Abstract
A new synthetic procedure is described to prepare acidopentacyano-cobaltate (III) complexes: [Co(CN)5X]3- (X = Cl,Br,I,NO2). Salts of [Co(CN)5N3]3- are treated with KNO2 in acid medium in the presence of the coordinating anion X. The compounds were characterized by spectrophotometric and analytical techniques.