Abstract
It was found by the measurements of IR, VR, and UV spectra and the electric conductance of Ni (CF3COO)2-halide-MeOH solution that the coordination of halide with Ni2+ ion was in a molar ratio of 1:2 in the solution. When an amount of Ni(CF3COO)2 beyond the coordination value mentioned above was added to the Ni(CF3COO)2-MeOH solution containing an ammonium halide, the electric conductance of the solution decreased. The strength of coordinate bond between Ni(CF3COO)2 and an ammonium halide seemed to be greater than that between Ni(CF3COO)2 and any of other halides.
