Tin(IV) sulfide is a compound with the formula . A brown, water-insoluble solid, it is a semiconductor with band gap 2.2 eV. It occurs naturally as the rare mineral berndtite.Vaughan, D. J.; Craig, J. R. "Mineral Chemistry of Metal Sulfides" Cambridge University Press, Cambridge: 1978. .
Synthesis and structure
The compound precipitates as a brown solid upon the addition of to solutions containing tin(IV) species. This reaction is reversed at low pH. It can also be prepared by heating finely ground Sn with excess sulfur.
The compound crystallizes in the cadmium iodide motif, with the Sn(IV) situated in "octahedral holes' defined by six sulfide centers.Wells, A.F. (1984) Structural Inorganic Chemistry, Oxford: Clarendon Press. .
The material reacts with sulfide salts to give a series of thiostannates with the formula . A simplified equation for this depolymerization reaction is:
Potential uses Crystalline has a bronze color and is used in decorative coatingHolleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. . where it is known as mosaic gold.
Tin (IV) sulfide has various uses in electrochemistry. It serves as an anode in prototypes of lithium-ion batteries. Intercalation with organometallic reagents is reversible.
It has also been evaluated as a component of supercapacitors, which could be used for energy storage.
See also Mosaic Gold
References
External links
Tin (IV) Sulfide Powder, Stanford Advanced Materials Tin Sulfide (SnS2), PubChem