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class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r1084375498">.mw-parser-output .ib-chembox{border-collapse:collapse;text-align:left}.mw-parser-output .ib-chembox td,.mw-parser-output .ib-chembox th{border:1px solid #a2a9b1;width:40%}.mw-parser-output .ib-chembox td+td{width:60%}</style> <table class="infobox ib-chembox"> <caption>Selenium dichloride </caption> <tbody><tr> <th colspan="2" style="background: #f8eaba; text-align: center;">Identifiers </th></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/CAS_Registry_Number" title="CAS Registry Number">CAS Number</a></div> </td> <td><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li><span title="commonchemistry.cas.org"><a rel="nofollow" class="external text" href="https://commonchemistry.cas.org/detail?cas_rn=14457-70-6">14457-70-6</a></span></li></ul></div> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">3D model (<a href="/wiki/JSmol" class="mw-redirect" title="JSmol">JSmol</a>)</div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="chemapps.stolaf.edu (3D interactive model)"><a rel="nofollow" class="external text" href="https://chemapps.stolaf.edu/jmol/jmol.php?model=Cl%5BSe%5DCl">Interactive image</a></span></li></ul></div> </td></tr> <tr> <td><a href="/wiki/ChemSpider" title="ChemSpider">ChemSpider</a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="www.chemspider.com"><a rel="nofollow" class="external text" href="https://www.chemspider.com/Chemical-Structure.123257.html">123257</a></span></li></ul></div> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/PubChem" title="PubChem">PubChem</a> <abbr title="Compound ID">CID</abbr></div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="pubchem.ncbi.nlm.nih.gov"><a rel="nofollow" class="external text" href="https://pubchem.ncbi.nlm.nih.gov/compound/139762">139762</a></span></li></ul></div> </td></tr> <tr> <td><a href="/wiki/Unique_Ingredient_Identifier" title="Unique Ingredient Identifier">UNII</a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="precision.fda.gov"><a rel="nofollow" class="external text" href="https://precision.fda.gov/uniisearch/srs/unii/PDE7WQS0XY">PDE7WQS0XY</a></span></li></ul></div> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/CompTox_Chemicals_Dashboard" title="CompTox Chemicals Dashboard">CompTox Dashboard</a> <span style="font-weight:normal">(<abbr title="U.S. Environmental Protection Agency">EPA</abbr>)</span></div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="comptox.epa.gov"><a rel="nofollow" class="external text" href="https://comptox.epa.gov/dashboard/chemical/details/DTXSID80162756">DTXSID80162756</a> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q27286491#P3117" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></li></ul></div> </td></tr> <tr> <td colspan="2"><div class="collapsible-list mw-collapsible mw-collapsed" style="text-align: left;"> <div style="line-height: 1.6em; font-weight: bold; text-align:left; font-weight:normal; background:transparent;"><div><a href="/wiki/International_Chemical_Identifier" title="International Chemical Identifier">InChI</a></div></div> <ul class="mw-collapsible-content" style="margin-top: 0; margin-bottom: 0; line-height: inherit; list-style: none; margin-left: 0; word-break:break-all;"><li style="line-height: inherit; margin: 0"><div style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.5em; text-align:left;"><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">InChI=1S/Cl2Se/c1-3-2</div><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">Key: SWAKCLHCWHYEOW-UHFFFAOYSA-N</div></div></li></ul> </div> </td></tr> <tr> <td colspan="2"><div class="collapsible-list mw-collapsible mw-collapsed" style="text-align: left;"> <div style="line-height: 1.6em; font-weight: bold; text-align:left; font-weight:normal; background:transparent;"><div><a href="/wiki/Simplified_molecular-input_line-entry_system" class="mw-redirect" title="Simplified molecular-input line-entry system">SMILES</a></div></div> <ul class="mw-collapsible-content" style="margin-top: 0; margin-bottom: 0; line-height: inherit; list-style: none; margin-left: 0; word-break:break-all;"><li style="line-height: inherit; margin: 0"><div style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.6em; word-wrap:break-word; text-indent:-1.5em; text-align:left; font-size:97%; line-height:120%;">Cl[Se]Cl</div></li></ul> </div> </td></tr> <tr> <th colspan="2" style="background: #f8eaba; text-align: center;">Properties </th></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Chemical_formula" title="Chemical formula">Chemical formula</a></div> </td> <td><span title="Chlorine">Cl</span><sub>2</sub><span title="Selenium">Se</span> </td></tr> <tr> <td><a href="/wiki/Molar_mass" title="Molar mass">Molar mass</a> </td> <td><span class="nowrap"><span data-sort-value="7002149870000000000♠"></span>149.87</span> g·mol<sup>−1</sup>   </td></tr> <tr> <th colspan="2" style="background: #f8eaba; text-align: center;">Related compounds </th></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Other <a href="/wiki/Ion" title="Ion">anions</a></div> </td> <td><a href="/wiki/Selenium_dibromide" title="Selenium dibromide">Selenium dibromide</a>, <style data-mw-deduplicate="TemplateStyles:r1123817410">.mw-parser-output .template-chem2-su{display:inline-block;font-size:80%;line-height:1;vertical-align:-0.35em}.mw-parser-output .template-chem2-su>span{display:block;text-align:left}.mw-parser-output sub.template-chem2-sub{font-size:80%;vertical-align:-0.35em}.mw-parser-output sup.template-chem2-sup{font-size:80%;vertical-align:0.65em}</style><span class="chemf nowrap">SeBr<sub class="template-chem2-sub">2</sub></span> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Other <a href="/wiki/Ion" title="Ion">cations</a></div> </td> <td><a href="/wiki/Sulfur_dichloride" title="Sulfur dichloride">Sulfur dichloride</a>, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><span class="chemf nowrap">SCl<sub class="template-chem2-sub">2</sub></span><br /><a href="/wiki/Tellurium_dichloride" title="Tellurium dichloride">Tellurium dichloride</a>, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><span class="chemf nowrap">TeCl<sub class="template-chem2-sub">2</sub></span><br /><a href="/wiki/Polonium_dichloride" title="Polonium dichloride">Polonium dichloride</a>, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><span class="chemf nowrap">PoCl<sub class="template-chem2-sub">2</sub></span> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Related compounds</div> </td> <td><a href="/wiki/Selenium_tetrachloride" title="Selenium tetrachloride">Selenium tetrachloride</a>, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><span class="chemf nowrap">SeCl<sub class="template-chem2-sub">4</sub></span> </td></tr> <tr> <td colspan="2" style="text-align:left; background:#f8eaba; border:1px solid #a2a9b1;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Except where otherwise noted, data are given for materials in their <a href="/wiki/Standard_state" title="Standard state">standard state</a> (at 25 °C [77 °F], 100 kPa).</div> <div style="margin-top: 0.3em;"></div> <div style="margin-top: 0.3em; text-align: center;"><a href="/wiki/Wikipedia:Chemical_infobox#References" title="Wikipedia:Chemical infobox">Infobox references</a></div> </td></tr> </tbody></table><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Chemical compound</div> <p><b>Selenium dichloride</b> is the <a href="/wiki/Inorganic_compound" title="Inorganic compound">inorganic compound</a> with the formula SeCl<sub>2</sub>. It forms red-brown solutions in <a href="/wiki/Diethyl_ether" title="Diethyl ether">ethers</a>. Selenium dichloride has been prepared by treating gray <a href="/wiki/Selenium" title="Selenium">selenium</a> with <a href="/wiki/Sulfuryl_chloride" title="Sulfuryl chloride">sulfuryl chloride</a>. <a href="/wiki/Adduct" title="Adduct">Adducts</a> of selenium dichloride with <a href="/wiki/Thioether" class="mw-redirect" title="Thioether">thioethers</a> and <a href="/wiki/Thiourea" title="Thiourea">thioureas</a> are well characterized. Related complexes of <a href="/wiki/Tellurium_dichloride" title="Tellurium dichloride">tellurium dichloride</a> are known. </p> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:CEQKUE01.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e5/CEQKUE01.png/220px-CEQKUE01.png" decoding="async" width="220" height="271" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e5/CEQKUE01.png/330px-CEQKUE01.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e5/CEQKUE01.png/440px-CEQKUE01.png 2x" data-file-width="1200" data-file-height="1478" /></a><figcaption>Structure of SeCl<sub>2</sub>(<a href="/wiki/Tetrahydrothiophene" title="Tetrahydrothiophene">tetrahydrothiophene</a>)<sub>2</sub>.<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></figcaption></figure> <p>Solutions of selenium dichloride are unstable at room temperature, forming <a href="/wiki/Selenium_monochloride" title="Selenium monochloride">selenium monochloride</a> after several minutes at room temperature:<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> </p> <dl><dd>3 SeCl<sub>2</sub> → Se<sub>2</sub>Cl<sub>2</sub> + SeCl<sub>4</sub></dd></dl> <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=Selenium_dichloride&action=edit&section=1" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap"><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="CITEREFJolleys,_A.Levason,_W.Reid,_G.2013" class="citation journal cs1">Jolleys, A.; Levason, W.; Reid, G. (2013). "Thioether Coordination to Divalent Selenium Halide Acceptors – Synthesis, Properties and Structures". <i>Dalton Transactions</i>. <b>42</b> (8): 2963–2972. <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%2FC2DT32665E">10.1039/C2DT32665E</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/23250231">23250231</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Dalton+Transactions&rft.atitle=Thioether+Coordination+to+Divalent+Selenium+Halide+Acceptors+%E2%80%93+Synthesis%2C+Properties+and+Structures&rft.volume=42&rft.issue=8&rft.pages=2963-2972&rft.date=2013&rft_id=info%3Adoi%2F10.1039%2FC2DT32665E&rft_id=info%3Apmid%2F23250231&rft.au=Jolleys%2C+A.&rft.au=Levason%2C+W.&rft.au=Reid%2C+G.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASelenium+dichloride" 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="CITEREFMaaninen,_ArtoChivers,_TristramParvez,_MasoodPietikäinen,_Jarkko1999" class="citation journal cs1">Maaninen, Arto; Chivers, Tristram; Parvez, Masood; Pietikäinen, Jarkko; Laitinen, Risto S. (1999). "Syntheses of THF Solutions of SeX<sub>2</sub> (X = Cl, Br) and a New Route to Selenium Sulfides Se<sub>n</sub>S<sub>8−n</sub> (n = 1-5): X-Ray Crystal Structures of SeCl<sub>2</sub>(tht)<sub>2</sub> and SeCl<sub>2</sub>·tmtu". <i>Inorganic Chemistry</i>. <b>38</b>: 4093–4097. <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%2Fic981430h">10.1021/ic981430h</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=Syntheses+of+THF+Solutions+of+SeX%3Csub%3E2%3C%2Fsub%3E+%28X+%3D+Cl%2C+Br%29+and+a+New+Route+to+Selenium+Sulfides+Se%3Csub%3En%3C%2Fsub%3ES%3Csub%3E8%E2%88%92n%3C%2Fsub%3E+%28n+%3D+1-5%29%3A+X-Ray+Crystal+Structures+of+SeCl%3Csub%3E2%3C%2Fsub%3E%28tht%29%3Csub%3E2%3C%2Fsub%3E+and+SeCl%3Csub%3E2%3C%2Fsub%3E%C2%B7tmtu&rft.volume=38&rft.pages=4093-4097&rft.date=1999&rft_id=info%3Adoi%2F10.1021%2Fic981430h&rft.au=Maaninen%2C+Arto&rft.au=Chivers%2C+Tristram&rft.au=Parvez%2C+Masood&rft.au=Pietik%C3%A4inen%2C+Jarkko&rft.au=Laitinen%2C+Risto+S.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASelenium+dichloride" class="Z3988"></span></span> </li> </ol></div> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist 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li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a 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:Selenium_compounds" title="Template:Selenium compounds"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Selenium_compounds" title="Template talk:Selenium compounds"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Selenium_compounds" title="Special:EditPage/Template:Selenium compounds"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Selenium_compounds" style="font-size:114%;margin:0 4em"><a href="/wiki/Selenium" title="Selenium">Selenium</a> compounds</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Se(−II)</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/Selenide" title="Selenide">Se<sup>2−</sup></a></li> <li><a href="/wiki/Hydrogen_selenide" title="Hydrogen selenide">H<sub>2</sub>Se</a></li> <li><a href="/wiki/Aluminium_selenide" title="Aluminium selenide">Al<sub>2</sub>Se<sub>3</sub></a></li> <li><a href="/wiki/Antimony_triselenide" title="Antimony triselenide">Sb<sub>2</sub>Se<sub>3</sub></a></li> <li><a href="/wiki/Arsenic_triselenide" title="Arsenic triselenide">As<sub>2</sub>Se<sub>3</sub></a></li> <li><a href="/wiki/Bismuth_selenide" title="Bismuth selenide">Bi<sub>2</sub>Se<sub>3</sub></a></li> <li><a href="/wiki/Cadmium_selenide" title="Cadmium selenide">CdSe</a></li> <li><a href="/wiki/Calcium_selenide" title="Calcium selenide">CaSe</a></li> <li><a href="/wiki/Carbon_diselenide" title="Carbon diselenide">CSe<sub>2</sub></a></li> <li><a href="/wiki/Carbonyl_selenide" title="Carbonyl selenide">OCSe</a></li> <li><a href="/wiki/Chromium(II)_selenide" title="Chromium(II) selenide">CrSe</a></li> <li><a href="/wiki/Cobalt(II)_selenide" title="Cobalt(II) selenide">CoSe</a></li> <li><a href="/wiki/Copper_selenide" title="Copper selenide">CuSe</a></li> <li><a href="/wiki/Dimethyl_selenide" title="Dimethyl selenide">(CH<sub>3</sub>)<sub>2</sub>Se</a></li> <li><a href="/wiki/Gallium(II)_selenide" title="Gallium(II) selenide">GaSe</a></li> <li><a href="/wiki/Gallium(III)_selenide" title="Gallium(III) selenide">Ga<sub>2</sub>Se<sub>3</sub></a></li> <li><a href="/wiki/Germanium_monoselenide" title="Germanium monoselenide">GeSe</a></li> <li><a href="/wiki/Indium(III)_selenide" title="Indium(III) selenide">In<sub>2</sub>Se<sub>3</sub></a></li> <li><a href="/wiki/Iron(II)_selenide" title="Iron(II) selenide">FeSe</a></li> <li><a href="/wiki/Lead_selenide" title="Lead selenide">PbSe</a></li> <li><a href="/wiki/Magnesium_selenide" title="Magnesium selenide">MgSe</a></li> <li><a href="/wiki/Manganese(II)_selenide" title="Manganese(II) selenide">MnSe</a></li> <li><a href="/wiki/Manganese_diselenide" title="Manganese diselenide">MnSe<sub>2</sub></a></li> <li><a href="/wiki/Mercury_selenide" title="Mercury selenide">HgSe</a></li> <li><a href="/wiki/Molybdenum_diselenide" title="Molybdenum diselenide">MoSe<sub>2</sub></a></li> <li><a href="/wiki/Nickel_selenide" title="Nickel selenide">NiSe</a></li> <li><a href="/wiki/Niobium_diselenide" title="Niobium diselenide">NbSe<sub>2</sub></a></li> <li><a href="/wiki/Niobium_triselenide" title="Niobium triselenide">NbSe<sub>3</sub></a></li> <li><a href="/wiki/Phosphorus_selenide" title="Phosphorus selenide">P<sub><i>x</i></sub>Se<sub><i>y</i></sub></a></li> <li><a href="/wiki/Plutonium_selenide" title="Plutonium selenide">PuSe</a></li> <li><a href="/wiki/Rhenium_diselenide" title="Rhenium diselenide">ReSe<sub>2</sub></a></li> <li><a href="/wiki/Samarium_selenide" class="mw-redirect" title="Samarium selenide">Sm<sub>2</sub>Se<sub>3</sub></a></li> <li><a