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Omnitruncated 8-simplex honeycomb - Revision history
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en>Tomruen: /* Related polytopes and honeycombs */
2014-01-21T23:04:18Z
<p><span class="autocomment">Related polytopes and honeycombs</span></p>
<p><b>New page</b></p><div>{{Chembox<br />
| ImageFile = <br />
| ImageSize = 250px<br />
| IUPACName = Rhenium(VII) sulfide<br />
| OtherNames = <br />
| Section1 = {{Chembox Identifiers<br />
| CASNo = 12038-67-4<br />
| PubChem = <br />
| ChemSpiderID = 21171359<br />
| SMILES = S=[Re](=S)(=S)S[Re](=S)(=S)=S<br />
| InChI = 1/2Re.7S/rRe2S7/c3-1(4,5)9-2(6,7)8<br />
| InChIKey = CVHXCQNYOAKCMI-NEHFBHEFAV<br />
| StdInChI = 1S/2Re.7S<br />
| StdInChIKey = CVHXCQNYOAKCMI-UHFFFAOYSA-N<br />
}}<br />
| Section2 = {{Chembox Properties<br />
| Formula = Re<sub>2</sub>S<sub>7</sub><br />
| MolarMass = 596.869 g/mol<br />
| Appearance = <br />
| Density = <br />
| MeltingPt = <br />
| BoilingPt = <br />
| Solubility =<br />
}}<br />
| Section3 = {{Chembox Hazards<br />
| MainHazards = <br />
| FlashPt = <br />
| Autoignition =<br />
}}<br />
}}<br />
<br />
'''Rhenium(VII) sulfide''' is a chemical compound with the [[chemical formula|formula]] Re<sub>2</sub>S<sub>7</sub>. It can be produced through the reaction of [[perrhenate|ReO<sub>4</sub><sup>-</sup>]] and [[Hydrogen sulfide|H<sub>2</sub>S]] in 4N [[Hydrochloric acid|HCl]].<ref>{{Greenwood&Earnshaw}}</ref><br />
<br />
==Synthesis==<br />
* Direct combination of rhenium and sulfur:<br />
:<math>\mathrm{2Re + 7S \ \xrightarrow{\Delta}\ Re_2S_7 }</math><br />
<br />
* Treating [[rhenium(VII) oxide]] with [[hydrogen sulfide]]:<br />
:<math>\mathrm{Re_2O_7 + 7H_2S \ \xrightarrow{\Delta}\ Re_2S_7 + 7H_2O }</math><br />
<br />
==Reactions==<br />
<br />
Rhenium(VII) sulfide decomposes when heated in [[vacuum]]:<br />
:<math>\mathrm{Re_2S_7 \ \xrightarrow{600^oC}\ 2ReS_2 + 3S }</math><br />
<br />
It is converted to oxide when heated in air:<br />
:<math>\mathrm{2Re_2S_7 + 21O_2 \ \xrightarrow{\Delta}\ 2Re_2O_7 + 14SO_2 }</math><br />
<br />
==References==<br />
{{reflist}}<br />
*Химическая энциклопедия / Редкол.: Кнунянц И.Л. и др.. — М.: Советская энциклопедия, 1995. — Т. 4. — 639 с. — ISBN 5-82270-092-4 {{ru icon}}<br />
*Справочник химика / Редкол.: Никольский Б.П. и др.. — 3-е изд., испр. — Л.: Химия, 1971. — Т. 2. — 1168 с. {{ru icon}}<br />
*Рипан Р., Четяну И. Неорганическая химия. Химия металлов. — М.: Мир, 1972. — Т. 2. — 871 с. {{ru icon}}<br />
<br />
{{Rhenium compounds}}<br />
{{Inorganic-compound-stub}}<br />
<br />
[[Category:Rhenium compounds]]<br />
[[Category:Sulfides]]</div>
en>Tomruen