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[r]" accesskey="r"><span>Siste endringer</span></a></li> </ul> </div> </div> <div id="p-prosjekt" class="vector-menu mw-portlet mw-portlet-prosjekt" > <div class="vector-menu-heading"> Prosjekt </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-Prosjektportal" class="mw-list-item"><a href="/wiki/Wikipedia:Portal"><span>Prosjektportal</span></a></li><li id="n-bidra" class="mw-list-item"><a href="/wiki/Wikipedia:Bidra_til_Wikipedia"><span>Hvordan bidra?</span></a></li><li id="n-tinget" class="mw-list-item"><a href="/wiki/Wikipedia:Tinget"><span>Tinget</span></a></li><li id="n-torget" class="mw-list-item"><a href="/wiki/Wikipedia:Torget"><span>Torget</span></a></li><li id="n-konkurranser" class="mw-list-item"><a href="/wiki/Wikipedia:Konkurranser"><span>Konkurranser</span></a></li> </ul> </div> </div> <div id="p-Wikipedia" class="vector-menu mw-portlet mw-portlet-Wikipedia" > <div class="vector-menu-heading"> Wikipedia </div> <div 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class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_no.wikipedia.org&uselang=nb" class=""><span>Doner</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Spesial:Opprett_konto&returnto=Isomeri" title="Du oppfordres til å opprette en konto og logge inn, men det er ikke obligatorisk" class=""><span>Opprett konto</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Spesial:Logg_inn&returnto=Isomeri" title="Du oppfordres til å logge inn, men det er ikke obligatorisk [o]" accesskey="o" class=""><span>Logg inn</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out user-links-collapsible-item" title="Flere alternativer" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Personlig" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-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-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Personlig</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Brukermeny" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_no.wikipedia.org&uselang=nb"><span>Doner</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Spesial:Opprett_konto&returnto=Isomeri" title="Du oppfordres til å opprette en konto og logge inn, men det er ikke obligatorisk"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Opprett konto</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Spesial:Logg_inn&returnto=Isomeri" title="Du oppfordres til å logge inn, men det er ikke obligatorisk [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Logg inn</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Nettsted"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Innhold" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Innhold</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">flytt til sidefeltet</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">skjul</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li 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">(Til toppen)</div> </a> </li> <li id="toc-Strukturisomeri" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Strukturisomeri"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Strukturisomeri</span> </div> </a> <button aria-controls="toc-Strukturisomeri-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Vis/skjul underseksjonen Strukturisomeri</span> </button> <ul id="toc-Strukturisomeri-sublist" class="vector-toc-list"> <li id="toc-Kjedeisomeri" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Kjedeisomeri"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Kjedeisomeri</span> </div> </a> <ul id="toc-Kjedeisomeri-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Stillingsisomeri" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Stillingsisomeri"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.2</span> <span>Stillingsisomeri</span> </div> </a> <ul id="toc-Stillingsisomeri-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Funksjonsisomeri" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Funksjonsisomeri"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.3</span> <span>Funksjonsisomeri</span> </div> </a> <ul id="toc-Funksjonsisomeri-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Tautomeri" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Tautomeri"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.4</span> <span>Tautomeri</span> </div> </a> <ul