Silicon sulfide
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2008-01-15T10:55:38Z
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| OtherNames = silicon disulfide
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| CASNo = 13759-10-9
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| Formula = SiS<sub>2</sub>
| MolarMass = 92.218 g/mol
| Appearance = white, grey, or brown needels<br/>rotten egg smell in moist air
| Density = 1.853 g/cm<sup>3</sup>
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| Boiling_notes = 1090 °C (1360 K) sublimes
| Solubility = decomposes
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| CrystalStruct = [[orthorhombic]], [[rhombohedral]]
| Coordination = [[tetrahedral]]
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| Section8 = {{Chembox Related
| OtherAnions = [[silicon dioxide]]
| OtherCations = [[carbon disulfide]]<br/>[[germanium disulfide]]<br/>[[tin(IV) sulfide]]<br/>[[lead(IV) sulfide]]
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'''Silicon sulfide''' refers to the [[chemical compound]] with the formula [[Silicon|Si]][[Sulfur|S<sub>2</sub>]]. This material is polymeric and adopts a structure quite different from the corresponding silicon dioxide [[polymorphism (materials science)|polymorphs]]. The material consists of chains of edge-shared [[tetrahedra]], Si(μ-S)<sub>2</sub>Si(μS)<sub>2</sub> etc. The Si---Si distances at 214 [[picometer]]s are shorter than conventional Si-Si [[single bond]]s.<ref>Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5.</ref>
The material is formed by heating silicon and sulfur or by the exchange reaction between SiO<sub>2</sub> and Al<sub>2</sub>S<sub>3</sub>. Like all silicon sulfur-compounds, SiS<sub>2</sub> hydrolyzes readily to release H<sub>2</sub>S and form hydrated silica gel.
==References==
<references/>
==External links==
[[Category:Sulfides]]
[[Category:Silicon compounds]]
[[Category:Inorganic compound stubs]]
{{inorganic-compound-stub}}