Atomistry » Chromium » Compounds » Chromic Thiocyanate
Atomistry »
  Chromium »
    Compounds »
      Chromic Thiocyanate »

Chromic Thiocyanate, Cr(SCN)3

Chromic Thiocyanate, Cr(SCN)3, is prepared by dissolving freshly precipitated chromic hydroxide in thiocyanic acid and evaporating the green-violet solution over sulphuric acid, or by concentrating a solution of chromithiocyanic acid either by heating or over sulphuric acid. It is obtained as a grey, amorphous, deliquescent mass, which readily dissolves in water to form a violet solution. When freshly prepared, the solution does not answer to the ordinary precipitation reactions for the Cr•• and SCN' ions. However, hydrolytic dissociation gradually takes place, especially under the influence of sunlight; the solution becomes green, and precipitates are obtained with silver nitrate and ammonia solutions. It is soluble in the chief organic solvents.

Ammoniated compounds, of composition Cr(NH3)2(SCN)3.H2O; Cr(NH3)2(SCN)3.2H2O; NH4CNS.Cr(NH3)2(SCN)3; NH4CNS. Cr(NH3)4(SCN)3; Cr(NH3)2(SCN)4.NH4I, have been prepared.

Thiocyano salts of chromium with organic bases, e.g. pyridine and ethylenediamine, have also been obtained.

Last articles

Zn in 7OQY
Zn in 7PEL
Zn in 7OYG
Zn in 7P3S
Zn in 7PE7
Zn in 7RZC
Zn in 7PE9
Zn in 7PE8
Zn in 7RAG
Zn in 7RN5
© Copyright 2008-2020 by atomistry.com
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy