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id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Início</div> </a> </li> <li id="toc-Usos_dos_compostos_quelantes" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Usos_dos_compostos_quelantes"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Usos dos compostos quelantes</span> </div> </a> <ul id="toc-Usos_dos_compostos_quelantes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Referências" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Referências"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Referências</span> </div> </a> <ul id="toc-Referências-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Conteúdo" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Alternar o índice" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Alternar o índice</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Efeito quelato</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Ir para um artigo noutra língua. Disponível em 34 línguas" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-34" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">34 línguas</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Chelasie" title="Chelasie — africanês" lang="af" hreflang="af" data-title="Chelasie" data-language-autonym="Afrikaans" data-language-local-name="africanês" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A7%D8%B3%D8%AA%D8%AE%D9%84%D8%A7%D8%A8" title="استخلاب — árabe" lang="ar" hreflang="ar" data-title="استخلاب" data-language-autonym="العربية" data-language-local-name="árabe" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Helacija" title="Helacija — bósnio" lang="bs" hreflang="bs" data-title="Helacija" data-language-autonym="Bosanski" data-language-local-name="bósnio" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Chelatace" title="Chelatace — checo" lang="cs" hreflang="cs" data-title="Chelatace" data-language-autonym="Čeština" data-language-local-name="checo" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A7%CE%B7%CE%BB%CE%B9%CE%BA%CE%BF%CF%80%CE%BF%CE%AF%CE%B7%CF%83%CE%B7" title="Χηλικοποίηση — grego" lang="el" hreflang="el" data-title="Χηλικοποίηση" data-language-autonym="Ελληνικά" data-language-local-name="grego" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Chelation" title="Chelation — inglês" lang="en" hreflang="en" data-title="Chelation" data-language-autonym="English" data-language-local-name="inglês" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Agente_quelante" title="Agente quelante — espanhol" lang="es" hreflang="es" data-title="Agente quelante" data-language-autonym="Español" data-language-local-name="espanhol" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Kelaatumine" title="Kelaatumine — estónio" lang="et" hreflang="et" data-title="Kelaatumine" data-language-autonym="Eesti" data-language-local-name="estónio" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Kelato" title="Kelato — basco" lang="eu" hreflang="eu" data-title="Kelato" data-language-autonym="Euskara" data-language-local-name="basco" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%DA%86%D9%86%DA%AF%D8%A7%D9%84%D8%B4" title="چنگالش — persa" lang="fa" hreflang="fa" data-title="چنگالش" data-language-autonym="فارسی" data-language-local-name="persa" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Kelaatio" title="Kelaatio — finlandês" lang="fi" hreflang="fi" data-title="Kelaatio" data-language-autonym="Suomi" data-language-local-name="finlandês" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Ch%C3%A9lation" title="Chélation — francês" lang="fr" hreflang="fr" data-title="Chélation" data-language-autonym="Français" data-language-local-name="francês" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gu mw-list-item"><a href="https://gu.wikipedia.org/wiki/%E0%AA%9A%E0%AB%87%E0%AA%B2%E0%AB%87%E0%AA%B6%E0%AA%A8" title="ચેલેશન — guzerate" lang="gu" hreflang="gu" data-title="ચેલેશન" data-language-autonym="ગુજરાતી" data-language-local-name="guzerate" class="interlanguage-link-target"><span>ગુજરાતી</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%9B%D7%9C%D7%A6%D7%99%D7%94" title="כלציה — hebraico" lang="he" hreflang="he" data-title="כלציה" data-language-autonym="עברית" data-language-local-name="hebraico" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%95%E0%A5%87%E0%A4%B2%E0%A5%87%E0%A4%B6%E0%A4%A8" title="केलेशन — hindi" lang="hi" hreflang="hi" data-title="केलेशन" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Kel%C3%A1that%C3%A1s" title="Keláthatás — húngaro" lang="hu" hreflang="hu" data-title="Keláthatás" data-language-autonym="Magyar" data-language-local-name="húngaro" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Pengelatan" title="Pengelatan — indonésio" lang="id" hreflang="id" data-title="Pengelatan" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonésio" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Kel-ionuro" title="Kel-ionuro — ido" lang="io" hreflang="io" data-title="Kel-ionuro" data-language-autonym="Ido" data-language-local-name="ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Chelazione" title="Chelazione — italiano" lang="it" hreflang="it" data-title="Chelazione" data-language-autonym="Italiano" data-language-local-name="italiano" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%AD%E3%83%AC%E3%83%BC%E3%83%88" title="キレート — japonês" lang="ja" hreflang="ja" data-title="キレート" data-language-autonym="日本語" data-language-local-name="japonês" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%B0%E1%83%94%E1%83%9A%E1%83%90%E1%83%A2%E1%83%94%E1%83%91%E1%83%98" title="ჰელატები — georgiano" lang="ka" hreflang="ka" data-title="ჰელატები" data-language-autonym="ქართული" data-language-local-name="georgiano" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%ED%82%AC%EB%A0%88%EC%9D%B4%ED%8A%B8" title="킬레이트 — coreano" lang="ko" hreflang="ko" data-title="킬레이트" data-language-autonym="한국어" data-language-local-name="coreano" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Chelatie" title="Chelatie — neerlandês" lang="nl" hreflang="nl" data-title="Chelatie" data-language-autonym="Nederlands" data-language-local-name="neerlandês" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Kompleksdanninger" title="Kompleksdanninger — norueguês bokmål" lang="nb" hreflang="nb" data-title="Kompleksdanninger" data-language-autonym="Norsk bokmål" data-language-local-name="norueguês bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Chelatacja" title="Chelatacja — polaco" lang="pl" hreflang="pl" data-title="Chelatacja" data-language-autonym="Polski" data-language-local-name="polaco" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Chelare" title="Chelare — romeno" lang="ro" hreflang="ro" data-title="Chelare" data-language-autonym="Română" data-language-local-name="romeno" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Helacija" title="Helacija — servo-croata" lang="sh" hreflang="sh" data-title="Helacija" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="servo-croata" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Chelation" title="Chelation — Simple English" lang="en-simple" hreflang="en-simple" data-title="Chelation" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Chel%C3%A1cia" title="Chelácia — eslovaco" lang="sk" hreflang="sk" data-title="Chelácia" data-language-autonym="Slovenčina" data-language-local-name="eslovaco" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Kelacija" title="Kelacija — esloveno" lang="sl" hreflang="sl" data-title="Kelacija" data-language-autonym="Slovenščina" data-language-local-name="esloveno" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/Helacija" title="Helacija — sérvio" lang="sr" hreflang="sr" data-title="Helacija" data-language-autonym="Српски / srpski" data-language-local-name="sérvio" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%84%E0%B8%B5%E0%B9%80%E0%B8%A5%E0%B8%8A%E0%B8%B1%E0%B8%99" title="คีเลชัน — tailandês" lang="th" hreflang="th" data-title="คีเลชัน" data-language-autonym="ไทย" data-language-local-name="tailandês" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/%C5%9Eelatlama" title="Şelatlama — turco" lang="tr" hreflang="tr" data-title="Şelatlama" data-language-autonym="Türkçe" data-language-local-name="turco" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E8%9E%AF%E5%90%88%E7%89%A9" title="螯合物 — chinês" lang="zh" hreflang="zh" data-title="螯合物" data-language-autonym="中文" data-language-local-name="chinês" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div 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.tmbox-speedy{background-color:#310402}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .tmbox{background-color:#2e2505}html.skin-theme-clientpref-os .mw-parser-output .tmbox-speedy{background-color:#310402}}body.skin--responsive .mw-parser-output table.tmbox img{max-width:none!important}</style><table class="box-Sem_notas plainlinks metadata ambox ambox-content ambox-content" role="presentation"><tbody><tr><td class="mbox-image"><div style="width:52px"><span typeof="mw:File"><a href="/wiki/Wikip%C3%A9dia:Livro_de_estilo/Cite_as_fontes" title="Wikipédia:Livro de estilo/Cite as fontes"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Text_document_with_red_question_mark.svg/40px-Text_document_with_red_question_mark.svg.png" decoding="async" width="40" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Text_document_with_red_question_mark.svg/60px-Text_document_with_red_question_mark.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Text_document_with_red_question_mark.svg/80px-Text_document_with_red_question_mark.svg.png 2x" data-file-width="48" data-file-height="48" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">Este artigo ou secção contém <a href="/wiki/Wikip%C3%A9dia:Livro_de_estilo/Cite_as_fontes#Referências_no_fim" title="Wikipédia:Livro de estilo/Cite as fontes">uma lista de referências no fim do texto</a>, mas as suas fontes não são claras porque <b>não são <a href="/wiki/Wikip%C3%A9dia:Livro_de_estilo/Cite_as_fontes#Referências_no_texto" title="Wikipédia:Livro de estilo/Cite as fontes">citadas no corpo do artigo</a></b>, o que <b>compromete a <a href="/wiki/Wikip%C3%A9dia:V" class="mw-redirect" title="Wikipédia:V">confiabilidade</a></b> das informações.