• Source: Stannate

In chemistry, the term stannate or tinnate refers to compounds of tin (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 SnCl2−6.
In materials science, two kinds of tin oxyanions are distinguished:

orthostannates contain discrete SnO4−4 units (e.g. K4SnO4) or have a spinel structure (e.g. Mg2SnO4)
metastannates with a stoichiometry MIISnO3, MI2SnO3 which may contain polymeric anions or may be sometimes better described as mixed oxides
These materials are semiconductors.




Examples


Barium stannate, BaSnO3 (a metastannate)
Cobalt stannate, Co2SnO4, primary constituent of the pigment cerulean blue
Dysprosium stannate, Dy2Sn2O7
Lead stannate, Pb2SnO4, "Type I" lead-tin yellow
Potassium stannate, formally potassium hexahydroxostannate(IV), formula K2Sn(OH)6
Sodium stannate, formally sodium hexahydroxostannate(IV), formula Na2Sn(OH)6




See also


Stannite
Silicate




References

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• Kamus rumus kimia
• Stannate
• Sodium stannate
• Cerulean
• Barium stannate
• Dysprosium stannate
• Blue-green
• Tin
• T-Stoff
• List of inorganic pigments
• Cobalt