallography" title="X-ray crystallography">X-ray crystallography</a>, focusing both on the overall geometry as well as the O–O distances, which reveals the <a href="/wiki/Bond_order" title="Bond order">bond order</a> of the O<sub>2</sub> ligand. </p> <dl><dd><span typeof="mw:File"><a href="/wiki/File:TMdioxygenCmpx.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f6/TMdioxygenCmpx.png/220px-TMdioxygenCmpx.png" decoding="async" width="220" height="116" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f6/TMdioxygenCmpx.png/330px-TMdioxygenCmpx.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f6/TMdioxygenCmpx.png/440px-TMdioxygenCmpx.png 2x" data-file-width="954" data-file-height="505" /></a></span></dd></dl> <div class="mw-heading mw-heading3"><h3 id="Complexes_of_η1-O2_ligands"><span id="Complexes_of_.CE.B71-O2_ligands"></span>Complexes of <i>η</i><sup>1</sup>-O<sub>2</sub> ligands</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Transition_metal_dioxygen_complex&action=edit&section=2" title="Edit section: Complexes of η1-O2 ligands"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:PicketFenceGenericRevised.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d4/PicketFenceGenericRevised.png/220px-PicketFenceGenericRevised.png" decoding="async" width="220" height="139" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d4/PicketFenceGenericRevised.png/330px-PicketFenceGenericRevised.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d4/PicketFenceGenericRevised.png/440px-PicketFenceGenericRevised.png 2x" data-file-width="1094" data-file-height="689" /></a><figcaption>A picket-fence porphyrin complex of Fe, with axial coordination sites occupied by methylimidazole (green) and <a href="/wiki/Dioxygen" class="mw-redirect" title="Dioxygen">dioxygen</a> (R = amide groups).<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup></figcaption></figure> <p>O<sub>2</sub> <a href="/wiki/Adduct" title="Adduct">adducts</a> derived from <a href="/wiki/Cobalt" title="Cobalt">cobalt</a>(II) and <a href="/wiki/Iron" title="Iron">iron</a>(II) complexes of <a href="/wiki/Porphyrin" title="Porphyrin">porphyrin</a> (and related anionic macrocyclic ligands) exhibit this bonding mode. Myoglobin and hemoglobin are famous examples, and many synthetic analogues have been described that behave similarly. Binding of O<sub>2</sub> is usually described as proceeding by <a href="/wiki/Electron_transfer" title="Electron transfer">electron transfer</a> from the metal(II) center to give <a href="/wiki/Superoxide" title="Superoxide">superoxide</a> (<span class="chemf nowrap">O<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline">−</sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">2</sub></span></span></span>) complexes of metal(III) centers. As shown by the mechanisms of <a href="/wiki/Cytochrome_P450" title="Cytochrome P450">cytochrome P450</a> and <a href="/wiki/Alpha-ketoglutarate-dependent_hydroxylase" class="mw-redirect" title="Alpha-ketoglutarate-dependent hydroxylase">alpha-ketoglutarate-dependent hydroxylase</a>, Fe-<i>η</i><sup>1</sup>-O<sub>2</sub> bonding is conducive to formation of Fe(IV) oxo centers. O<sub>2</sub> can bind to one metal of a bimetallic unit via the same modes discussed above for mononuclear complexes. A well-known example is the active site of the protein <a href="/wiki/Hemerythrin" title="Hemerythrin">hemerythrin</a>, which features a diiron <a href="/wiki/Carboxylate" title="Carboxylate">carboxylate</a> that binds O<sub>2</sub> at one Fe center. Dinuclear complexes can also cooperate in the binding, although the initial attack of O<sub>2</sub> probably occurs at a single metal. </p> <div class="mw-heading mw-heading3"><h3 id="Complexes_of_η2-O2_ligands"><span id="Complexes_of_.CE.B72-O2_ligands"></span>Complexes of <i>η</i><sup>2</sup>-O<sub>2</sub> ligands</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Transition_metal_dioxygen_complex&action=edit&section=3" title="Edit section: Complexes of