Chemistry:Metallate
Metallate or metalate is the name given to any complex anion containing a metal ligated to two or more atoms and/or groups of atoms. Typically, the metal is one of the transition elements and the ligand is oxygen or another chalcogenide, a cyanide group or a halogen (though others are known).
The chalcogenide metallates are known as oxometallates, thiometallates, selenometallates and tellurometallates; the cyanide metallates are known as cyanometallates; the halogenide metalates are known as halogenometallates.
Oxometallates include permanganate MnO−
4, chromate CrO2−
4, vanadate VO−
3 or VO3−
4 and tungstate WO2−
4.
Thiometallates include tetrathiovanadate VS3−
4, tetrathiomolybdate MoS2−
4, tetrathiotungstate WS2−
4and similar ions.[1]
Cyanometallates include ferricyanide [Fe(CN)
6]3−, ferrocyanide [Fe(CN)
6]4− and dicyanoargentate(I) [Ag(CN)
2]−
.
Halogenometallates include tetrachloroaluminate [AlCl
4]−
, tetrachloronickelate(II) [NiCl
4]2− and hexafluoroplatinate(V) [PtCl
6]−
.
Others include tetranitratoaluminate [Al(NO
3)
4]−
and tetrahydroxozincate [Zn(OH)
4]2−.
Metallate is also used as a verb by bioinorganic chemistry to describe the act of adding metal atoms or ions to a site (synthetic ligand or protein).
See also
References
- ↑ Diemann, E.; Müller, A. (1973). "Schwefel- und Selenverbindungen von Übergangsmetallen mit d0-Konfiguration". Coordination Chemistry Reviews 10 (1–2): 79–122. doi:10.1016/S0010-8545(00)80232-5.
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