href="/wiki/Silver(I)_selenide" title="Silver(I) selenide">Ag<sub>2</sub>Se</a></li> <li><a href="/wiki/Sodium_selenide" title="Sodium selenide">Na<sub>2</sub>Se</a></li> <li><a href="/wiki/Tin_selenide" title="Tin selenide">SnSe</a></li> <li><a href="/wiki/Titanium_diselenide" title="Titanium diselenide">TiSe<sub>2</sub></a></li> <li><a href="/wiki/Tungsten_diselenide" title="Tungsten diselenide">WSe<sub>2</sub></a></li> <li><a href="/wiki/Uranium_diselenide" title="Uranium diselenide">USe<sub>2</sub></a></li> <li><a href="/wiki/Zinc_selenide" title="Zinc selenide">ZnSe</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Se(0,I)</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/Selenium_disulfide#Chemical_composition" title="Selenium disulfide">Se<sub>3</sub>S<sub>5</sub></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Se(I)</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/Selenium_hexasulfide" title="Selenium hexasulfide">Se<sub>2</sub>S<sub>6</sub></a></li> <li><a href="/wiki/Selenium_monochloride" title="Selenium monochloride">Se<sub>2</sub>Cl<sub>2</sub></a></li> <li><span class="chemf nowrap"><a href="/wiki/Selenocysteine" title="Selenocysteine">C<sub class="template-chem2-sub">3</sub>H<sub class="template-chem2-sub">7</sub>NO<sub class="template-chem2-sub">2</sub>Se</a></span></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Se(II)</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/Selenium_dibromide" title="Selenium dibromide">SeBr<sub>2</sub></a></li> <li><a class="mw-selflink selflink">SeCl<sub>2</sub></a></li> <li><a href="/wiki/Selenium_disulfide" title="Selenium disulfide">SeS<sub>2</sub></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Se(IV)</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><span class="chemf nowrap"><a href="/wiki/Selenite_(ion)" title="Selenite (ion)">SeO<span class="template-chem2-su"><span>2−</span><span>3</span></span></a></span></li> <li><a href="/wiki/Selenium_tetrabromide" title="Selenium tetrabromide">SeBr<sub>4</sub></a></li> <li><a href="/wiki/Selenium_tetrachloride" title="Selenium tetrachloride">SeCl<sub>4</sub></a></li> <li><a href="/wiki/Selenium_tetrafluoride" title="Selenium tetrafluoride">SeF<sub>4</sub></a></li> <li><a href="/wiki/Selenium_dioxide" title="Selenium dioxide">SeO<sub>2</sub></a></li> <li><a href="/wiki/Selenium_disulfide" title="Selenium disulfide">SeS<sub>2</sub></a></li> <li><a href="/wiki/Seleninyl_fluoride" title="Seleninyl fluoride">SeOF<sub>2</sub></a></li> <li><a href="/wiki/Selenium_oxydichloride" title="Selenium oxydichloride">SeOCl<sub>2</sub></a></li> <li><a href="/wiki/Selenium_oxybromide" title="Selenium oxybromide">SeOBr<sub>2</sub></a></li> <li><a href="/wiki/Selenous_acid" title="Selenous acid">H<sub>2</sub>SeO<sub>3</sub></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Se(VI)</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><span class="chemf nowrap"><a href="/wiki/Selenate" title="Selenate">SeO<span class="template-chem2-su"><span>2−</span><span>4</span></span></a></span></li> <li><a href="/wiki/Selenium_hexafluoride" title="Selenium hexafluoride">SeF<sub>6</sub></a></li> <li><a href="/wiki/Selenium_trioxide" title="Selenium trioxide">SeO<sub>3</sub></a></li> <li><a href="/wiki/Selenoyl_fluoride" title="Selenoyl fluoride">SeO<sub>2</sub>F<sub>2</sub></a></li> <li><a href="/wiki/Selenic_acid" title="Selenic acid">H<sub>2</sub>SeO<sub>4</sub></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Se(IV,VI)</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><span class="chemf nowrap"><a href="/wiki/Selenate_selenite" title="Selenate selenite">SeO<span class="template-chem2-su"><span>2−</span><span>4</span></span> + SeO<span class="template-chem2-su"><span>2−</span><span>3</span></span></a></span></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a 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