Studies of Bivalent Metal Complexes of 2-Acetylpyridine

Bivalent metal complexes of 2-acetylpyridine (abbreviated as 2AP), M(2AP)2X2, M being copper, nickel, cobalt, and zinc ions and X being chloride, bromide, and iodide ions, were synthesized in ethanol solutions. The far-infrared analyses were discussed with reference to their structures, which were determined by means of the magnetic moments and the diffuse reflectance spectra. Except for Co(2AP)2Cl2 and Co(2AP)2I2, an octahedral structure was suggested for the M(2AP)2X2 complexes. A tetrahedral structure was assigned to Co(2AP)2Cl2 and Co(2AP)2I2 on the basis of their magnetic moments of 4.55 and 4.25 B.M. respectively and the diffuse reflectance spectra. The stretching vibrations of metal-nitrogen, metal-oxygen, and metal-halogen have been discussed.

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