<span class="hide-when-compact"> Ajude a <span class="plainlinks"><a class="external text" href="https://pt.wikipedia.org/w/index.php?title=Efeito_quelato&action=edit">melhorar</a></span> este artigo <a href="/wiki/Wikip%C3%A9dia:Livro_de_estilo/Refer%C3%AAncias_e_notas_de_rodap%C3%A9" title="Wikipédia:Livro de estilo/Referências e notas de rodapé">inserindo citações no corpo do artigo</a>.</span> <small class="date-container"><i>(<span class="date">Maio de 2023</span>)</i></small></div></td></tr></tbody></table> <p><br /> Os compostos complexos, ou <a href="/wiki/Composto_de_coordena%C3%A7%C3%A3o" title="Composto de coordenação">compostos de coordenação</a>, podem apresentar diferentes números de ligantes, denominados números de coordenação (NC), teoria proposta pelo químico suíço <a href="/wiki/Alfred_Werner" title="Alfred Werner">Alfred Werner</a> (1866 – 1919). Assim, se tratando da nomenclatura, Werner assume o sufixo <i>dentado</i> ao se tratar das ligações realizadas com o átomo metálico.<br /> </p><p>Dentre os compostos complexos, é possível detectar alguns tipos de coordenação, obtendo, também os valores para o Número de Coordenação entre 1 e 6. São classificados como monodentados (NC = 1), bidentados (NC = 2) e polidentados (NC = 3, 4, 5 ou 6).<br /> </p><p>Existem compostos bidentados ou polidentados que podem apresentar o chamado <b>efeito quelato</b>. O efeito quelato ocorre quando um ligante se coordena por mais de um par de elétrons sigma, sendo este de átomos diferentes, porém, do mesmo ligante, como por exemplo, o íon dietilenodiamina (en). </p> <div class="mw-heading mw-heading2"><h2 id="Usos_dos_compostos_quelantes">Usos dos compostos quelantes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Efeito_quelato&veaction=edit&section=1" title="Editar secção: Usos dos compostos quelantes" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Efeito_quelato&action=edit&section=1" title="Editar código-fonte da secção: Usos dos compostos quelantes"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Além disso, os compostos quelantes, que são aquele que provocam o efeito quelato, são muito usados na área industrial, farmacêutica e biológica. Um exemplo de composto quelante muito utilizado, é o ácido etilenodiamino tetra-acético, conhecido como EDTA (<i>do inglês: Ethylenediamine tetraacetic acid</i>). Este composto é usado na fabricação de descolorantes, desodorantes, pães, entre outros produtos comuns no cotidiano. É também muito utilizado em ramos de pesquisa de microscopia eletrônica, para o contraste de DNA e RNA, e nas sínteses de fármacos, pois possui propriedade de inibir a ação de enzimas bactericidas. </p> <div class="mw-heading mw-heading2"><h2 id="Referências"><span id="Refer.C3.AAncias"></span>Referências</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Efeito_quelato&veaction=edit&section=2" title="Editar secção: Referências" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Efeito_quelato&action=edit&section=2" title="Editar código-fonte da secção: Referências"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>Lee, J. D. <b>Química inorgânica não tão concisa</b>. Tradução da 5ª ed. inglesa. Editora Edgard Blücher Ltda. pp. 24, 217, 360-370. 1999</li> <li>TOMA, H. E.; FERREIRA, A. M. C.; MASSABNI, A. M. G.; MASSABNI, A. C.. <b>Nomenclatura Básica de Química Inorgânica</b>. Edgard Blucher, 2014.</li> <li>SHRIVER, DUWARD; ATKINS, PETER. <b>Química inorgânica</b> - 4ª edição. Porto Alegre, Bookman, 2008.</li></ul>    </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="">Obtida de "<a dir="ltr" href="https://pt.wikipedia.org/w/index.php?title=Efeito_quelato&oldid=66928688">https://pt.wikipedia.org/w/index.php?title=Efeito_quelato&oldid=66928688</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Especial:Categorias" title="Especial:Categorias">Categoria</a>: <ul><li><a href="/wiki/Categoria:Compostos_de_coordena%C3%A7%C3%A3o" title="Categoria:Compostos de coordenação">Compostos de coordenação</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Categorias ocultas: <ul><li><a href="/wiki/Categoria:!Artigos_que_carecem_de_notas_de_rodap%C3%A9_desde_maio_de_2023" title="Categoria:!Artigos que carecem de notas de rodapé desde maio de 2023">!Artigos que carecem de notas de rodapé desde maio de 2023</a></li><li><a href="/wiki/Categoria:!Artigos_que_carecem_de_notas_de_rodap%C3%A9_sem_indica%C3%A7%C3%A3o_de_tema" title="Categoria:!Artigos que carecem de notas de rodapé sem indicação de tema">!Artigos que carecem de notas de rodapé sem indicação de tema</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> Esta página foi editada pela última vez às 23h37min de 7 de novembro de 2023.</li> <li id="footer-info-copyright">Este texto é disponibilizado nos termos da licença <a rel="nofollow" class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.pt">Atribuição-CompartilhaIgual 4.0 Internacional (CC BY-SA 4.0) da Creative Commons</a>; pode estar sujeito a condições adicionais. 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