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</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="Sommaire" 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="Basculer la table des matières" > <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">Basculer la table des matières</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">Cycloalcane</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="Aller à un article dans une autre langue. Disponible en 51 langues." > <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-51" 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">51 langues</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/Sikloalkaan" title="Sikloalkaan – afrikaans" lang="af" hreflang="af" data-title="Sikloalkaan" data-language-autonym="Afrikaans" data-language-local-name="afrikaans" 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%A3%D9%84%D9%83%D8%A7%D9%86_%D8%AD%D9%84%D9%82%D9%8A" title="ألكان حلقي – arabe" lang="ar" hreflang="ar" data-title="ألكان حلقي" data-language-autonym="العربية" data-language-local-name="arabe" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Sikloalkanlar" title="Sikloalkanlar – azerbaïdjanais" lang="az" hreflang="az" data-title="Sikloalkanlar" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaïdjanais" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%A6%D1%8B%D0%BA%D0%BB%D1%8F%D0%B0%D0%BB%D1%8C%D0%BA%D0%B0%D0%BD%D1%8B" title="Цыкляальканы – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Цыкляальканы" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target"><span>Беларуская (тарашкевіца)</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%A6%D0%B8%D0%BA%D0%BB%D0%BE%D0%B0%D0%BB%D0%BA%D0%B0%D0%BD" title="Циклоалкан – bulgare" lang="bg" hreflang="bg" data-title="Циклоалкан" data-language-autonym="Български" data-language-local-name="bulgare" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Cikloalkani" title="Cikloalkani – bosniaque" lang="bs" hreflang="bs" data-title="Cikloalkani" data-language-autonym="Bosanski" data-language-local-name="bosniaque" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Cicloalc%C3%A0" title="Cicloalcà – catalan" lang="ca" hreflang="ca" data-title="Cicloalcà" data-language-autonym="Català" data-language-local-name="catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D8%A6%DB%95%D9%84%DA%A9%D8%A7%D9%86%DB%8C_%D8%A6%DB%95%DA%B5%D9%82%DB%95%DB%8C%DB%8C" title="ئەلکانی ئەڵقەیی – sorani" lang="ckb" hreflang="ckb" data-title="ئەلکانی ئەڵقەیی" data-language-autonym="کوردی" data-language-local-name="sorani" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Cykloalkany" title="Cykloalkany – tchèque" lang="cs" hreflang="cs" data-title="Cykloalkany" data-language-autonym="Čeština" data-language-local-name="tchèque" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Cycloalkane" title="Cycloalkane – allemand" lang="de" hreflang="de" data-title="Cycloalkane" data-language-autonym="Deutsch" data-language-local-name="allemand" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%9A%CF%85%CE%BA%CE%BB%CE%BF%CE%B1%CE%BB%CE%BA%CE%AC%CE%BD%CE%B9%CE%B1" title="Κυκλοαλκάνια – grec" lang="el" hreflang="el" data-title="Κυκλοαλκάνια" data-language-autonym="Ελληνικά" data-language-local-name="grec" 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/Cycloalkane" title="Cycloalkane – anglais" lang="en" hreflang="en" data-title="Cycloalkane" data-language-autonym="English" data-language-local-name="anglais" 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/Cicloalcano" title="Cicloalcano – espagnol" lang="es" hreflang="es" data-title="Cicloalcano" data-language-autonym="Español" data-language-local-name="espagnol" 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/Ts%C3%BCkloalkaanid" title="Tsükloalkaanid – estonien" lang="et" hreflang="et" data-title="Tsükloalkaanid" data-language-autonym="Eesti" data-language-local-name="estonien" 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/Zikloalkano" title="Zikloalkano – basque" lang="eu" hreflang="eu" data-title="Zikloalkano" data-language-autonym="Euskara" data-language-local-name="basque" 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/%D8%B3%DB%8C%DA%A9%D9%84%D9%88%D8%A2%D9%84%DA%A9%D8%A7%D9%86" title="سیکلوآلکان – persan" lang="fa" hreflang="fa" data-title="سیکلوآلکان" data-language-autonym="فارسی" data-language-local-name="persan" 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/Sykloalkaanit" title="Sykloalkaanit – finnois" lang="fi" hreflang="fi" data-title="Sykloalkaanit" data-language-autonym="Suomi" data-language-local-name="finnois" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A6%D7%99%D7%A7%D7%9C%D7%95%D7%90%D7%9C%D7%A7%D7%90%D7%9F" title="ציקלואלקאן – hébreu" lang="he" hreflang="he" data-title="ציקלואלקאן" data-language-autonym="עברית" data-language-local-name="hébreu" 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%B8%E0%A4%BE%E0%A4%87%E0%A4%95%E0%A5%8D%E0%A4%B2%E0%A5%8B%E0%A4%85%E0%A4%B2%E0%A5%8D%E0%A4%95%E0%A5%87%E0%A4%A8" title="साइक्लोअल्केन – hindi" lang="hi" hreflang="hi" data-title="साइक्लोअल्केन" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Cikloalkani" title="Cikloalkani – croate" lang="hr" hreflang="hr" data-title="Cikloalkani" data-language-autonym="Hrvatski" data-language-local-name="croate" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Cikloalk%C3%A1nok" title="Cikloalkánok – hongrois" lang="hu" hreflang="hu" data-title="Cikloalkánok" data-language-autonym="Magyar" data-language-local-name="hongrois" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%91%D5%AB%D5%AF%D5%AC%D5%B8%D5%BA%D5%A1%D6%80%D5%A1%D6%86%D5%AB%D5%B6%D5%B6%D5%A5%D6%80" title="Ցիկլոպարաֆիններ – arménien" lang="hy" hreflang="hy" data-title="Ցիկլոպարաֆիններ" data-language-autonym="Հայերեն" data-language-local-name="arménien" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Sikloalkana" title="Sikloalkana – indonésien" lang="id" hreflang="id" data-title="Sikloalkana" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonésien" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Cicloalcani" title="Cicloalcani – italien" lang="it" hreflang="it" data-title="Cicloalcani" data-language-autonym="Italiano" data-language-local-name="italien" 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%B7%E3%82%AF%E3%83%AD%E3%82%A2%E3%83%AB%E3%82%AB%E3%83%B3" title="シクロアルカン – japonais" lang="ja" hreflang="ja" data-title="シクロアルカン" data-language-autonym="日本語" data-language-local-name="japonais" 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%AA%E1%83%98%E1%83%99%E1%83%9A%E1%83%9D%E1%83%90%E1%83%9A%E1%83%99%E1%83%90%E1%83%9C%E1%83%98" title="ციკლოალკანი – géorgien" lang="ka" hreflang="ka" data-title="ციკლოალკანი" data-language-autonym="ქართული" data-language-local-name="géorgien" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%A6%D0%B8%D0%BA%D0%BB%D0%BE%D0%B0%D0%BB%D0%BA%D0%B0%D0%BD%D0%B4%D0%B0%D1%80" title="Циклоалкандар – kazakh" lang="kk" hreflang="kk" data-title="Циклоалкандар" data-language-autonym="Қазақша" data-language-local-name="kazakh" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%82%AC%EC%9D%B4%ED%81%B4%EB%A1%9C%EC%95%8C%EC%BC%80%EC%9D%B8" title="사이클로알케인 – coréen" lang="ko" hreflang="ko" data-title="사이클로알케인" data-language-autonym="한국어" data-language-local-name="coréen" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Cikloalkanai" title="Cikloalkanai – lituanien" lang="lt" hreflang="lt" data-title="Cikloalkanai" data-language-autonym="Lietuvių" data-language-local-name="lituanien" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%A6%D0%B8%D0%BA%D0%BB%D0%BE%D0%B0%D0%BB%D0%BA%D0%B0%D0%BD" title="Циклоалкан – macédonien" lang="mk" hreflang="mk" data-title="Циклоалкан" data-language-autonym="Македонски" data-language-local-name="macédonien" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%A6%D0%B8%D0%BA%D0%BB%D0%BE%D0%B0%D0%BB%D0%BA%D0%B0%D0%BD" title="Циклоалкан – mongol" lang="mn" hreflang="mn" data-title="Циклоалкан" data-language-autonym="Монгол" data-language-local-name="mongol" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Cycloalkaan" title="Cycloalkaan – néerlandais" lang="nl" hreflang="nl" data-title="Cycloalkaan" data-language-autonym="Nederlands" data-language-local-name="néerlandais" 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/Sykloalkan" title="Sykloalkan – norvégien bokmål" lang="nb" hreflang="nb" data-title="Sykloalkan" data-language-autonym="Norsk bokmål" data-language-local-name="norvégien 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/Cykloalkany" title="Cykloalkany – polonais" lang="pl" hreflang="pl" data-title="Cykloalkany" data-language-autonym="Polski" data-language-local-name="polonais" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Cicloalcano" title="Cicloalcano – portugais" lang="pt" hreflang="pt" data-title="Cicloalcano" data-language-autonym="Português" data-language-local-name="portugais" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Cicloalcan" title="Cicloalcan – roumain" lang="ro" hreflang="ro" data-title="Cicloalcan" data-language-autonym="Română" data-language-local-name="roumain" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A6%D0%B8%D0%BA%D0%BB%D0%BE%D0%B0%D0%BB%D0%BA%D0%B0%D0%BD%D1%8B" title="Циклоалканы – russe" lang="ru" hreflang="ru" data-title="Циклоалканы" data-language-autonym="Русский" data-language-local-name="russe" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Cikloalkani" title="Cikloalkani – serbo-croate" lang="sh" hreflang="sh" data-title="Cikloalkani" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbo-croate" 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/Cycloalkane" title="Cycloalkane – Simple English" lang="en-simple" hreflang="en-simple" data-title="Cycloalkane" 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/Cykloalk%C3%A1n" title="Cykloalkán – slovaque" lang="sk" hreflang="sk" data-title="Cykloalkán" data-language-autonym="Slovenčina" data-language-local-name="slovaque" 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/Cikloalkan" title="Cikloalkan – slovène" lang="sl" hreflang="sl" data-title="Cikloalkan" data-language-autonym="Slovenščina" data-language-local-name="slovène" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Cikloalkan" title="Cikloalkan – albanais" lang="sq" hreflang="sq" data-title="Cikloalkan" data-language-autonym="Shqip" data-language-local-name="albanais" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A6%D0%B8%D0%BA%D0%BB%D0%BE%D0%B0%D0%BB%D0%BA%D0%B0%D0%BD" title="Циклоалкан – serbe" lang="sr" hreflang="sr" data-title="Циклоалкан" data-language-autonym="Српски / srpski" data-language-local-name="serbe" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Cykloalkan" title="Cykloalkan – suédois" lang="sv" hreflang="sv" data-title="Cykloalkan" data-language-autonym="Svenska" data-language-local-name="suédois" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Sikloalkan" title="Sikloalkan – turc" lang="tr" hreflang="tr" data-title="Sikloalkan" data-language-autonym="Türkçe" data-language-local-name="turc" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/Tsikloparafinnar" title="Tsikloparafinnar – tatar" lang="tt" hreflang="tt" data-title="Tsikloparafinnar" data-language-autonym="Татарча / tatarça" data-language-local-name="tatar" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A6%D0%B8%D0%BA%D0%BB%D0%BE%D0%B0%D0%BB%D0%BA%D0%B0%D0%BD%D0%B8" title="Циклоалкани – ukrainien" lang="uk" hreflang="uk" data-title="Циклоалкани" data-language-autonym="Українська" data-language-local-name="ukrainien" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Naftenlar" title="Naftenlar – ouzbek" lang="uz" hreflang="uz" data-title="Naftenlar" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="ouzbek" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Cycloalkan" title="Cycloalkan – vietnamien" lang="vi" hreflang="vi" data-title="Cycloalkan" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamien" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E7%8E%AF%E7%83%B7%E7%83%83" title="环烷烃 – chinois" lang="zh" hreflang="zh" data-title="环烷烃" data-language-autonym="中文" data-language-local-name="chinois" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E7%92%B0%E7%83%B7%E7%83%B4" title="環烷烴 – cantonais" lang="yue" hreflang="yue" data-title="環烷烴" data-language-autonym="粵語" data-language-local-name="cantonais" class="interlanguage-link-target"><span>粵語</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q188862#sitelinks-wikipedia" title="Modifier les liens interlangues" class="wbc-editpage">Modifier les liens</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div 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class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Outils de la page"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Apparence"> <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">Apparence</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">déplacer vers la barre latérale</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">masquer</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">Un article de Wikipédia, l'encyclopédie libre.</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="fr" dir="ltr"><p>En <a href="/wiki/Chimie_organique" title="Chimie organique">chimie organique</a>, les <b>cycloalcanes</b> (ou <b>cyclanes</b>) sont une série de <a href="/wiki/Mol%C3%A9cule" title="Molécule">molécules</a> contenant deux <a href="/wiki/Atome" title="Atome">atomes</a> d'<a href="/wiki/Hydrog%C3%A8ne" title="Hydrogène">hydrogène</a> par <a href="/wiki/Carbone" title="Carbone">carbone</a> et arrangées en forme d'anneau. Ils font partie des composés <a href="/wiki/Alicyclique" class="mw-redirect" title="Alicyclique">alicycliques</a>. </p><p>La formule générale de ce type de composé est : C<sub>n</sub>H<sub>2n</sub>. </p><p>Les trois principaux éléments de la série : </p><p><span class="mw-default-size" typeof="mw:File"><a href="/wiki/Fichier:Cycloalcanes.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d9/Cycloalcanes.svg/337px-Cycloalcanes.svg.png" decoding="async" width="337" height="103" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d9/Cycloalcanes.svg/506px-Cycloalcanes.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d9/Cycloalcanes.svg/674px-Cycloalcanes.svg.png 2x" data-file-width="337" data-file-height="103" /></a></span> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Nomenclature">Nomenclature</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Cycloalcane&veaction=edit&section=1" title="Modifier la section : Nomenclature" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Cycloalcane&action=edit&section=1" title="Modifier le code source de la section : Nomenclature"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fichier:Cicloalcanos.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/50/Cicloalcanos.png/220px-Cicloalcanos.png" decoding="async" width="220" height="53" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/50/Cicloalcanos.png/330px-Cicloalcanos.png 1.5x, //upload.wikimedia.org/wikipedia/commons/5/50/Cicloalcanos.png 2x" data-file-width="359" data-file-height="87" /></a><figcaption>Nomenclature des Cycloalcanes.</figcaption></figure> <p>La méthode de nommage de l'<a href="/wiki/Union_internationale_de_chimie_pure_et_appliqu%C3%A9e" title="Union internationale de chimie pure et appliquée">UICPA</a> pour ce type de composé est très simple. </p><p>Lorsque l'alcane cyclique constitue la chaîne principale, il suffit de prendre le nom de l'<a href="/wiki/Alcane" title="Alcane">alcane</a> correspondant et de le faire précéder de <b>cyclo</b> . Les ramifications seront ensuite ajoutées devant comme pour les alcanes non cycliques. Exemple : 1-éthylcyclopentane </p><p>Quand l'alcane cyclique ne constitue pas la chaîne principale, il faudra le traiter de ramification. Il devra ainsi figurer devant la chaîne principale avec le préfixe cyclo- et le suffixe -yl lors de la nomenclature de la molécule. Exemple : 2-cyclopentylheptane </p> <div class="mw-heading mw-heading2"><h2 id="Propriétés_physiques_et_structurelles"><span id="Propri.C3.A9t.C3.A9s_physiques_et_structurelles"></span>Propriétés physiques et structurelles</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Cycloalcane&veaction=edit&section=2" title="Modifier la section : Propriétés physiques et structurelles" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Cycloalcane&action=edit&section=2" title="Modifier le code source de la section : Propriétés physiques et structurelles"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Les cycloalcanes (ou cyclanes) sont des <a href="/wiki/Hydrocarbure" title="Hydrocarbure">hydrocarbures</a> comportant un ou plusieurs cycles d'atomes de carbone unis par des <a href="/wiki/Liaison_chimique" title="Liaison chimique">liaisons</a> simples. Les cycloalcanes simples, non substitués, de formule générale (CH<sub>2</sub>)<sub>n</sub> constituent une <a href="/wiki/S%C3%A9rie_homologue" title="Série homologue">série homologue</a> particulièrement intéressante, car leurs synthèses et leurs propriétés chimiques varient directement avec la taille du cycle, différant nettement en cela des <a href="/wiki/Alcane" title="Alcane">alcanes</a> correspondants CH<sub>3</sub> - (CH<sub>2</sub>)<sub>n-2</sub> - CH<sub>3</sub>. La <a href="/wiki/Tension_de_cycle" title="Tension de cycle">tension de cycle</a> due à l'angle entre liaisons entre atomes de carbone et l'encombrement stérique expliquent en grande partie les différences de comportement entre cyclanes et alcanes. </p><p>Quel est l'angle formé entre les liaisons entre atomes de carbone constituant un cycle à n atomes ? L'angle formé doit être au moins égal à l'angle au sommet du <a href="/wiki/Polygone" title="Polygone">polygone</a> régulier de n côtés. </p> <ul><li>Pour n = 3, cet angle est de <span title="1,047 197 rad" style="cursor:help">60</span><abbr class="abbr" title="degré">°</abbr>, soit très inférieur à l'angle normal (<span title="1,902 409 rad" style="cursor:help">109</span><abbr class="abbr" title="degré">°</abbr>28´) de deux liaisons du carbone ; il en résulte une tension du cycle qui explique sa grande instabilité.</li> <li>Pour n = 4, si les atomes de carbone sont coplanaires, cet angle est de <span title="1,570 796 rad" style="cursor:help">90</span><abbr class="abbr" title="degré">°</abbr> ; la tension est encore notable ; elle peut même augmenter très légèrement si le cycle subit un gauchissement.</li> <li>Pour n = 5, l'angle est de <span title="1,884 955 rad" style="cursor:help">108</span><abbr class="abbr" title="degré">°</abbr> ce qui entraîne, dans le cycle plan, une tension négligeable.