A new complex cyanide of Molybdenum

Abstract

A new cyano complex of molybdenum, potassium pentacyano molybdate(IV), KMo(CN)₅, has been prepared in three ways : (i) by direct reaction of molybdenum trioxide and potassium cyanide, (ii) by the oxidation of the black heptacyanide, K₄Mo(CN)₇.2H₂O, and (iii) by heating the brown potassium tetracyano dioxo molybdate(IV), K₄MoO₂(CN)₄.