Selenium hexasulfide: Difference between revisions

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Updating {{chembox}} (no changed fields - added verified revid - updated 'UNII_Ref', 'ChemSpiderID_Ref', 'StdInChI_Ref', 'StdInChIKey_Ref', 'ChEMBL_Ref', 'KEGG_Ref') per Chem/Drugbox validation (
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{{chembox
{{chembox
| Watchedfields = changed
| verifiedrevid = 414435621
| verifiedrevid = 427848433
| Name = Selenium hexasulfide
| Name = Selenium hexasulfide
| OtherNames = {{ubl|Diselenacyclooctasulfane|Diselenaoctathiocane|Diselenium hexasulfide}}
| Reference = <ref name="hand">
| Reference = <ref name="hand">
{{Citation|last = Lide|first = David R.|author-link =|year = 1998|title = Handbook of Chemistry and Physics|edition = 87|volume =|series =|location = Boca Raton, Florida|publisher = CRC Press|id =|isbn = 0-8493-0594-2|doi =|oclc =|pages = 4–81|url =}}</ref>
{{Citation
⚫
| ImageFileL1 = 1,2-Selenium hexasulfide.png
| last = Lide
| ImageCaptionL1 = 1,2-Selenium<br>hexasulfide
| first = David R.
| ImageSizeL1 = 105<!-- allotrope images have unequal widths; we want equal appearance here -->
| author-link =
| ImageFileR1 = 1,3-Selenium hexasulfide.png
| last2 =
| ImageCaptionR1 = 1,3-Selenium<br>hexasulfide
| first2 =
| ImageSizeR1 = 114
| author2-link =
| ImageFileL2 = 1,4-Selenium hexasulfide.png
| publication-date =
| ImageCaptionL2 = 1,4-Selenium<br>hexasulfide
| date =
| year = 1998
| ImageSizeL2 = 114
| ImageFileR2 = 1,5-Selenium hexasulfide.png
| title = Handbook of Chemistry and Physics
| ImageCaptionR2 = 1,5-Selenium<br>hexasulfide
| edition = 87
| volume =
| ImageSizeR2 = 105
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|Section1={{Chembox Identifiers
| series =
| index1_label=1,2
| publication-place = Boca Raton, FL
| index5_label=1,5
| place =
| CASNo_Ref = {{cascite|correct|??}}
| publisher = CRC Press
⚫
| CASNo = 75926-26-0
| id =
| ChemSpiderID1 = 9296780
| isbn = 0-8493-0594-2
| ChemSpiderID5 = 9057901
| doi =
| PubChem1 = 11121651
| oclc =
| pages = 4–81
| PubChem5 = 10882632
| InChI1=1S/S6Se2/c1-2-4-6-8-7-5-3-1
| url =
| InChIKey1 = GVMSZJKNEHYJTG-UHFFFAOYSA-N
| accessdate =
| SMILES1 = S1SSS[Se][Se]SS1
}}</ref>
| InChI5=1S/S6Se2/c1-3-7-5-2-6-8-4-1
| ImageFile =
| InChIKey5 = XHXZYRZXIYIDIG-UHFFFAOYSA-N
| ImageSize =
| SMILES5 = S1S[Se]SSS[Se]S1
⚫
| ImageName = Selenium hexasulfide
| OtherNames =
⚫
| Section1 = {{Chembox Identifiers
⚫
| CASNo = 75926-26-0
}}
}}
| Section2 = {{Chembox Properties
|Section2={{Chembox Properties
| Formula = Se<sub>2</sub>S<sub>6</sub>
| Formula = {{chem2|Se2S6}}
| Se=2|S=6
| MolarMass = 350.32 g/mol
| Appearance = orange needles
| Appearance = orange needles
| Density = 2.44 g/cm<sup>3</sup>
| Density = 2.44 g/cm<sup>3</sup>
| Solubility =
| Solubility =
| SolubleOther = soluble in [[carbon disulfide]]
| SolubleOther = soluble in [[carbon disulfide]]
| MeltingPt = 121.5°C
| MeltingPtC = 121.5
| BoilingPt =
| BoilingPt =
}}
}}
| Section3 = {{Chembox Structure
|Section3={{Chembox Structure
| CrystalStruct =
| CrystalStruct =
}}
}}
| Section7 = {{Chembox Hazards
|Section7={{Chembox Hazards
| EUClass = not listed
}}
}}
}}
}}


