Molar mass 366.7423 g/mol Appearance violet solid | Density 3.81 g/cm³ | |
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Cobalt phosphate is the inorganic compound with the formula Co3(PO4)2. It is a commercial inorganic pigment known as cobalt violet. Thin films of this material catalyze the decomposition of water.
Preparation and structure
It precipitates as a solid tetrahydrate upon mixing aquous solutions of cobalt(II) and phosphate salts. The anhydrous material consists of discrete phosphate (PO3−
4) anions that link Co2+
centres.
The cobalt ions occupy both octahedral (six-coordinate) and pentacoordinate sites in a 1:2 ratio.
References
Cobalt phosphate Wikipedia(Text) CC BY-SA