id="toc-Tautomeri-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Stereoisomeri" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Stereoisomeri"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Stereoisomeri</span> </div> </a> <button aria-controls="toc-Stereoisomeri-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Vis/skjul underseksjonen Stereoisomeri</span> </button> <ul id="toc-Stereoisomeri-sublist" class="vector-toc-list"> <li id="toc-Optisk_isomeri_eller_rom-isomeri" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Optisk_isomeri_eller_rom-isomeri"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Optisk isomeri eller rom-isomeri</span> </div> </a> <ul id="toc-Optisk_isomeri_eller_rom-isomeri-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Geometrisk_isomeri_eller_cis-trans-isomeri" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Geometrisk_isomeri_eller_cis-trans-isomeri"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>Geometrisk isomeri eller cis-trans-isomeri</span> </div> </a> <ul id="toc-Geometrisk_isomeri_eller_cis-trans-isomeri-sublist" class="vector-toc-list"> </ul> </li> </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="Innhold" 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="Vis/skjul innholdsfortegnelsen" > <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">Vis/skjul innholdsfortegnelsen</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">Isomeri</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="Gå til en artikkel på et annet språk. Tilgjengelig på 29 språk" > <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-29" 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">29 språk</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Isomeri" title="Isomeri – svensk" lang="sv" hreflang="sv" data-title="Isomeri" data-language-autonym="Svenska" data-language-local-name="svensk" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Isomer%C3%ADa" title="Isomería – asturisk" lang="ast" hreflang="ast" data-title="Isomería" data-language-autonym="Asturianu" data-language-local-name="asturisk" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%86%D0%B7%D0%B0%D0%BC%D0%B5%D1%80%D1%8B%D1%8F" title="Ізамерыя – belarusisk" lang="be" hreflang="be" data-title="Ізамерыя" data-language-autonym="Беларуская" data-language-local-name="belarusisk" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%98%D0%B7%D0%BE%D0%BC%D0%B5%D1%80%D0%B8%D1%8F" title="Изомерия – bulgarsk" lang="bg" hreflang="bg" data-title="Изомерия" data-language-autonym="Български" data-language-local-name="bulgarsk" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Izomeriezh" title="Izomeriezh – bretonsk" lang="br" hreflang="br" data-title="Izomeriezh" data-language-autonym="Brezhoneg" data-language-local-name="bretonsk" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Izomerie" title="Izomerie – tsjekkisk" lang="cs" hreflang="cs" data-title="Izomerie" data-language-autonym="Čeština" data-language-local-name="tsjekkisk" 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/Isomerie" title="Isomerie – tysk" lang="de" hreflang="de" data-title="Isomerie" data-language-autonym="Deutsch" data-language-local-name="tysk" 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%99%CF%83%CE%BF%CE%BC%CE%AD%CF%81%CE%B5%CE%B9%CE%B1" title="Ισομέρεια – gresk" lang="el" hreflang="el" data-title="Ισομέρεια" data-language-autonym="Ελληνικά" data-language-local-name="gresk" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en badge-Q70893996 mw-list-item" title=""><a href="https://en.wikipedia.org/wiki/Isomerism" title="Isomerism – engelsk" lang="en" hreflang="en" data-title="Isomerism" data-language-autonym="English" data-language-local-name="engelsk" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Isom%C3%A9rie" title="Isomérie – fransk" lang="fr" hreflang="fr" data-title="Isomérie" data-language-autonym="Français" data-language-local-name="fransk" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Isim%C3%A9ir" title="Isiméir – irsk" lang="ga" hreflang="ga" data-title="Isiméir" data-language-autonym="Gaeilge" data-language-local-name="irsk" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Isomer%C3%ADa" title="Isomería – galisisk" lang="gl" hreflang="gl" data-title="Isomería" data-language-autonym="Galego" data-language-local-name="galisisk" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%BB%D5%A6%D5%B8%D5%B4%D5%A5%D6%80%D5%AB%D5%A1" title="Իզոմերիա – armensk" lang="hy" hreflang="hy" data-title="Իզոմերիա" data-language-autonym="Հայերեն" data-language-local-name="armensk" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%B8%E0%A4%AE%E0%A4%BE%E0%A4%B5%E0%A4%AF%E0%A4%B5%E0%A4%A4%E0%A4%BE" title="समावयवता – hindi" lang="hi" hreflang="hi" data-title="समावयवता" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Isomeria" title="Isomeria – italiensk" lang="it" hreflang="it" data-title="Isomeria" data-language-autonym="Italiano" data-language-local-name="italiensk" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%98%D0%B7%D0%BE%D0%BC%D0%B5%D1%80%D0%B8%D1%8F" title="Изомерия – kasakhisk" lang="kk" hreflang="kk" data-title="Изомерия" data-language-autonym="Қазақша" data-language-local-name="kasakhisk" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Izom%C4%93rija" title="Izomērija – latvisk" lang="lv" hreflang="lv" data-title="Izomērija" data-language-autonym="Latviešu" data-language-local-name="latvisk" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Izom%C3%A9ria" title="Izoméria – ungarsk" lang="hu" hreflang="hu" data-title="Izoméria" data-language-autonym="Magyar" data-language-local-name="ungarsk" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%98%D0%B7%D0%BE%D0%BC%D0%B5%D1%80%D0%B8%D1%98%D0%B0" title="Изомерија – makedonsk" lang="mk" hreflang="mk" data-title="Изомерија" data-language-autonym="Македонски" data-language-local-name="makedonsk" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Isomeria" title="Isomeria – oksitansk" lang="oc" hreflang="oc" data-title="Isomeria" data-language-autonym="Occitan" data-language-local-name="oksitansk" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Izomeriya" title="Izomeriya – usbekisk" lang="uz" hreflang="uz" data-title="Izomeriya" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="usbekisk" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Izomeria" title="Izomeria – polsk" lang="pl" hreflang="pl" data-title="Izomeria" data-language-autonym="Polski" data-language-local-name="polsk" 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/Isomerismo" title="Isomerismo – portugisisk" lang="pt" hreflang="pt" data-title="Isomerismo" data-language-autonym="Português" data-language-local-name="portugisisk" 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/Izomerie" title="Izomerie – rumensk" lang="ro" hreflang="ro" data-title="Izomerie" data-language-autonym="Română" data-language-local-name="rumensk" 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%98%D0%B7%D0%BE%D0%BC%D0%B5%D1%80%D0%B8%D1%8F" title="Изомерия – russisk" lang="ru" hreflang="ru" data-title="Изомерия" data-language-autonym="Русский" data-language-local-name="russisk" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Izom%C3%A9ria" title="Izoméria – slovakisk" lang="sk" hreflang="sk" data-title="Izoméria" data-language-autonym="Slovenčina" data-language-local-name="slovakisk" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Isomeria" title="Isomeria – finsk" lang="fi" hreflang="fi" data-title="Isomeria" data-language-autonym="Suomi" data-language-local-name="finsk" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/%D0%98%D0%B7%D0%BE%D0%BC%D0%B5%D1%80%D0%B8%D1%8F" title="Изомерия – tadsjikisk" lang="tg" hreflang="tg" data-title="Изомерия" data-language-autonym="Тоҷикӣ" data-language-local-name="tadsjikisk" class="interlanguage-link-target"><span>Тоҷикӣ</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%86%D0%B7%D0%BE%D0%BC%D0%B5%D1%80%D1%96%D1%8F" title="Ізомерія – ukrainsk" lang="uk" hreflang="uk" data-title="Ізомерія" data-language-autonym="Українська" data-language-local-name="ukrainsk" class="interlanguage-link-target"><span>Українська</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/Q41088690#sitelinks-wikipedia" title="Rediger lenker til artikkelen på andre språk" class="wbc-editpage">Rediger lenker</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Navnerom"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Isomeri" title="Vis innholdssiden [c]" accesskey="c"><span>Artikkel</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Diskusjon:Isomeri&action=edit&redlink=1" rel="discussion" class="new" title="Diskusjon om innholdssiden (ikke skrevet ennå) [t]" accesskey="t"><span>Diskusjon</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Bytt språkvariant" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">norsk