η2-O2 ligands"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><i>η</i><sup>2</sup>-bonding is the most common motif seen in coordination chemistry of dioxygen. Such complexes can be generated by treating low-valent metal complexes with oxygen. For example, <a href="/wiki/Vaska%27s_complex" title="Vaska's complex">Vaska's complex</a> reversibly binds O<sub>2</sub> (Ph = C<sub>6</sub>H<sub>5</sub>): </p> <dl><dd>IrCl(CO)(PPh<sub>3</sub>)<sub>2</sub> + O<sub>2</sub> ⇌ IrCl(CO)(PPh<sub>3</sub>)<sub>2</sub>O<sub>2</sub></dd></dl> <p>The conversion is described as a 2 e<sup>−</sup> <a href="/wiki/Redox" title="Redox">redox</a> process: Ir(I) converts to Ir(III) as dioxygen converts to <a href="/wiki/Metal_peroxide" title="Metal peroxide">peroxide</a>. Since O<sub>2</sub> has a triplet ground state and Vaska's complex is a singlet, the reaction is slower than when <a href="/wiki/Singlet_oxygen" title="Singlet oxygen">singlet oxygen</a> is used.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> The magnetic properties of some <i>η</i><sup>2</sup>-O<sub>2</sub> complexes show that the ligand, in fact, is superoxide, not peroxide.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p><p>Most complexes of <i>η</i><sup>2</sup>-O<sub>2</sub> are generated using <a href="/wiki/Hydrogen_peroxide" title="Hydrogen peroxide">hydrogen peroxide</a>, not from O<sub>2</sub>. <a href="/wiki/Chromate_ion" class="mw-redirect" title="Chromate ion">Chromate</a> ([CrO<sub>4</sub>)]<sup>2−</sup>) can for example be converted to <a href="/wiki/Tetraperoxochromate" class="mw-redirect" title="Tetraperoxochromate">the tetraperoxide</a> [Cr(O<sub>2</sub>)<sub>4</sub>]<sup>2−</sup>. The reaction of hydrogen peroxide with aqueous titanium(IV) gives a brightly colored peroxy complex that is a useful test for titanium as well as hydrogen peroxide.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Binuclear_complexes_of_O2">Binuclear complexes of O<sub>2</sub></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Transition_metal_dioxygen_complex&action=edit&section=4" title="Edit section: Binuclear complexes of O2"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Oxyhemocyanin_full.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/41/Oxyhemocyanin_full.png/220px-Oxyhemocyanin_full.png" decoding="async" width="220" height="166" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/4/41/Oxyhemocyanin_full.png 1.5x" data-file-width="316" data-file-height="239" /></a><figcaption>O<sub>2</sub>-bound form of hemocyanin, the O<sub>2</sub> carrier for certain molluscs.</figcaption></figure> <p>These binding modes include <i>μ</i><sub>2</sub>-<i>η</i><sup>2</sup>,<i>η</i><sup>2</sup>-, <i>μ</i><sub>2</sub>-<i>η</i><sup>1</sup>,<i>η</i><sup>1</sup>-, and <i>μ</i><sub>2</sub>-<i>η</i><sup>1</sup>,<i>η</i><sup>2</sup>-. Depending on the degree of electron-transfer from the dimetal unit, these O<sub>2</sub> ligands can again be described as peroxo or superoxo. <a href="/wiki/Hemocyanin" title="Hemocyanin">Hemocyanin</a> is an O<sub>2</sub>-carrier that utilizes a bridging O2 binding motif. It features a pair of <a href="/wiki/Copper" title="Copper">copper</a> centers.<sup id="cite_ref-Tolman_10-0" class="reference"><a href="#cite_note-Tolman-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p> <dl><dd><span typeof="mw:File"><a href="/wiki/File:Dimetal_dioxygen_complexes_(molecular_diagrams).png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6c/Dimetal_dioxygen_complexes_%28molecular_diagrams%29.png/420px-Dimetal_dioxygen_complexes_%28molecular_diagrams%29.png" decoding="async" width="420" height="80" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6c/Dimetal_dioxygen_complexes_%28molecular_diagrams%29.png/630px-Dimetal_dioxygen_complexes_%28molecular_diagrams%29.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6c/Dimetal_dioxygen_complexes_%28molecular_diagrams%29.png/840px-Dimetal_dioxygen_complexes_%28molecular_diagrams%29.png 2x" data-file-width="1899" data-file-height="360" /></a></span></dd></dl> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:DOESCF10.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8d/DOESCF10.svg/220px-DOESCF10.svg.png" decoding="async" width="220" height="172" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8d/DOESCF10.svg/330px-DOESCF10.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8d/DOESCF10.svg/440px-DOESCF10.svg.png 2x" data-file-width="1039" data-file-height="810" /></a><figcaption>Structure of [Co(salen)(<a href="/wiki/Dimethylformamide" title="Dimethylformamide">dmf</a>)]<sub>2</sub>O<sub>2</sub>.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup></figcaption></figure><p>. </p><p><a href="/wiki/Salcomine" title="Salcomine">Salcomine</a>, the cobalt(II) complex of <a href="/wiki/Salen_ligand" title="Salen ligand">salen ligand</a> is the first synthetic O<sub>2</sub> carrier.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> Solvated derivatives of the solid complex bind 0.5 equivalent of O<sub>2</sub>: </p> <dl><dd>2 Co(salen) + O<sub>2</sub> → [Co(salen)]<sub>2</sub>O<sub>2</sub></dd></dl> <p>Reversible electron transfer reactions are observed in some dinuclear O<sub>2</sub> complexes.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> </p> <figure class="mw-halign-center" typeof="mw:File/Thumb"><a href="/wiki/File:Co2O2noparam.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/43/Co2O2noparam.svg/398px-Co2O2noparam.svg.png" decoding="async" width="398" height="85" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/43/Co2O2noparam.svg/597px-Co2O2noparam.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/43/Co2O2noparam.svg/796px-Co2O2noparam.svg.png 2x" data-file-width="531" data-file-height="113" /></a><figcaption>Oxidation of the dicobalt peroxy complex gives the complex of superoxide (O<sub>2</sub><sup>−</sup>). The Co-O-O-Co core flattens in the process and the O-O distance contracts by 10%.</figcaption></figure> <div class="mw-heading mw-heading2"><h2 id="Relationship_to_other_oxygenic_ligands_and_applications">Relationship to other oxygenic ligands and applications</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Transition_metal_dioxygen_complex&action=edit&section=5" title="Edit section: Relationship to other oxygenic ligands and applications"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Dioxygen complexes are the precursors to other families of oxygenic ligands. Metal oxo compounds arise from the cleavage of the O–O bond after complexation. <a href="/wiki/Hydroperoxide" title="Hydroperoxide">Hydroperoxo</a> complexes are generated in the course of the reduction of dioxygen by metals. The reduction of O<sub>2</sub> by metal catalysts is a key <a href="/wiki/Half-reaction" title="Half-reaction">half-reaction</a> in <a href="/wiki/Fuel_cell" title="Fuel cell">fuel cells</a>. </p><p>Metal-catalyzed oxidations with O<sub>2</sub> proceed via the intermediacy of dioxygen complexes, although the actual oxidants are often oxo derivatives. The reversible binding of O<sub>2</sub> to metal complexes has been used as a means to purify oxygen from air, but cryogenic distillation of <a href="/wiki/Liquid_air" title="Liquid air">liquid air</a> remains the dominant technology. </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Transition_metal_dioxygen_complex&action=edit&section=6" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFYeeTolman2015" class="citation book cs1">Yee, Gereon M.; Tolman, William B. (2015). "Chapter 5: Transition Metal Complexes and the Activation of Dioxygen". In Kroneck, Peter M. H.; Sosa Torres, Martha E. (eds.). <i>Sustaining Life on Planet Earth: Metalloenzymes Mastering Dioxygen and Other Chewy Gases</i>. Metal Ions in Life Sciences. Vol. 15. Springer. pp. <span class="nowrap">131–</span>204. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2F978-3-319-12415-5_5">10.1007/978-3-319-12415-5_5</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-3-319-12414-8" title="Special:BookSources/978-3-319-12414-8"><bdi>978-3-319-12414-8</bdi></a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/25707468">25707468</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Chapter+5%3A+Transition+Metal+Complexes+and+the+Activation+of+Dioxygen&rft.btitle=Sustaining+Life+on+Planet+Earth%3A+Metalloenzymes+Mastering+Dioxygen+and+Other+Chewy+Gases&rft.series=Metal+Ions+in+Life+Sciences&rft.pages=%3Cspan+class%3D%22nowrap%22%3E131-%3C%2Fspan%3E204&rft.pub=Springer&rft.date=2015&rft_id=info%3Apmid%2F25707468&rft_id=info%3Adoi%2F10.1007%2F978-3-319-12415-5_5&rft.isbn=978-3-319-12414-8&rft.aulast=Yee&rft.aufirst=Gereon+M.&rft.au=Tolman%2C+William+B.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATransition+metal+dioxygen+complex" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHollemanWiberg2001" class="citation book cs1">Holleman, A. F.; Wiberg, E. (2001). <i>Inorganic Chemistry</i>. San Diego, CA: Academic Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-12-352651-5" title="Special:BookSources/0-12-352651-5"><bdi>0-12-352651-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Inorganic+Chemistry&rft.place=San+Diego%2C+CA&rft.pub=Academic+Press&rft.date=2001&rft.isbn=0-12-352651-5&rft.aulast=Holleman&rft.aufirst=A.+F.&rft.au=Wiberg%2C+E.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATransition+metal+dioxygen+complex" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLippardBerg1994" class="citation book cs1">Lippard, S. J.; Berg, J. M. (1994). <i>Principles of Bioinorganic Chemistry</i>. Mill Valley, CA: University Science Books. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-935702-73-3" title="Special:BookSources/0-935702-73-3"><bdi>0-935702-73-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Principles+of+Bioinorganic+Chemistry&rft.place=Mill+Valley%2C+CA&rft.pub=University+Science+Books&rft.date=1994&rft.isbn=0-935702-73-3&rft.aulast=Lippard&rft.aufirst=S.+J.&rft.au=Berg%2C+J.+M.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATransition+metal+dioxygen+complex" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBerry2004" class="citation encyclopaedia cs1">Berry, R. E. (2004). "Reactivity and Structure of Complexes of Small Molecules: Dioxygen". <i>Comprehensive Coordination Chemistry II</i>. Vol. 1. pp. <span class="nowrap">625–</span>629. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2FB0-08-043748-6%2F01161-0">10.1016/B0-08-043748-6/01161-0</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-08-043748-4" title="Special:BookSources/978-0-08-043748-4"><bdi>978-0-08-043748-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Reactivity+and+Structure+of+Complexes+of+Small+Molecules%3A+Dioxygen&rft.btitle=Comprehensive+Coordination+Chemistry+II&rft.pages=%3Cspan+class%3D%22nowrap%22%3E625-%3C%2Fspan%3E629&rft.date=2004&rft_id=info%3Adoi%2F10.1016%2FB0-08-043748-6%2F01161-0&rft.isbn=978-0-08-043748-4&rft.aulast=Berry&rft.aufirst=R.+E.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATransition+metal+dioxygen+complex" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTsumaki1938" class="citation journal cs1">Tsumaki, Tokuichi (1938). <a rel="nofollow" class="external text" href="https://doi.org/10.1246%2Fbcsj.13.252">"Nebenvalenzringverbindungen. 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On some inner-complex cobalt salts of <a href="/wiki/Salen_ligand" title="Salen ligand">oxyaldimine</a>]. <i><a href="/wiki/Bulletin_of_the_Chemical_Society_of_Japan" title="Bulletin of the Chemical Society of Japan">Bulletin of the Chemical Society of Japan</a></i>. <b>13</b> (2): <span class="nowrap">252–</span>260. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1246%2Fbcsj.13.252">10.1246/bcsj.13.252</a></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Bulletin+of+the+Chemical+Society+of+Japan&rft.atitle=Nebenvalenzringverbindungen.+IV.