The Interaction of Hydrazine with Copper(II) Chloride in Acidic Solutions. The Formation, Spectral and Magnetic Properties, and Structures of Copper(II), Copper(I), and Mixed Valence Species.

摘要

The reaction of hydrazine with copper(II) chloride in acidic aqueous solution has been shown to produce at least four distinct complexes. Hydrazine behaves as a reducing agent, leading to the white, diamagnetic copper(I) complex (N2H4)CuCl and the black paramagnetic mixed-valence copper(I,I,II) complex (N2H5)2Cu2Cl6. Blue and green copper(II) complexes (N2H5)2CuCl4 2H2O and (N2H5)CuCl3 are also formed. Infrared spectra establish the presence of coordinated hydrazinium ions in the blue, green, and black compounds. Structures are proposed for all of these materials based on spectroscopic and magnetic measurements.