Tin(IV) sulfide
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| Tin(IV) sulfide | |
|---|---|
| Other names | tin disulfide, stannic sulfide, mosaic gold |
| Identifiers | |
| CAS number | [1315-01-1] |
| Properties | |
| Molecular formula | SnS2 |
| Molar mass | 182.81 g/mol |
| Appearance | gold-yellow odorless powder |
| Density | 4.5 g/cm3, solid |
| Melting point |
<680 °C |
| Solubility in water | insoluble |
| Hazards | |
| EU classification | not listed |
| NFPA 704 |
 0
1
0
|
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Tin(IV) sulfide is a chemical compound with the formula SnS2. The compound crystallizes in the cadmium iodide motif, with the Sn(IV) situated in "octahedral holes' defined by six sulfide centers.[1] It occurs naturally as the rare mineral berndtite.[2]
The compound precipitates as a brown solid upon the addition of H2S to solutions of tin(IV) species. This reaction is reverses at low pH. Crystalline SnS2 has a bronze colour and is used in decorative coating[3] where it is known as mosaic gold.
The material also reacts with sulfide salts to give a series of thiostannates with the formula [SnS2]m[S]n2n−. A simplified equation for this depolymerization reaction is
- SnS2 + S2− → 1/x{SnS32−}x.
[edit] References
- ^ Wells, A.F. (1984) Structural Inorganic Chemistry, Oxford: Clarendon Press. ISBN 0-19-855370-6.
- ^ Vaughan, D. J.; Craig, J. R. "Mineral Chemistry of Metal Sulfides" Cambridge University Press, Cambridge: 1978. ISBN 0521214890.
- ^ Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5.
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