Nomenclature
CAS number: 13682-73-0
Potassium bis(cyano-
C)cuprate(1-); potassium dicyanocuprate(I); potassio-cuprous cyanide; potassium cyanocuprate(I).
C
2CuKN
2; mol wt 154.68.
C 15.53%, Cu 41.08%, K 25.28%, N 18.11%.
KCu(CN)
2.
Description and references
Prepd by evaporation of an aq soln of CuCN
and KCN: Staritzky, Walker, Anal. Chem. 28, 419 (1956).
Properties
Monoclinic, prismatic crystals. d 2.38. Practically insol in water;
dec to CuCN by cold dil H2SO4 or heating in
water; sol in DMSO.Use
In electroplating copper and brass.