View source for Rhenium(VII) sulfide

{{Chembox
| ImageFile = 
| ImageSize = 250px
| IUPACName = Rhenium(VII) sulfide
| OtherNames = 
|Section1={{Chembox Identifiers
| CASNo = 12038-67-4
| CASNo_Ref = {{cascite|correct|CAS}}
| UNII = K72K37878A
| UNII_Ref = {{fdacite|correct|FDA}}
| PubChem = 159414
| ChemSpiderID = 21171359
| DTXSID = DTXSID901022921
| EC_number = 234-882-5
| SMILES = S=[Re](=S)(=S)S[Re](=S)(=S)=S
| InChI = 1/2Re.7S/rRe2S7/c3-1(4,5)9-2(6,7)8
| InChIKey = CVHXCQNYOAKCMI-NEHFBHEFAV
| StdInChI = 1S/2Re.7S
| StdInChIKey = CVHXCQNYOAKCMI-UHFFFAOYSA-N
  }}
|Section2={{Chembox Properties
| Formula = Re<sub>2</sub>S<sub>7</sub>
| MolarMass = 596.869 g/mol
| Appearance = 
| Density = 
| MeltingPt = 
| BoilingPt = 
| Solubility =
  }}
|Section3={{Chembox Hazards
| GHSPictograms = {{GHS06}}{{GHS07}}
| GHSSignalWord = Danger
| HPhrases = {{H-phrases|301|315|319|331|412}}
| PPhrases = {{P-phrases|261|264|270|271|273|280|301+310|302+352|304+340|305+351+338|311|321|330|332+313|337+313|362|403+233|405|501}}
| MainHazards = 
| FlashPt = 
| AutoignitionPt =
  }}
}}

'''Rhenium(VII) sulfide''' is a chemical compound with the [[chemical formula|formula]] Re<sub>2</sub>S<sub>7</sub>. It has a complex structure, but can be synthesized from direct combination of the elements:<ref name=":0">{{cite journal |author1=Schwarz, D. E. |author2=Frenkel, A. I. |author3=Nuzzo, R. G. |author4=Rauchfuss, T. B. |author5=Vairavamurthy, A. |year=2004 |title=Electrosynthesis of {{chem|Re|S|4}}. XAS Analysis of {{chem|Re|S|2}}, {{chem|Re|2|S|7}}, and {{chem|Re|S|4}} |journal=Chemistry of Materials |volume=16 |pages=151–158 |doi=10.1021/cm034467v}}</ref> <chem display="block">2Re{} + 7S ->[{}\atop\Delta] Re2S7</chem>Alternatively, [[rhenium(VII) oxide]] reacts with [[hydrogen sulfide]] in 4N [[Hydrochloric acid|HCl]] to the same end:<ref>{{Greenwood&Earnshaw}}</ref> <chem display="block">Re2O7{} + 7H2S ->[{}\atop\Delta] Re2S7{} + 7H2O</chem>

The compound catalyses the reduction of [[nitric oxide]] to [[nitrous oxide]] and hydrogenation of double bonds.  In this regard, it unusually tolerates sulfur compounds, which poison [[noble metal]] catalysts.<ref name=":0" />

Rhenium(VII) sulfide decomposes when heated.  In [[vacuum]], it generates [[rhenium(IV) sulfide]]:
:<math>\mathrm{Re_2S_7 \ \xrightarrow{600^oC}\ 2ReS_2 + 3S }</math>

In air, the sulfide oxidizes to [[sulfur dioxide]]:
:<math>\mathrm{2Re_2S_7 + 21O_2 \ \xrightarrow{\Delta}\ 2Re_2O_7 + 14SO_2 }</math>

==References==
{{reflist}}
* [[Ivan Knunyants|Kunyants, I.&nbsp;L.]] ''et al'', eds. (1995). ''Химическая энциклопедия'' [''Chemical encyclopedia''] {{in lang|ru}}.  Moscow: Soviet Encyclopedias.  {{ISBN|978-5-85270-092-6}} 
* [[Boris Nikolsky|Nikolsky, B.&nbsp;P.]] ''et al'', eds. (1971). ''Справочник химика'' [''Handbook of Chemistry''] {{in lang|ru}}.  3rd (revised) ed.  [[Leningrad]]: Khimiya Publishing. 
* [[Raluca Ripan|Ripan, R.]]; Ceteanu, I. (1972). ''Химия металлов'' [''Chemistry of Metals''] {{in lang|ru}}. Неорганическая химия [Inorganic chemistry].  Moscow: [[Mir Publishers|Mir]].

{{Rhenium compounds}}
{{Sulfides}}

[[Category:Rhenium compounds]]
[[Category:Sulfides]]


{{Inorganic-compound-stub}}