+%C3%9Cber+einige+innerkomplexe+Kobaltsalze+der+Oxyaldimine&rft.volume=13&rft.issue=2&rft.pages=%3Cspan+class%3D%22nowrap%22%3E252-%3C%2Fspan%3E260&rft.date=1938&rft_id=info%3Adoi%2F10.1246%2Fbcsj.13.252&rft.aulast=Tsumaki&rft.aufirst=Tokuichi&rft_id=https%3A%2F%2Fdoi.org%2F10.1246%252Fbcsj.13.252&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATransition+metal+dioxygen+complex" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text">S. 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(2017). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5963733">"Copper–Oxygen Complexes Revisited: Structures, Spectroscopy, and Reactivity"</a>. <i>Chemical Reviews</i>. <b>117</b> (3): <span class="nowrap">2059–</span>2107. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1021%2Facs.chemrev.6b00636">10.1021/acs.chemrev.6b00636</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5963733">5963733</a></span>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/28103018">28103018</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Chemical+Reviews&rft.atitle=Copper%E2%80%93Oxygen+Complexes+Revisited%3A+Structures%2C+Spectroscopy%2C+and+Reactivity&rft.volume=117&rft.issue=3&rft.pages=%3Cspan+class%3D%22nowrap%22%3E2059-%3C%2Fspan%3E2107&rft.date=2017&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC5963733%23id-name%3DPMC&rft_id=info%3Apmid%2F28103018&rft_id=info%3Adoi%2F10.1021%2Facs.chemrev.6b00636&rft.aulast=Elwell&rft.aufirst=Courtney+E.&rft.au=Gagnon%2C+Nicole+L.&rft.au=Neisen%2C+Benjamin+D.&rft.au=Dhar%2C+Debanjan&rft.au=Spaeth%2C+Andrew+D.&rft.au=Yee%2C+Gereon+M.&rft.au=Tolman%2C+William+B.&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC5963733&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATransition+metal+dioxygen+complex" class="Z3988"></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFM._CalligarisG._NardinL._RandaccioA._Ripamonti1970" class="citation journal cs1">M. Calligaris; G. Nardin; L. Randaccio; A. Ripamonti (1970). "Structural Aspects of the Synthetic Oxygen-Carrier NN′-Ethylenebis(Salicylideneiminato)cobalt(II): Structure of the Addition Compound with Oxygen Containing Dimethylformamide". <i>J. Chem. Soc. A</i>: 1069. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1039%2Fj19700001069">10.1039/j19700001069</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=J.+Chem.+Soc.+A&rft.atitle=Structural+Aspects+of+the+Synthetic+Oxygen-Carrier+NN%E2%80%B2-Ethylenebis%28Salicylideneiminato%29cobalt%28II%29%3A+Structure+of+the+Addition+Compound+with+Oxygen+Containing+Dimethylformamide&rft.pages=1069&rft.date=1970&rft_id=info%3Adoi%2F10.1039%2Fj19700001069&rft.au=M.+Calligaris&rft.au=G.+Nardin&rft.au=L.+Randaccio&rft.au=A.+Ripamonti&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATransition+metal+dioxygen+complex" class="Z3988"></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTokuichi_Tsumaki1938" class="citation journal cs1">Tokuichi Tsumaki (1938). <a rel="nofollow" class="external text" href="https://doi.org/10.1246%2Fbcsj.13.252">"Nebenvalenzringverbindungen. IV. Über einige innerkomplexe Kobaltsalze der Oxyaldimine"</a>. <i><a href="/wiki/Bulletin_of_the_Chemical_Society_of_Japan" title="Bulletin of the Chemical Society of Japan">Bulletin of the Chemical Society of Japan</a></i>. <b>13</b> (2): <span class="nowrap">252–</span>260. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1246%2Fbcsj.13.252">10.1246/bcsj.13.252</a></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Bulletin+of+the+Chemical+Society+of+Japan&rft.atitle=Nebenvalenzringverbindungen.+IV.+%C3%9Cber+einige+innerkomplexe+Kobaltsalze+der+Oxyaldimine&rft.volume=13&rft.issue=2&rft.pages=%3Cspan+class%3D%22nowrap%22%3E252-%3C%2Fspan%3E260&rft.date=1938&rft_id=info%3Adoi%2F10.1246%2Fbcsj.13.252&rft.au=Tokuichi+Tsumaki&rft_id=https%3A%2F%2Fdoi.org%2F10.1246%252Fbcsj.13.252&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATransition+metal+dioxygen+complex" class="Z3988"></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSchaefer1968" class="citation journal cs1">Schaefer, William Palzer (1968). "Structure of Decaammine-μ-Peroxo-Dicobalt Disulfate Tetrahydrate". <i>Inorganic Chemistry</i>. <b>7</b> (4): <span class="nowrap">725–</span>731. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1021%2Fic50062a022">10.1021/ic50062a022</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Inorganic+Chemistry&rft.atitle=Structure+of+Decaammine-%CE%BC-Peroxo-Dicobalt+Disulfate+Tetrahydrate&rft.volume=7&rft.issue=4&rft.pages=%3Cspan+class%3D%22nowrap%22%3E725-%3C%2Fspan%3E731&rft.date=1968&rft_id=info%3Adoi%2F10.1021%2Fic50062a022&rft.aulast=Schaefer&rft.aufirst=William+Palzer&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATransition+metal+dioxygen+complex" class="Z3988"></span></span> </li> </ol></div> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist 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abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Coordination_complexes" title="Template:Coordination complexes"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Coordination_complexes" title="Template talk:Coordination complexes"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Coordination_complexes" title="Special:EditPage/Template:Coordination complexes"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Coordination_complexes113" style="font-size:114%;margin:0 4em"><a href="/wiki/Coordination_complex" title="Coordination complex">Coordination complexes</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">H donors:</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Transition_metal_hydride" title="Transition metal hydride">H<sup>−</sup></a></li> <li><a href="/wiki/Dihydrogen_complex" title="Dihydrogen complex">H<sub>2</sub></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">B donors:</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Transition_metal_boryl_complex" title="Transition metal boryl complex">BR<sub>2</sub><sup>−</sup></a></li> <li><a href="/wiki/Metallaborane" title="Metallaborane">B<sub>m</sub>H<sub>n</sub></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">C donors:</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Transition_metal_alkyl_complexes" title="Transition metal alkyl complexes">R<sup>−</sup></a></li> <li><a href="/wiki/Transition_metal_acyl_complexes" title="Transition metal acyl complexes">RC(O)<sup>−</sup></a></li> <li><a href="/wiki/Transition_metal_formyl_complex" title="Transition metal formyl complex">HC(O)<sup>−</sup></a></li> <li><a href="/wiki/Transition-metal_allyl_complex" title="Transition-metal allyl complex">CH<sub>2</sub>＝CH-CH<sub>2</sub><sup>−</sup></a></li> <li><a href="/wiki/Trimethylenemethane_complexes" title="Trimethylenemethane complexes">C(CH<sub>2</sub>)<sub>3</sub></a></li> <li><a href="/wiki/Transition_metal_alkene_complex" title="Transition metal alkene complex">CH<sub>2</sub>＝CH<sub>2</sub></a></li> <li><a href="/wiki/Transition_metal_alkyne_complex" title="Transition metal alkyne complex">RC<sub>2</sub>R</a></li> <li><a href="/wiki/Transition_metal_benzyne_complex" title="Transition metal benzyne complex">C<sub>6</sub>H<sub>4</sub></a></li> <li><a href="/wiki/Cyanometalate" title="Cyanometalate">CN<sup>−</sup></a></li> <li><a href="/wiki/Metal_carbonyl" title="Metal carbonyl">CO</a></li> <li><a href="/wiki/Metal_carbon_dioxide_complex" title="Metal carbon dioxide complex">CO<sub>2</sub></a></li> <li><a href="/wiki/Transition_metal_carbide" class="mw-redirect" title="Transition metal carbide">C<sup>4-</sup></a></li> <li><a href="/wiki/Transition_metal_arene_complex" title="Transition metal arene complex">C<sub>6</sub>R<sub>6</sub></a></li> <li><a href="/wiki/Transition_metal_fullerene_complex" title="Transition metal fullerene complex">C<sub>60</sub> & C<sub>70</sub></a></li> <li><a href="/wiki/Transition_metal_isocyanide_complexes" title="Transition metal isocyanide complexes">RNC</a></li> <li><a href="/wiki/Transition_metal_carbene_complex" title="Transition metal carbene complex">=CR<sub>2</sub></a></li> <li><a href="/wiki/Transition_metal_carbyne_complex" title="Transition