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.[1] 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, MI
    2    SnO3 which may contain polymeric anions or may be sometimes better described as mixed oxides

These materials are semiconductors.[2]

  1. ^ Holleman, Arnold Frederik; Wiberg, Egon (2001), Wiberg, Nils (ed.), Inorganic Chemistry, translated by Eagleson, Mary; Brewer, William, San Diego/Berlin: Academic Press/De Gruyter, ISBN 0-12-352651-5
  2. ^ "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., Hauppauge, NY