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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Rubidiumdichromat</span></h1>
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<div id="mw-content-text" class="mw-body-content mw-content-ltr" lang="de" dir="ltr"><div class="mw-content-ltr mw-parser-output" lang="de" dir="ltr"><table class="wikitable infobox float-right" id="Vorlage_Infobox_Chemikalie" style="font-size:90%; margin-top:0; width:350px;" summary="Infobox Chemikalie">

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<th colspan="2" style="background:#FFDEAD; color:#202122;">Strukturformel
</th></tr>
<tr>
<td colspan="2" class="hintergrundfarbe-basis skin-invert-image" style="text-align:center;"><span typeof="mw:File"></span>&nbsp;&nbsp;<span typeof="mw:File"></span>&nbsp;&nbsp;<span typeof="mw:File"></span>
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<tr>
<th colspan="2" style="background:#FFDEAD; color:#202122;">Allgemeines
</th></tr>
<tr>
<td style="width:33%;">Name
</td>
<td>Rubidiumdichromat
</td></tr>


<tr>
<td><a href="Summenformel" title="Summenformel">Summenformel</a>
</td>
<td>Rb<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub>
</td></tr>
<tr>
<td>Kurzbeschreibung
</td>
<td>
<p>rote trikline oder gelbe monokline Kristalle<sup id="cite_ref-Perry_1-0" class="reference"><a href="#cite_note-Perry-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>
</p>
</td></tr>
<tr>
<th colspan="2" style="background:#FFDEAD; color:#202122;">Externe Identifikatoren/Datenbanken
</th></tr>
<tr>
<td colspan="2" style="padding:0;">
<table class="mw-collapsible mw-collapsed wikitable" data-expandtext="+" data-collapsetext="−" style="border-top:none; margin:-1px; width:calc(100% + 2px);">

<tbody><tr>
<td style="width:33%;"><a href="CAS-Nummer" title="CAS-Nummer">CAS-Nummer</a>
</td>
<td><span title="Untervorlage eingebunden: CASRN"></span><a rel="nofollow" class="external text" href="https://commonchemistry.cas.org/detail?cas_rn=13446-73-6">13446-73-6</a><span class="editoronly" style="display:none;"></span>
</td>
<td style="background:#FFDEAD; color:#202122; border-top:1px solid #FFDEAD; padding:0.2em 0; vertical-align:bottom; width:5%;">
</td></tr>
<tr>
<td><a href="EG-Nummer" title="EG-Nummer">EG-Nummer</a>
</td>
<td colspan="2">236-602-7
</td></tr>
<tr>
<td><a href="Europ%C3%A4ische_Chemikalienagentur" title="Europäische Chemikalienagentur">ECHA</a>-InfoCard
</td>
<td colspan="2"><a rel="nofollow" class="external text" href="https://www.echa.europa.eu/de/substance-information/-/substanceinfo/100.033.261">100.033.261</a>
</td></tr>
<tr>
<td><a href="PubChem" title="PubChem">PubChem</a>
</td>
<td colspan="2"><a rel="nofollow" class="external text" href="https://pubchem.ncbi.nlm.nih.gov/compound/61606">61606</a>
</td></tr>




<tr>
<td style="border-right:1px solid #a2a9b1;"><a href="Wikidata" title="Wikidata">Wikidata</a>
</td>
<td colspan="2"><a href="https://www.wikidata.org/wiki/Q2171581" class="extiw external" title="d:Q2171581">Q2171581</a>
</td></tr></tbody></table>
</td></tr>