metal carbyne complex">≡CR</a></li> <li><a href="/wiki/Metallocene" title="Metallocene">C<sub>5</sub>H<sub>5</sub><sup>−</sup></a></li> <li><a href="/wiki/Transition_metal_indenyl_complex" title="Transition metal indenyl complex">C<sub>9</sub>H<sub>7</sub><sup>−</sup></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Si donors:</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Transition_metal_silane_complexes" class="mw-redirect" title="Transition metal silane complexes">H<sub>n</sub>SiR<sub>4−n</sub></a></li> <li><a href="/wiki/Transition_metal_silyl_complexes" title="Transition metal silyl complexes">R<sub>3</sub>Si<sup>−</sup></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">N donors:</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Metal_ammine_complex" title="Metal ammine complex">NH<sub>3</sub></a></li> <li><a href="/wiki/Transition_metal_azide_complex" title="Transition metal azide complex">N<sub>3</sub><sup>−</sup></a></li> <li><a href="/wiki/Transition_metal_imidazole_complex" title="Transition metal imidazole complex">imidazole</a></li> <li><a href="/wiki/Metal_nitrosyl_complex" title="Metal nitrosyl complex">NO</a></li> <li><a href="/wiki/Transition_metal_nitroso_complexes" title="Transition metal nitroso complexes">RNO</a></li> <li><a href="/wiki/Transition_metal_nitrite_complex#Bonding_modes" title="Transition metal nitrite complex">NO<sub>2</sub><sup>−</sup></a></li> <li><a href="/wiki/Transition_metal_pyridine_complexes" title="Transition metal pyridine complexes">py</a></li> <li><a href="/wiki/Transition_metal_amino_acid_complexes" title="Transition metal amino acid complexes">amino acid</a></li> <li><a href="/wiki/Metal_nitrido_complex" title="Metal nitrido complex">N<sup>3-</sup></a></li> <li><a href="/wiki/Transition_metal_imido_complex" title="Transition metal imido complex">RN<sup>2-</sup></a></li> <li><a href="/wiki/Transition_metal_nitrile_complexes" title="Transition metal nitrile complexes">RCN</a></li> <li><a href="/wiki/Transition_metal_complexes_of_2,2%27-bipyridine" title="Transition metal complexes of 2,2'-bipyridine">bipy</a></li> <li><a href="/wiki/Transition_metal_complexes_of_1,10-phenanthroline" title="Transition metal complexes of 1,10-phenanthroline">phen</a></li> <li><a href="/wiki/Transition_metal_porphyrin_complexes" title="Transition metal porphyrin complexes">porphyrin</a></li> <li><a href="/wiki/Metal_bis(trimethylsilyl)amides" title="Metal bis(trimethylsilyl)amides">(Me<sub>3</sub>Si)<sub>2</sub>N<sup>−</sup></a></li> <li><a href="/wiki/Transition_metal_dinitrogen_complex" title="Transition metal dinitrogen complex">N<sub>2</sub></a></li> <li><a href="/wiki/Transition_metal_complexes_of_thiocyanate" title="Transition metal complexes of thiocyanate"><i>N</i>CS<sup>−</sup></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">P donors:</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Metal_phosphine_complex" class="mw-redirect" title="Metal phosphine complex">PR<sub>3</sub></a></li> <li><a href="/wiki/Transition_metal_phosphido_complexes" title="Transition metal phosphido complexes">PR<sub>2</sub><sup>−</sup></a></li> <li><a href="/wiki/Transition_metal_complexes_of_phosphine_oxides#Secondary_phosphine_oxides_as_ligands" title="Transition metal complexes of phosphine oxides">PR<sub>2</sub>OH</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">O donors:</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Metal_aquo_complex" title="Metal aquo complex">H<sub>2</sub>O</a></li> <li><a href="/wiki/Transition_metal_hydroxide_complexes" title="Transition metal hydroxide complexes">OH<sup>−</sup></a></li> <li><a href="/wiki/Transition_metal_ether_complex" title="Transition metal ether complex">R<sub>2</sub>O</a></li> <li><a href="/wiki/Metal_alkoxide" class="mw-redirect" title="Metal alkoxide">RO<sup>−</sup></a></li> <li><a href="/wiki/Transition_metal_oxo_complex" title="Transition metal oxo complex">O<sup>2-</sup></a></li> <li><a class="mw-selflink