Potassium hexacyanochromate(III) is an inorganic compound with the formula K3[Cr(CN)6]. It consists of three potassium cations and [Cr(CN)6]3− anion. It is a yellow, air-stable, paramagnetic solid. It is isomorphous with potassium ferricyanide.

Synthesis and reactions

The salt is prepared by treating chromium(III) salts with KCN.[1][2][3]

Reduction of hexacyanochromate(III) gives the Cr(II) and Cr(0) derivatives, [Cr(CN)6]4- and [Cr(CN)6]6-, respectively.[4]

References

  1. ^ F. Hein; S. Herzog. "Potassium Hexacyanochromate (III)". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry. Vol. 2 (2 ed.). p. 1373.
  2. ^ Cruser, Frederick Van Dyke; Miller, Edmund H. (1906). "The insoluble Chromicyanides". J. Am. Chem. Soc. 28 (9): 1132–51. doi:10.1021/ja01975a003.
  3. ^ Marvaud, Valérie; Mallah, Talal; Verdaguer, Michel (2004). Potassium Hexacyanochromate(III) and Its 13C-Enriched Analog. Inorganic Syntheses. Vol. 34. p. 144. doi:10.1002/0471653683.ch4.
  4. ^ Eaton, Janice P.; Nicholls, David (1981). "The Complex Cyanides of Chromium(II) and Chromium(0)". Transition Metal Chemistry. 6 (4): 203–206. doi:10.1007/BF00618223. S2CID 96193332.
Allikas: http://en.wikipedia.org/wiki/Potassium_hexacyanochromate(III)
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