Atomistry » Vanadium » Chemical Properties » Potassium Vanadicyanide
Atomistry »
  Vanadium »
    Chemical Properties »
      Potassium Vanadicyanide »

Potassium Vanadicyanide, K3[V(CN)6]

Potassium Vanadicyanide, K3[V(CN)6], is prepared by the addition of excess of concentrated potassium cyanide solution to a concentrated solution of vanadous chloride, VCl3; precipitation in the cold with alcohol gives rise to small rhombohedral plates. The solution is not very stable and rapidly becomes turbid, while addition of an acid produces the green colour which is characteristic of the V••• ion. The complex ion [V(CN)6]''' appears, therefore, to be unstable, unlike the corresponding [Fe(CN)6]''', [Cr(CN)6]''', and [Co(CN)6]''' complex ions. The solution reacts with salts of heavy metals to yield variously coloured precipitates of double cyanides.

An unstable double salt of potassium pyrovanadate and potassium cyanide, K4V2O7.4KCN.14H2O, has been prepared, as well as a complex addition compound of sodium vanadyl cyanide and hexamethylenetetramine, Na3VO(CN)5.2C6H12N4.5H2O.

Last articles

Zn in 7VD8
Zn in 7V1R
Zn in 7V1Q
Zn in 7VPF
Zn in 7T85
Zn in 7T5F
Zn in 7NF9
Zn in 7M4M
Zn in 7M4O
Zn in 7M4N
© Copyright 2008-2020 by atomistry.com
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy