Infrared spectroscopic studies of dimethylglyoxime chelates of nickel, cobalt, copper, palladium and platinum

Infrared spectra of dimethylglyoxime chelates of nickel, cobalt, copper, palladium and platinum are measured in the range 4000-200 cm-1. The shifts of the OH stretching frequencies caused by chelation provide information on hydrogen bonding. The frequency shifts and hydrogen bond distances are calculated from the Lippincott-Schroeder potential using X-ray crystallographic data and compared with the observed values