<tr>
<th colspan="2" style="background:#FFDEAD; color:#202122;">Eigenschaften
</th></tr>
<tr>
<td><a href="Molare_Masse" title="Molare Masse">Molare Masse</a>
</td>
<td>386,924&nbsp;<a href="Gramm" title="Gramm">g</a>·<a href="Mol" title="Mol">mol</a><sup>−1</sup>
</td></tr>
<tr>
<td><a href="Aggregatzustand" title="Aggregatzustand">Aggregatzustand</a>
</td>
<td>
<p>fest
</p>
</td></tr>
<tr>
<td><a href="Dichte" title="Dichte">Dichte</a>
</td>
<td>
<ul><li>3,021&nbsp;g·cm<sup>−3</sup> (monoklin)<sup id="cite_ref-Perry_1-1" class="reference"><a href="#cite_note-Perry-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></li>
<li>3,125&nbsp;g·cm<sup>−3</sup> (triklin)<sup id="cite_ref-Perry_1-2" class="reference"><a href="#cite_note-Perry-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></li></ul>
</td></tr>
















<tr>
<th colspan="2" style="background:#FFDEAD; color:#202122;">Sicherheitshinweise
</th></tr>


<tr>
<td colspan="2">
<table cellspacing="0" cellpadding="2" style="width:100%;">




<tbody><tr>
<td colspan="2" style="text-align:center"><b><a href="Global_harmonisiertes_System_zur_Einstufung_und_Kennzeichnung_von_Chemikalien" title="Global harmonisiertes System zur Einstufung und Kennzeichnung von Chemikalien">GHS-Gefahrstoffkennzeichnung</a></b> aus&nbsp;<a href="Verordnung_(EG)_Nr._1272/2008_(CLP)" title="Verordnung (EG) Nr. 1272/2008 (CLP)">Verordnung&nbsp;(EG) Nr.&nbsp;1272/2008&nbsp;(CLP)</a>,<sup id="cite_ref-CLP_100.240.768_3-0" class="reference"><a href="#cite_note-CLP_100.240.768-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> ggf. erweitert<span class="editoronly" style="display:none;"></span><sup id="cite_ref-GESTIS_2-0" class="reference"><a href="#cite_note-GESTIS-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
<table class="hintergrundfarbe-neutral" style="text-align:center; margin-left:auto; margin-right:auto; display:flex; justify-content:center;">

<tbody><tr>
<td><span typeof="mw:File"><a href="Global_harmonisiertes_System_zur_Einstufung_und_Kennzeichnung_von_Chemikalien#Übersicht:_EU-Gefahrensymbole,_UN/GHS-Gefahrenpiktogramme,_UN/ADR-Gefahrensymbole" title="08 – Gesundheitsgefährdend"></a></span>
</td>
<td><span typeof="mw:File"><a href="Global_harmonisiertes_System_zur_Einstufung_und_Kennzeichnung_von_Chemikalien#Übersicht:_EU-Gefahrensymbole,_UN/GHS-Gefahrenpiktogramme,_UN/ADR-Gefahrensymbole" title="07 – Achtung"></a></span>
</td>
<td><span typeof="mw:File"><a href="Global_harmonisiertes_System_zur_Einstufung_und_Kennzeichnung_von_Chemikalien#Übersicht:_EU-Gefahrensymbole,_UN/GHS-Gefahrenpiktogramme,_UN/ADR-Gefahrensymbole" title="09 – Umweltgefährlich"></a></span>
</td></tr></tbody></table>
<p><b>Gefahr</b>
</p>
</td></tr>
<tr>
<td rowspan="2" width="33%" style="border-top:1px #A7A7A7 dashed; border-right:1px #A7A7A7 dashed;"><a href="H-_und_P-S%C3%A4tze" title="H- und P-Sätze">H- und P-Sätze</a>
</td>
<td style="border-top:1px #A7A7A7 dashed;">H: <span title="Untervorlage eingebunden: H-Sätze"></span><a href="H-_und_P-S%C3%A4tze#H-Sätze" title="H- und P-Sätze"><span style="display:inline-block;"><span style="color:#ff5400; border-bottom:1px dotted #ff5400;" title="Kann bei Einatmen Krebs erzeugen.">350i</span></span></a>​‐​<a href="H-_und_P-S%C3%A4tze#H-Sätze" title="H- und P-Sätze"><span style="display:inline-block;"><span style="color:#ff5400; border-bottom:1px dotted #ff5400;" title="Kann allergische Hautreaktionen verursachen.">317</span></span></a>​‐​<a href="H-_und_P-S%C3%A4tze#H-Sätze" title="H- und P-Sätze"><span style="display:inline-block;"><span style="color:#ff5400; border-bottom:1px dotted #ff5400;" title="Sehr giftig für Wasserorganismen mit langfristiger Wirkung.">410</span></span></a>
</td></tr>
<tr>
<td style="border-top:1px #A7A7A7 dashed;">P: <span title="Untervorlage eingebunden: P-Sätze"></span><span style="color:#ff5400; border-bottom:1px dotted #ff5400;" title="Fehlende P-Sätze">?</span>
</td></tr>
</tbody></table>
</td></tr>