bokmål</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Visninger"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Isomeri"><span>Les</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Isomeri&veaction=edit" title="Rediger siden [v]" accesskey="v"><span>Rediger</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Isomeri&action=edit" title="Rediger kildekoden for denne siden [e]" accesskey="e"><span>Rediger kilde</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Isomeri&action=history" title="Tidligere sideversjoner av denne siden [h]" accesskey="h"><span>Vis historikk</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Sideverktøy"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Verktøy" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Verktøy</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Verktøy</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">flytt til sidefeltet</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">skjul</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Flere alternativer" > <div class="vector-menu-heading"> Handlinger </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Isomeri"><span>Les</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Isomeri&veaction=edit" title="Rediger siden [v]" accesskey="v"><span>Rediger</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Isomeri&action=edit" title="Rediger kildekoden for denne siden [e]" accesskey="e"><span>Rediger kilde</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Isomeri&action=history"><span>Vis historikk</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Generelt </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Spesial:Lenker_hit/Isomeri" title="Liste over alle wikisider som lenker hit [j]" accesskey="j"><span>Lenker hit</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Spesial:Relaterte_endringer/Isomeri" rel="nofollow" title="Siste endringer i sider som blir lenket fra denne siden [k]" accesskey="k"><span>Relaterte endringer</span></a></li><li id="t-upload" class="mw-list-item"><a href="//commons.wikimedia.org/wiki/Special:UploadWizard?uselang=no" title="Last opp filer [u]" accesskey="u"><span>Last opp fil</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Spesial:Spesialsider" title="Liste over alle spesialsider [q]" accesskey="q"><span>Spesialsider</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Isomeri&oldid=22890780" title="Permanent lenke til denne versjonen av siden"><span>Permanent lenke</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Isomeri&action=info" title="Mer informasjon om denne siden"><span>Sideinformasjon</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Spesial:Siteringshjelp&page=Isomeri&id=22890780&wpFormIdentifier=titleform" title="Informasjon om hvordan denne siden kan siteres"><span>Siter denne siden</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Spesial:UrlShortener&url=https%3A%2F%2Fno.wikipedia.org%2Fwiki%2FIsomeri"><span>Hent forkortet URL</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Spesial:QrCode&url=https%3A%2F%2Fno.wikipedia.org%2Fwiki%2FIsomeri"><span>Last ned QR-kode</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Skriv ut / eksporter </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Spesial:DownloadAsPdf&page=Isomeri&action=show-download-screen"><span>Last ned som PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Isomeri&printable=yes" title="Utskriftsvennlig versjon av denne siden [p]" accesskey="p"><span>Utskriftsvennlig versjon</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> På andre prosjekter </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:Isomerism" hreflang="en"><span>Wikimedia Commons</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a 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decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">Denne artikkelen <b>trenger flere eller bedre <a href="/wiki/Wikipedia:Bruk_av_kilder" title="Wikipedia:Bruk av kilder">referanser</a> for <a href="/wiki/Wikipedia:Verifiserbarhet" title="Wikipedia:Verifiserbarhet">verifikasjon</a></b>.