</li> <li>Pour n > 5, si le cycle était plan et convexe, on serait tenté d'envisager une tension de sens inverse de celle constatée pour les petits cycles (pour n = 6, <span title="2,094 395 rad" style="cursor:help">120</span><abbr class="abbr" title="degré">°</abbr> au lieu de <span title="1,902 409 rad" style="cursor:help">109</span><abbr class="abbr" title="degré">°</abbr> 28´, et pour n très grand, <span title="3,141 592 rad" style="cursor:help">180</span><abbr class="abbr" title="degré">°</abbr> au lieu de <span title="1,902 409 rad" style="cursor:help">109</span><abbr class="abbr" title="degré">°</abbr> 28´).</li></ul> <p>Or, on constate que pour n > 5 tous les cycles présentent une grande stabilité ; on en conclut que pour n > 5 les cycles ne sont plus plans. </p> <ul><li>En effet, pour n = 6, comme dans le <a href="/wiki/Cyclohexane" title="Cyclohexane">cyclohexane</a>, on peut prévoir deux <a href="/wiki/Conformation" class="mw-redirect" title="Conformation">conformations</a> sans tension. La première, la plus stable, est généralement désignée sous l'expression de 'forme chaise'; elle n'est pas déformable sans augmentation transitoire des tensions. La seconde, en général moins stable, est appelée 'forme bateau', peut subir des déformations limitées.</li></ul> <div class="mw-heading mw-heading2"><h2 id="Réactions"><span id="R.C3.A9actions"></span>Réactions</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Cycloalcane&veaction=edit&section=3" title="Modifier la section : Réactions" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Cycloalcane&action=edit&section=3" title="Modifier le code source de la section : Réactions"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>La <a href="/wiki/Cyclisation" title="Cyclisation">cyclisation</a> est une réaction chimique permettant d'obtenir un cycloalcane à partir d'un alcane. </p><p>Mêmes types de réactions que les alcanes. </p><p>Notons cependant que l'existence de tensions de cycle (cycle à 3 ou 4 carbones) dans les réactifs ou symétriquement des cycles non tendus dans les produits (cycles à 5 ou mieux à 6 carbones) peut accélérer une réaction. </p> <div class="mw-heading mw-heading2"><h2 id="Articles_connexes">Articles connexes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Cycloalcane&veaction=edit&section=4" title="Modifier la section : Articles connexes" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Cycloalcane&action=edit&section=4" title="Modifier le code source de la section : Articles connexes"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Alcane" title="Alcane">Alcane</a></li> <li><a href="/wiki/Cycloalc%C3%A8ne" title="Cycloalcène">Cycloalcène</a></li> <li><a href="/wiki/Cycloalcyne" title="Cycloalcyne">Cycloalcyne</a></li></ul> <table class="navbox collapsible noprint autocollapse" style=""> <tbody><tr><th class="navbox-title" colspan="2" style=""><div style="float:left; width:6em; text-align:left"><div class="noprint plainlinks nowrap tnavbar" style="padding:0; font-size:xx-small; color:var(--color-emphasized, #000000);"><a href="/wiki/Mod%C3%A8le:Palette_Cycloalcanes" title="Modèle:Palette Cycloalcanes"><abbr class="abbr" title="Voir ce modèle.">v</abbr></a> · <a class="external text" href="https://fr.wikipedia.org/w/index.php?title=Mod%C3%A8le:Palette_Cycloalcanes&action=edit"><abbr class="abbr" title="Modifier ce modèle. Merci de prévisualiser avant de sauvegarder.">m</abbr></a></div></div><div style="font-size:110%"><a class="mw-selflink selflink">Cycloalcanes</a></div></th> </tr> <tr> <td class="navbox-list" style="text-align:center;;" colspan="2"><div class="liste-horizontale"> <ul><li><a href="/wiki/Cyclopropane" title="Cyclopropane">Cyclopropane</a> (C<sub>3</sub>H<sub>6</sub>)</li> <li><a href="/wiki/Cyclobutane" title="Cyclobutane">Cyclobutane</a> (C<sub>4</sub>H<sub>8</sub>)</li> <li><a