<tr>
<td colspan="2" style="background:#FFDEAD; color:#202122; font-size:80%; text-align:center; line-height:150%; padding:.25em;">Wenn nicht anders vermerkt, gelten die angegebenen Daten bei <a href="Standardbedingungen" title="Standardbedingungen">Standardbedingungen</a> (0 °C, 1000&nbsp;hPa).
</td></tr></tbody></table><p><span class="editoronly" style="display:none;"></span>
</p><p><b>Rubidiumdichromat</b> ist eine <a href="Chemische_Verbindung" title="Chemische Verbindung">chemische Verbindung</a> aus <a href="Rubidium" title="Rubidium">Rubidium</a>, <a href="Chrom" title="Chrom">Chrom</a> und <a href="Sauerstoff" title="Sauerstoff">Sauerstoff</a>.
</p>

<div class="mw-heading mw-heading2"><h2 id="Gewinnung_und_Darstellung">Gewinnung und Darstellung</h2></div>
<p>Rubidiumdichromat kann durch Reaktion von Rubidiumcarbonat und <a href="Chrom(VI)-oxid" title="Chrom(VI)-oxid">Chrom(VI)-oxid</a><sup id="cite_ref-brauer_4-0" class="reference"><a href="#cite_note-brauer-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>
</p>
<dl><dd><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathrm {Rb_{2}CO_{3}+2\ CrO_{3}\longrightarrow Rb_{2}Cr_{2}O_{7}+CO_{2}\uparrow } }">
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<annotation encoding="application/x-tex">{\displaystyle \mathrm {Rb_{2}CO_{3}+2\ CrO_{3}\longrightarrow Rb_{2}Cr_{2}O_{7}+CO_{2}\uparrow } }</annotation>
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</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/bd549e29a2a2e857444a7095b89e7664ade0484b.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:43.481ex; height:2.509ex;" alt="{\displaystyle \mathrm {Rb_{2}CO_{3}+2\ CrO_{3}\longrightarrow Rb_{2}Cr_{2}O_{7}+CO_{2}\uparrow } }" loading="lazy"></span></dd></dl>
<p>oder <a href="Ammoniumdichromat" title="Ammoniumdichromat">Ammoniumdichromat</a> mit <a href="Rubidiumchlorid" title="Rubidiumchlorid">Rubidiumchlorid</a> gewonnen werden.<sup id="cite_ref-brauer_4-1" class="reference"><a href="#cite_note-brauer-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>
</p>
<dl><dd><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathrm {(NH_{4})_{2}Cr_{2}O_{7}+2\ RbCl\longrightarrow Rb_{2}Cr_{2}O_{7}+2\ NH_{4}Cl} }">
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<annotation encoding="application/x-tex">{\displaystyle \mathrm {(NH_{4})_{2}Cr_{2}O_{7}+2\ RbCl\longrightarrow Rb_{2}Cr_{2}O_{7}+2\ NH_{4}Cl} }</annotation>
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</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/657f8818b953940bb95a774c53c40b7360afa98e.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:50.93ex; height:2.843ex;" alt="{\displaystyle \mathrm {(NH_{4})_{2}Cr_{2}O_{7}+2\ RbCl\longrightarrow Rb_{2}Cr_{2}O_{7}+2\ NH_{4}Cl} }" loading="lazy"></span></dd></dl>
<div class="mw-heading mw-heading2"><h2 id="Eigenschaften">Eigenschaften</h2></div>
<div class="mw-heading mw-heading3"><h3 id="Physikalische_Eigenschaften">Physikalische Eigenschaften</h3></div>
<p>Rubidiumdichromat kommt in zwei verschiedenen Kristallstrukturen vor:
</p>