selflink">O<sub>2</sub></a></li> <li><a href="/wiki/Transition_metal_carbonate_and_bicarbonate_complexes" title="Transition metal carbonate and bicarbonate complexes">CO<sub>3</sub><sup>2-</sup>/HCO<sub>3</sub><sup>−</sup></a></li> <li><a href="/wiki/Transition_metal_oxalate_complex" title="Transition metal oxalate complex">C<sub>2</sub>O<sub>4</sub><sup>2-</sup></a></li> <li><a href="/wiki/Transition_metal_carboxylate_complex" title="Transition metal carboxylate complex">RCO<sub>2</sub><sup>−</sup></a></li> <li><a href="/wiki/Metal_acetylacetonates" title="Metal acetylacetonates">acac</a></li> <li><a href="/wiki/Transition_metal_complexes_of_aldehydes_and_ketones" title="Transition metal complexes of aldehydes and ketones">R<sub>2</sub>CO</a></li> <li><a href="/wiki/Transition_metal_nitrite_complex" title="Transition metal nitrite complex">ONO<sup>−</sup></a></li> <li><a href="/wiki/Transition_metal_nitrate_complex" title="Transition metal nitrate complex">NO<sub>3</sub><sup>−</sup></a></li> <li><a href="/wiki/Transition_metal_perchlorate_complexes" title="Transition metal perchlorate complexes">ClO<sub>4</sub><sup>−</sup></a></li> <li><a href="/wiki/Transition_metal_complexes_of_pyridine-N-oxides" title="Transition metal complexes of pyridine-N-oxides">C<sub>5</sub>H<sub>5</sub>NO</a></li> <li><a href="/wiki/Transition_metal_sulfoxide_complex" title="Transition metal sulfoxide complex">OSR<sub>2</sub></a></li> <li><a href="/wiki/Transition_metal_sulfate_complex" title="Transition metal sulfate complex">SO<sub>4</sub><sup>2-</sup></a></li> <li><a href="/wiki/Transition_metal_phosphate_complex" title="Transition metal phosphate complex">PO<sub>4</sub><sup>3-</sup></a></li> <li><a href="/wiki/Transition_metal_complexes_of_phosphine_oxides" title="Transition metal complexes of phosphine oxides">OPR<sub>3</sub></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">S donors:</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Transition_metal_dithiocarbamate_complexes" title="Transition metal dithiocarbamate complexes">R<sub>2</sub>NCS<sub>2</sub><sup>−</sup></a></li> <li><a href="/wiki/Transition_metal_thiolate_complex" title="Transition metal thiolate complex">RS<sup>−</sup></a></li> <li><a href="/wiki/Transition_metal_thioether_complex" title="Transition metal thioether complex">R<sub>2</sub>S</a></li> <li><a href="/wiki/Metal_dithiolene_complex" title="Metal dithiolene complex">R<sub>2</sub>C<sub>2</sub>S<sub>2</sub><sup>2-</sup></a></li> <li><a href="/wiki/Metal_sulfur_dioxide_complex" title="Metal sulfur dioxide complex">SO<sub>2</sub></a></li> <li><a href="/wiki/Transition_metal_sulfito_complex" title="Transition metal sulfito complex">SO<sub>3</sub><sup>2-</sup></a></li> <li><a href="/wiki/Transition_metal_thiosulfate_complex" title="Transition metal thiosulfate complex">S<sub>2</sub>O<sub>3</sub><sup>2-</sup></a></li> <li><a href="/wiki/Transition_metal_sulfoxide_complex" title="Transition metal sulfoxide complex">SR<sub>2</sub>O</a></li> <li><a href="/wiki/Transition_metal_complexes_of_thiocyanate" title="Transition metal complexes of thiocyanate">NC<i>S</i><sup>−</sup></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Halide donors:</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/w/index.php?title=Fluoro_complex&action=edit&redlink=1" class="new" title="Fluoro complex (page does not exist)">F<sup>−</sup></a></li> <li><a href="/wiki/Difluorine_complex" title="Difluorine complex">F<sub>2</sub></a></li> <li><a href="/wiki/Transition_metal_chloride_complex" title="Transition metal chloride complex">Cl<sup>−</sup></a></li> <li><a href="/w/index.php?title=Bromo_complex&action=edit&redlink=1" class="new" title="Bromo complex (page does not exist)">Br<sup>−</sup></a></li> <li><a href="/w/index.php?title=Iodo_complex&action=edit&redlink=1" class="new" title="Iodo complex (page does not exist)">I<sup>−</sup></a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" 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