2439. Cobaltous Cyanide

Nomenclature

CAS number: 542-84-7
Cobalt cyanide.
C2CoN2; mol wt 110.97.
C 21.65%, Co 53.11%, N 25.24%.

Description and references

Prepn: Ray, Sahu, J. Indian Chem. Soc. 23, 161 (1946); Gmelins, Cobalt (8th ed.) 58, (part A), 364 (1932) and supplement, 712 (1961). Structure reported as Co3[Co(CN)6]2: P. S. Poskozim et al., J. Inorg. Nucl. Chem. 35, 687 (1973). Prepn and structure as Co(CN)2: D. M. S. Mosha, D. Nicholls, Inorg. Chim. Acta 38, 127 (1980).

Properties

Deep-blue, very hygroscopic powder. d425 1.872.

Derivative

Di- to trihydrate.

Properties

Pink to reddish-brown powder or needles. Practically insol in water, acids, methyl acetate; sol in alkali cyanide solns.

Use

In cobalt catalysts.