<ul><li>Eine <a href="Triklines_Kristallsystem" title="Triklines Kristallsystem">trikline</a> Modifikation mit der <a href="Raumgruppe" title="Raumgruppe">Raumgruppe</a> P1(C<sub>i</sub><sup>1</sup>), die die <a href="Gitterparameter" title="Gitterparameter">Gitterparameter</a> a&nbsp;=&nbsp;13,554&nbsp;<a href="%C3%85ngstr%C3%B6m_(Einheit)" title="Ångström (Einheit)">Å</a>, b&nbsp;=&nbsp;7,640&nbsp;Å, c&nbsp;=&nbsp;7,735&nbsp;Å, α&nbsp;=&nbsp;93,64°, β&nbsp;=&nbsp;98,52°, und γ&nbsp;=&nbsp;88,80° hat. In der <a href="Elementarzelle" title="Elementarzelle">Elementarzelle</a> befinden sich 4&nbsp;Formeleinheiten.<sup id="cite_ref-Panagiotopoulos_5-0" class="reference"><a href="#cite_note-Panagiotopoulos-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></li>
<li>Eine <a href="Monoklines_Kristallsystem" title="Monoklines Kristallsystem">monokline</a> Modifikation mit der Raumgruppe P2<sub>1</sub>/n.<sup id="cite_ref-Carter_6-0" class="reference"><a href="#cite_note-Carter-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup></li></ul>
<div class="mw-heading mw-heading3"><h3 id="Chemische_Eigenschaften">Chemische Eigenschaften</h3></div>
<p>Rubidiumdichromat reagiert mit <a href="Chromtrioxid" class="mw-redirect" title="Chromtrioxid">Chromtrioxid</a> zu Rubidiumtetrachromat.<sup id="cite_ref-Loefgren_7-0" class="reference"><a href="#cite_note-Loefgren-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>
</p>
<dl><dd><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathrm {Rb_{2}Cr_{2}O_{7}+2\ CrO_{3}\longrightarrow \ Rb_{2}Cr_{4}O_{13}} }">
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<annotation encoding="application/x-tex">{\displaystyle \mathrm {Rb_{2}Cr_{2}O_{7}+2\ CrO_{3}\longrightarrow \ Rb_{2}Cr_{4}O_{13}} }</annotation>
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</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/8a908c9f89a78030660a177f8972c3653f8ae4cf.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:37.661ex; height:2.509ex;" alt="{\displaystyle \mathrm {Rb_{2}Cr_{2}O_{7}+2\ CrO_{3}\longrightarrow \ Rb_{2}Cr_{4}O_{13}} }" loading="lazy"></span></dd></dl>
<p>Mit <a href="Rubidiumcarbonat" title="Rubidiumcarbonat">Rubidiumcarbonat</a> bildet sich <a href="Rubidiumchromat" title="Rubidiumchromat">Rubidiumchromat</a>.
</p>
<dl><dd><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathrm {Rb_{2}CO_{3}+Rb_{2}Cr_{2}O_{7}\rightarrow 2\ Rb_{2}CrO_{4}+CO_{2}\uparrow } }">
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<annotation encoding="application/x-tex">{\displaystyle \mathrm {Rb_{2}CO_{3}+Rb_{2}Cr_{2}O_{7}\rightarrow 2\ Rb_{2}CrO_{4}+CO_{2}\uparrow } }</annotation>
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</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/d78dfb28e4ac198ed684171f86de083e05f2632e.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:46.057ex; height:2.509ex;" alt="{\displaystyle \mathrm {Rb_{2}CO_{3}+Rb_{2}Cr_{2}O_{7}\rightarrow 2\ Rb_{2}CrO_{4}+CO_{2}\uparrow } }" loading="lazy"></span></dd></dl>
<div class="mw-heading mw-heading2"><h2 id="Verwendung">Verwendung</h2></div>
