In chemistry the term stannate refers to compounds of tin (Sn).

Stannic acid Tin(IV) oxide, also known as stannic oxide, is the inorganic compound with the formula SnO2. The mineral form of SnO2 is called cassiterite, and this is the main ore of tin. With many other names, this oxide of tin is an important material in tin ...

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

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Examples

* Barium metastannate (BaSnO₃) * Cobalt stannate (Co₂SnO₄), primary constituent of the pigment

cerulean blue Cerulean (), also spelled caerulean, is a shade of blue ranging between azure and a darker sky blue. The first recorded use of ''cerulean'' as a colour name in English was in 1590. The word is derived from the Latin word '' caeruleus'', "da ...

* 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