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.
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