<span class="hide-when-compact"> Du kan <a class="external text" href="https://no.wikipedia.org/w/index.php?title=Isomeri&action=edit">forbedre denne artikkelen</a> ved å legge inn <a href="/wiki/Wikipedia:Bruk_av_kilder#Fotnoter" title="Wikipedia:Bruk av kilder">referanser</a> til <a href="/wiki/Wikipedia:Gode_kilder" title="Wikipedia:Gode kilder">gode kilder</a>. <a href="/wiki/Wikipedia:Hvem_skriver_Wikipedia" title="Wikipedia:Hvem skriver Wikipedia">Hvem som helst</a> kan <a href="/wiki/Wikipedia:Verifiserbarhet#Bevisbyrden" title="Wikipedia:Verifiserbarhet">fjerne</a> kildeløst materiale <a href="/wiki/Wikipedia:Verifiserbarhet#Bevisbyrden" title="Wikipedia:Verifiserbarhet">uten forvarsel</a>, men den foretrukne tilnærmingen er i første omgang å markere de setningene/påstandene som trenger kildebelegg ved å tilføye <i>{{<a href="/wiki/Mal:Trenger_referanse" title="Mal:Trenger referanse">Trenger referanse</a>|dato=2024-11}}</i> etter påstanden. <i><small>2020</small></i></span></div></td></tr></tbody></table> <p><b>Isomeri</b> er et fenomen som innebærer at ulike <a href="/wiki/Kjemi" title="Kjemi">kjemiske</a> forbindelser kan ha samme <a href="/wiki/Kjemisk_formel" title="Kjemisk formel">molekylformel</a>, men ulike arrangementer av <a href="/wiki/Atom" title="Atom">atomene</a> og derfor ulike egenskaper. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Strukturisomeri">Strukturisomeri</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Isomeri&veaction=edit&section=1" title="Rediger avsnitt: Strukturisomeri" class="mw-editsection-visualeditor"><span>rediger</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Isomeri&action=edit&section=1" title="Rediger kildekoden til seksjonen Strukturisomeri"><span>rediger kilde</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Strukturisomere forbindelser har samme molekylformel, men forskjellige strukturformler. </p> <div class="mw-heading mw-heading3"><h3 id="Kjedeisomeri">Kjedeisomeri</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Isomeri&veaction=edit&section=2" title="Rediger avsnitt: Kjedeisomeri" class="mw-editsection-visualeditor"><span>rediger</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Isomeri&action=edit&section=2" title="Rediger kildekoden til seksjonen Kjedeisomeri"><span>rediger kilde</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Kjedeisomere forbindelser har samme molekylformel, men forskjellige arrangeringer av karbonatomene. </p><p><span class="mw-default-size" typeof="mw:File"><a href="/wiki/Fil:Kjedeisomeri.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/d/d5/Kjedeisomeri.png" decoding="async" width="268" height="94" class="mw-file-element" data-file-width="268" data-file-height="94" /></a></span> (iso-Butan) </p> <div class="mw-heading mw-heading3"><h3 id="Stillingsisomeri">Stillingsisomeri</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Isomeri&veaction=edit&section=3" title="Rediger avsnitt: Stillingsisomeri" class="mw-editsection-visualeditor"><span>rediger</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Isomeri&action=edit&section=3" title="Rediger kildekoden til seksjonen Stillingsisomeri"><span>rediger kilde</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Stillingsisomere forbindelser har samme molekylformel, men forskjellige plasseringer av den funksjonelle gruppen. </p><p><span class="mw-default-size" typeof="mw:File"><a href="/wiki/Fil:Stillingsisomeri.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/c/c3/Stillingsisomeri.png" decoding="async" width="319" height="94" class="mw-file-element" data-file-width="319" data-file-height="94" /></a></span> </p> <div class="mw-heading mw-heading3"><h3 id="Funksjonsisomeri">Funksjonsisomeri</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Isomeri&veaction=edit&section=4" title="Rediger avsnitt: Funksjonsisomeri" class="mw-editsection-visualeditor"><span>rediger</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Isomeri&action=edit&section=4" title="Rediger kildekoden til seksjonen Funksjonsisomeri"><span>rediger kilde</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Funksjonsisomere forbindelser har samme molekylformel, men forskjellige funksjonelle grupper. </p><p><span class="mw-default-size" typeof="mw:File"><a href="/wiki/Fil:Funksjonsisomeri.