Some Studies in Inorganic Complexes. VII. Copper(II) with 2-Picolylamine

Abstract

A study has been made of the bis(2-picolylamine) copper(II) complex in association with various anions. Of the salts investigated, the chloride bromide, and nitrate are blue, the iodide is green, and the perchlorate and tetraiodomercurate are purple. Blue solutions are obtained in water, and the molecular absorption spectra are identical and are characteristic of bispicolylamine copper(II) ion. However, conductance measurements in methanol and nitromethane show that there is some metal halogen bonding for the iodide, and this is also indicated by a slight shift in the absorption spectrum to longer wavelengths in the same solvents. The mean magnetic moment of the copper atom in the complexes was found to be 1.93 B.M.