ESR SPECTRA STUDY OF COPPER(Ⅱ) COORDINATION COMPLEXES OF PYRIDI

The ESR spectra of powdered samples of Cu（Ⅱ） complexes with pyridine and its sixhomologues and pyrrol, aniline, as well as their solutions are measured at 77K in this paper.The electronic levels of these complexes are calculated from the ESR spectral parameters.It is found that the non-pyridine ligands of complexes which can be substituted by pyridinemolecules of solvent in solution of pyridine/chloroform form PyCu. A molecular configura-tion is proposed. for PyCuin solution. It is shown that the treatment with Dsymmetryinstead of Dsymmetry leads to a more satisfactory explanation of the ESR spectra.