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/d/dd/Funksjonsisomeri.png" decoding="async" width="326" height="50" class="mw-file-element" data-file-width="326" data-file-height="50" /></a></span> </p> <div class="mw-heading mw-heading3"><h3 id="Tautomeri">Tautomeri</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Isomeri&veaction=edit&section=5" title="Rediger avsnitt: Tautomeri" class="mw-editsection-visualeditor"><span>rediger</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Isomeri&action=edit&section=5" title="Rediger kildekoden til seksjonen Tautomeri"><span>rediger kilde</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Tautomeri" class="mw-redirect" title="Tautomeri">Tautomeri</a> er et spesialtilfelle av strukturell isomeri hvor intramolekylære reaksjoner fører til isomeri. </p> <div class="mw-heading mw-heading2"><h2 id="Stereoisomeri">Stereoisomeri</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Isomeri&veaction=edit&section=6" title="Rediger avsnitt: Stereoisomeri" class="mw-editsection-visualeditor"><span>rediger</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Isomeri&action=edit&section=6" title="Rediger kildekoden til seksjonen Stereoisomeri"><span>rediger kilde</span></a><span class="mw-editsection-bracket">]</span></span></div> <dl><dd><dl><dd><i>Se også</i> <a href="/wiki/Stereoisomeri" title="Stereoisomeri">Stereoisomeri</a></dd></dl></dd></dl> <p>Stereoisomere forbindelser har samme strukturformel, men forskjellige plasseringer av atomgruppene i rommet. En del slike isomerer kan dreie <a href="/wiki/Polarisert_lys" class="mw-redirect" title="Polarisert lys">polarisert lys</a> så polariseringen dreies til høyre, dexter-formen. Den motsatte isomeren vil dreie polariseringen til venstre, levo-formen. </p> <div class="mw-heading mw-heading3"><h3 id="Optisk_isomeri_eller_rom-isomeri">Optisk isomeri eller rom-isomeri</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Isomeri&veaction=edit&section=7" title="Rediger avsnitt: Optisk isomeri eller rom-isomeri" class="mw-editsection-visualeditor"><span>rediger</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Isomeri&action=edit&section=7" title="Rediger kildekoden til seksjonen Optisk isomeri eller rom-isomeri"><span>rediger kilde</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Hvis et karbonatom i en forbindelse er bundet til fire andre <i>forskjellige</i> grupper er karbonatomet et <a href="/wiki/Stereosenter" title="Stereosenter">kiralt senter</a>. Et molekyl som har ett kiralt senter finnes i to stereoisomere. Vi sier at molekylet er <a href="/wiki/Kiralitet" title="Kiralitet">kiralt</a>, som betyr at det ikke har symmetrilinjer. </p><p><span class="mw-default-size" typeof="mw:File"><a href="/wiki/Fil:Optisk_isomeri_1.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/5/56/Optisk_isomeri_1.png" decoding="async" width="656" height="230" class="mw-file-element" data-file-width="656" data-file-height="230" /></a></span> </p> <div class="mw-heading mw-heading3"><h3 id="Geometrisk_isomeri_eller_cis-trans-isomeri">Geometrisk isomeri eller cis-trans-isomeri</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Isomeri&veaction=edit&section=8" title="Rediger avsnitt: Geometrisk isomeri eller cis-trans-isomeri" class="mw-editsection-visualeditor"><span>rediger</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Isomeri&action=edit&section=8" title="Rediger kildekoden til seksjonen Geometrisk isomeri eller cis-trans-isomeri"><span>rediger kilde</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>En type cis-trans-isomere forbindelser har forskjellig plassering av atomgruppene på begge sider av en dobbeltbinding. Når to like grupper står på samme side av en dobbeltbinding kalles forbindelsen cis. Når de står på forskjellige sider, kalles forbindelsen trans. </p><p><span class="mw-default-size" typeof="mw:File"><a href="/wiki/Fil:Cis_trans_isomeri_1.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/9/92/Cis_trans_isomeri_1.png" decoding="async" width="298" height="114" class="mw-file-element" data-file-width="298" data-file-height="114" /></a></span> </p><p>Trans-cis-isomeri kan også forekomme på samme eller hver sin side i et molekyl som danner ringer med to sidegrupper. Gruppene kan da være plassert på samme side eller hver sin side av ringen. </p><p><span class="mw-default-size" typeof="mw:File"><a href="/wiki/Fil:Cis_trans_isomeri_2.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/1/1d/Cis_trans_isomeri_2.png" decoding="async" width="405" height="145" class="mw-file-element" data-file-width="405" data-file-height="145" /></a></span> </p> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r23230704">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol 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