Structures
Orthotungstates feature tetrahedral W(VI) centres with short W-O distances of 1.79 Å. Structurally, they resemble sulfates. Six-coordinate, octahedral tungsten dominates in the polyoxotungstates. In these compounds, the W-O distances are elongated.
Some examples of tungstate ions::
- HWO4− (hydrogentungstate)
- polymeric W2O72− ions of various structures in Na2W2O7, Li2W2O7 and Ag2W2O7
- 6− (paratungstate A)
- 4− (tungstate Y)
- 10− (paratungstate B)
- α-6− (metatungstate))
- β-6− (tungstate X))
See the tungstates category for a list of tungstates.
Read more about this topic: Tungstate
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