In chemistry the term stannate refers to compounds of

tin Tin is a chemical element with the symbol Sn (from la, stannum) and atomic number 50. Tin is a silvery-coloured metal. Tin is soft enough to be cut with little force and a bar of tin can be bent by hand with little effort. When bent, t ...

(Sn). Stannic acid (Sn(OH)₄), the formal precursor to stannates, does not exist and is actually a hydrate of SnO₂. The term is also used in naming conventions as a suffix; for example the hexachlorostannate ion is . In materials science, two kinds of tin oxyanions are distinguished: *''orthostannates'' contain discrete units (e.g. K₄SnO₄) or have a

spinel Spinel () is the magnesium/aluminium member of the larger spinel group of minerals. It has the formula in the cubic crystal system. Its name comes from the Latin word , which means ''spine'' in reference to its pointed crystals. Properties S ...

structure (e.g. Mg₂SnO₄) *''metastannates'' with a stoichiometry M^IISnO₃, MSnO₃ which may contain polymeric anions or may be sometimes better described as mixed oxides These materials are

semiconductor A semiconductor is a material which has an electrical resistivity and conductivity, electrical conductivity value falling between that of a electrical conductor, conductor, such as copper, and an insulator (electricity), insulator, such as glas ...

s."Preparation, characterization and structure of metal stannates: a new family of photocatalysts for organic pollutants degradation." ''Handbook of Photocatalysts'' (2010), pp. 493–510.

Nova Science Publishers, Inc. Nova Science Publishers is an academic publisher of books, encyclopedias, handbooks, e-books and journals, based in Hauppauge, New York. It was founded in 1985. A prolific publisher of books, Nova has received criticism from librarians for not ...

, Hauppauge, NY

Examples

* Barium metastannate (BaSnO₃) * Cobalt stannate (Co₂SnO₄), primary constituent of the pigment cerulean blue * Dysprosium stannate (Dy₂Sn₂O₇) * Potassium stannate (formally potassium hexahydroxostannate(IV), formula K₂Sn(OH)₆) * Sodium stannate (formally sodium hexahydroxostannate(IV), formula Na₂Sn(OH)₆)

References

Oxometallates {{Chem-stub

Examples

See also

References