'''Selenium hexasulfide''' is a [[chemical compound]] with formula Se<sub>2</sub>S<sub>6</sub>. Its molecule is a ring of two [[selenium]] and six [[sulfur]] atoms, analog to the S<sub>8</sub> [[allotrope]] of sulfur ([[cyclooctasulfur]]) and other selenium [[sulfide]]s with formula Se<sub>''n''</sub>S<sub>8-''n''</sub>.<ref name=laitinen/>
'''Selenium hexasulfide''' is a [[chemical compound]] with the [[chemical formula]] {{chem2|Se2S6}}. Its molecular structure is an 8-membered ring, consisting of two [[selenium]] and six [[sulfur]] atoms ('''diselenacyclooctasulfane'''), analogous to the {{chem2|S8}} ring, an [[allotrope]] of sulfur ([[cyclooctasulfur]] or cyclooctasulfane), and other 8-membered rings of selenium [[sulfide]]s with formula {{chem2|Se_{''n''}S_{8−''n''}|}}.<ref name=laitinen/>


There are several [[isomer]]s depending on the relative placement of the selenium atoms in the ring: '''1,2''' (with the two Se atoms adjacent), '''1,3''', '''1,4''', and '''1,5''' (with the Se atoms opposite).<ref name=maan>Arto Maaninen, Tristram Chivers, Masood Parvez, Jarkko Pietikäinen, and Risto S. Laitinen (1999), "Syntheses of THF Solutions of SeX<sub>2</sub> (X = Cl, Br) and a New Route to Selenium Sulfides Se<sub>''n''</sub>S<sub>8-''n''</sub> (''n'' = 1−5): X-ray Crystal Structures of SeCl<sub>2</sub>(tht)<sub>2</sub> and SeCl<sub>2</sub>·tmtu". ''Inorganic Chemistry'', volume 38, issue 18, pages 4093–4097 {{doi|10.1021/ic981430h}}</ref> It is an oxidizing agent.
There are several [[isomer]]s depending on the relative placement of the selenium atoms in the ring: '''1,2-diselenacyclooctasulfane''' (with the two Se atoms adjacent), '''1,3-diselenacyclooctasulfane''', '''1,4-diselenacyclooctasulfane''', and '''1,5-diselenacyclooctasulfane''' (with the Se atoms opposite).<ref name=maan>Arto Maaninen, Tristram Chivers, Masood Parvez, Jarkko Pietikäinen, and Risto S. Laitinen (1999), "Syntheses of THF Solutions of SeX<sub>2</sub> (X = Cl, Br) and a New Route to Selenium Sulfides Se<sub>''n''</sub>S<sub>8−''n''</sub> (''n'' = 1−5): X-ray Crystal Structures of SeCl<sub>2</sub>(tht)<sub>2</sub> and SeCl<sub>2</sub>·tmtu". ''Inorganic Chemistry'', volume 38, issue 18, pages 4093–4097. {{doi|10.1021/ic981430h}}</ref> It is an oxidizing agent.


The 1,2 isomer can be prepared by reaction of [[chlorosulfane]]s and [[dichlorodiselane]] with [[potassium iodide]] in [[carbon disulfide]]. The reaction produces also [[cyclooctaselenium]] Se8 and all other eight-member cyclic selenium sulfides, except SeS7, and several six- and seven-membered rings.
The 1,2 isomer can be prepared by reaction of [[Sulfur chloride|chlorosulfanes]] and [[dichlorodiselane]] with [[potassium iodide]] in [[carbon disulfide]]. The reaction produces also [[cyclooctaselenium]] {{chem2|Se8}} and all other eight-member [[Cyclic compound|cyclic]] selenium sulfides, except selenacyclooctasulfane {{chem2|SeS7}}, and several six- and seven-membered rings.<ref name=laitinen>Risto S. Laitinen, Pentti Pekone, Yrjö Hiltunen and Tapanin A. Pakkanen (1989), "The <sup>77</sup>S NMR spestroscopic Identification of Heterocyclic Selenium Sulfides Prepared by the Reactions of Chlorosulfanes and Dichlorodiselane with Potassium Iodide". ''Acta Chemica Scandinavica'', volume 43, pages 436-440. {{doi|10.3891/acta.chem.scand.43-0436}}</ref>
<ref name=laitinen>Risto S. Laitinen, Pentti Pekone, Yrjö Hiltunen and Tapanin A. Pakkanen (1989), "The 77s NMR spestroscopic Identification of Heterocyclic Selenium Sulfides Prepared by the Reactions of Chlorosulfanes and Dichlorodiselane with Potassium Iodide". ''Acta Chemica Scandinavica'', volume 43, pages 436-440.</ref>


==References==
==References==
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[[Category:Selenium compounds]]
[[Category:Selenium compounds]]
[[Category:Oxidizing agents]]
[[Category:Oxidizing agents]]
[[Category:Interchalcogens]]


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[[ar:سداسي كبريتيد سيلينيوم]]
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