<p>Rubidiumdichromat wird zur Herstellung von elementarem Rubidium verwendet. Dazu wird es im Hochvakuum bei 500&nbsp;°C mit <a href="Zirconium" title="Zirconium">Zirconium</a> zur Reaktion gebracht:<sup id="cite_ref-Eagleson_8-0" class="reference"><a href="#cite_note-Eagleson-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>
</p>
<dl><dd><span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathrm {Rb_{2}Cr_{2}O_{7}+2\ Zr\longrightarrow \ 2\ Rb+2\ ZrO_{2}+Cr_{2}O_{3}} }">
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<annotation encoding="application/x-tex">{\displaystyle \mathrm {Rb_{2}Cr_{2}O_{7}+2\ Zr\longrightarrow \ 2\ Rb+2\ ZrO_{2}+Cr_{2}O_{3}} }</annotation>
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</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/e11c0ebe71db3bad9256ddd2753e5d11e5023f4a.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:47.026ex; height:2.509ex;" alt="{\displaystyle \mathrm {Rb_{2}Cr_{2}O_{7}+2\ Zr\longrightarrow \ 2\ Rb+2\ ZrO_{2}+Cr_{2}O_{3}} }" loading="lazy"></span></dd></dl>
<div class="mw-heading mw-heading2"><h2 id="Einzelnachweise">Einzelnachweise</h2></div>
<ol class="references">
<li id="cite_note-Perry-1"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-Perry_1-0">a</a></sup> <sup><a href="#cite_ref-Perry_1-1">b</a></sup> <sup><a href="#cite_ref-Perry_1-2">c</a></sup></span> <span class="reference-text">Dale L. Perry, Sidney L. Phillips: <i>Handbook of inorganic compounds</i>. CRC Press, 1995, ISBN 978-0-8493-8671-8, S. 334 (<a rel="nofollow" class="external text" href="https://books.google.de/books?id=0fT4wfhF1AsC&amp;pg=PA334#v=onepage">eingeschränkte Vorschau</a> in der Google-Buchsuche).</span>
</li>
<li id="cite_note-GESTIS-2"><span class="mw-cite-backlink"><a href="#cite_ref-GESTIS_2-0">↑</a></span> <span class="reference-text">Eintrag zu <span style="font-style:italic;"><a rel="nofollow" class="external text" href="https://gestis.dguv.de/data?name=082830">Chrom(VI)-verbindungen</a></span> in der <a href="GESTIS-Stoffdatenbank" title="GESTIS-Stoffdatenbank">GESTIS-Stoffdatenbank</a> des <a href="Institut_f%C3%BCr_Arbeitsschutz_der_Deutschen_Gesetzlichen_Unfallversicherung" title="Institut für Arbeitsschutz der Deutschen Gesetzlichen Unfallversicherung">IFA</a>, abgerufen am 10.&nbsp;Januar 2017.<small class="noscript"><span></span> (JavaScript erforderlich)</small></span>
</li>
<li id="cite_note-CLP_100.240.768-3"><span class="mw-cite-backlink"><a href="#cite_ref-CLP_100.240.768_3-0">↑</a></span> <span class="reference-text">Nicht explizit in <a href="Verordnung_(EG)_Nr._1272/2008_(CLP)#Anhang_VI" title="Verordnung (EG) Nr. 1272/2008 (CLP)">Verordnung (EG) Nr. 1272/2008 (CLP)</a> gelistet, fällt aber mit der angegebenen Kennzeichnung unter den Gruppeneintrag <span style="font-style:italic;"><a rel="nofollow" class="external text" href="https://chem.echa.europa.eu/100.240.768/harmonised">Chromium (VI) compounds, with the exception of barium chromate and of compounds specified elsewhere in this Annex</a></span> in der Datenbank <i>ECHA CHEM</i> der <a href="Europ%C3%A4ische_Chemikalienagentur" title="Europäische Chemikalienagentur">Europäischen Chemikalienagentur</a> (ECHA), abgerufen am 1.&nbsp;Februar 2016. Hersteller bzw. <a href="Inverkehrbringen_von_Produkten_(EU-Wirtschaftsrecht)" title="Inverkehrbringen von Produkten (EU-Wirtschaftsrecht)">Inverkehrbringer</a> können die harmonisierte Einstufung und Kennzeichnung <a rel="nofollow" class="external text" href="https://www.reach-clp-biozid-helpdesk.de/de/CLP/Einstufung/Selbsteinstufung/Selbsteinstufung.html">erweitern</a>.</span>