href="/wiki/Cyclopentane" title="Cyclopentane">Cyclopentane</a> (C<sub>5</sub>H<sub>10</sub>)</li> <li><a href="/wiki/Cyclohexane" title="Cyclohexane">Cyclohexane</a> (C<sub>6</sub>H<sub>12</sub>)</li> <li><a href="/wiki/Cycloheptane" title="Cycloheptane">Cycloheptane</a> (C<sub>7</sub>H<sub>14</sub>)</li> <li><a href="/wiki/Cyclooctane" title="Cyclooctane">Cyclooctane</a> (C<sub>8</sub>H<sub>16</sub>)</li> <li><a href="/wiki/Cyclononane" title="Cyclononane">Cyclononane</a> (C<sub>9</sub>H<sub>18</sub>)</li> <li><a href="/wiki/Cyclod%C3%A9cane" title="Cyclodécane">Cyclodécane</a> (C<sub>10</sub>H<sub>20</sub>)</li> <li><a href="/wiki/Cyclound%C3%A9cane" title="Cycloundécane">Cycloundécane</a> (C<sub>11</sub>H<sub>22</sub>)</li> <li><a href="/w/index.php?title=Cyclodod%C3%A9cane&action=edit&redlink=1" class="new" title="Cyclododécane (page inexistante)">Cyclododécane</a> (C<sub>12</sub>H<sub>24</sub>)</li> <li><a href="/w/index.php?title=Cyclotrid%C3%A9cane&action=edit&redlink=1" class="new" title="Cyclotridécane (page inexistante)">Cyclotridécane</a> (C<sub>13</sub>H<sub>26</sub>)</li> <li><a href="/w/index.php?title=Cyclot%C3%A9trad%C3%A9cane&action=edit&redlink=1" class="new" title="Cyclotétradécane (page inexistante)">Cyclotétradécane</a> (C<sub>14</sub>H<sub>28</sub>)</li> <li><a href="/w/index.php?title=Cyclopentad%C3%A9cane&action=edit&redlink=1" class="new" title="Cyclopentadécane (page inexistante)">Cyclopentadécane</a> (C<sub>15</sub>H<sub>30</sub>)</li> <li><a href="/w/index.php?title=Cyclohexad%C3%A9cane&action=edit&redlink=1" class="new" title="Cyclohexadécane (page inexistante)">Cyclohexadécane</a> (C<sub>16</sub>H<sub>32</sub>)</li> <li><a href="/w/index.php?title=Cycloheptad%C3%A9cane&action=edit&redlink=1" class="new" title="Cycloheptadécane (page inexistante)">Cycloheptadécane</a> (C<sub>17</sub>H<sub>34</sub>)</li> <li><a href="/w/index.php?title=Cyclooctad%C3%A9cane&action=edit&redlink=1" class="new" title="Cyclooctadécane (page inexistante)">Cyclooctadécane</a> (C<sub>18</sub>H<sub>36</sub>)</li> <li><a href="/w/index.php?title=Cyclononad%C3%A9cane&action=edit&redlink=1" class="new" title="Cyclononadécane (page inexistante)">Cyclononadécane</a> (C<sub>19</sub>H<sub>38</sub>)</li> <li><a href="/w/index.php?title=Cycloeicosane&action=edit&redlink=1" class="new" title="Cycloeicosane (page inexistante)">Cycloeicosane</a> (C<sub>20</sub>H<sub>40</sub>)</li></ul> </div></td> </tr> <tr> <td class="navbox-banner" style="" colspan="2"><div class="liste-horizontale"> <ul><li><a href="/wiki/Mod%C3%A8le:Palette_Alcanes" title="Modèle:Palette Alcanes">Palette Alcanes</a></li> <li><a href="/wiki/Nomenclature_des_alcanes" title="Nomenclature des alcanes">Nomenclature des alcanes</a></li></ul> </div></td></tr></tbody></table> <ul id="bandeau-portail" class="bandeau-portail"><li><span class="bandeau-portail-element"><span class="bandeau-portail-icone"><span class="noviewer" typeof="mw:File"><a href="/wiki/Portail:Chimie" title="Portail de la chimie"><img alt="icône décorative" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/59/Nuvola_apps_edu_science.svg/24px-Nuvola_apps_edu_science.svg.png" decoding="async" width="24" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/59/Nuvola_apps_edu_science.svg/36px-Nuvola_apps_edu_science.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/59/Nuvola_apps_edu_science.svg/48px-Nuvola_apps_edu_science.svg.png 2x" data-file-width="128" data-file-height="128" /></a></span></span> <span class="bandeau-portail-texte"><a href="/wiki/Portail:Chimie" title="Portail:Chimie">Portail de la chimie</a></span> </span></li> </ul>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1&useformat=desktop" alt="" width="1" height="1" style="border: none; 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