</li>
<li id="cite_note-brauer-4"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-brauer_4-0">a</a></sup> <sup><a href="#cite_ref-brauer_4-1">b</a></sup></span> <span class="reference-text"><a href="Georg_Brauer" title="Georg Brauer">Georg Brauer</a> (Hrsg.) u.&nbsp;a.: <i>Handbuch der Präparativen Anorganischen Chemie.</i> 3., umgearbeitete Auflage. Band III, Ferdinand Enke, Stuttgart 1981, ISBN 3-432-87823-0, S. 1526.</span>
</li>
<li id="cite_note-Panagiotopoulos-5"><span class="mw-cite-backlink"><a href="#cite_ref-Panagiotopoulos_5-0">↑</a></span> <span class="reference-text">N. Ch. Panagiotopoulos, I. D. Brown: <i><a rel="nofollow" class="external text" href="http://www.nrcresearchpress.com/doi/pdf/10.1139/v70-089">Crystal structure of triclinic rubidium dichromate, Rb<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub></a>.</i> In: <i><a href="Canadian_Journal_of_Chemistry" title="Canadian Journal of Chemistry">Canadian Journal of Chemistry</a></i>. 48 (4), 1970, S.&nbsp;537, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1139/v70-089">10.1139/v70-089</a></span>.<span class="editoronly" style="display:none;"></span></span>
</li>
<li id="cite_note-Carter-6"><span class="mw-cite-backlink"><a href="#cite_ref-Carter_6-0">↑</a></span> <span class="reference-text">Robert L. Carter: "Comparison of the vibrational spectra of K<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub>, Rb<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> and Cs<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub>" in <i>Spectrochimica Acta A</i> <b>1973</b>, <i>29</i>(2), S. 253–262. <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1016/0584-8539%2873%2980069-8">10.1016/0584-8539(73)80069-8</a></span></span>
</li>
<li id="cite_note-Loefgren-7"><span class="mw-cite-backlink"><a href="#cite_ref-Loefgren_7-0">↑</a></span> <span class="reference-text">Percy Löfgren: "The crystal structure of rubidium tetrachromate, Rb<sub>2</sub>Cr<sub>4</sub>O<sub>13</sub>" in <i>Acta Cryst.</i> <b>1973</b>, <i>29</i>, S. 2141. <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1107/S0567740873006242">10.1107/S0567740873006242</a></span></span>
</li>
<li id="cite_note-Eagleson-8"><span class="mw-cite-backlink"><a href="#cite_ref-Eagleson_8-0">↑</a></span> <span class="reference-text">Mary Eagleson: <i>Concise encyclopedia chemisry</i> Berlin; New York: de Gruyter, 1994, ISBN 3-11-011451-8, S.&nbsp;958 (<a rel="nofollow" class="external text" href="https://books.google.de/books?id=Owuv-c9L_IMC&amp;pg=PA958#v=onepage">eingeschränkte Vorschau</a> in der Google-Buchsuche).</span>
</li>
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