Abstract
The infrared spectra of a series of basic copper salts and the corresponding deuterated compounds have been studied between 4000 and 270 cm −1 in order to examine the behaviour of the valency and deformation vibrations of the OH groups. The torsional vibration of the OH group has not been observed and its frequency is therefore assumed to be below 270 cm −1. The planar deformation frequencies of the OH group have been observed in the region 600–1050 cm −1. A relationship exists between the deformation frequency and stretching frequency but it is not very exact and cannot be applied to all systems containing hydrogen bonds. The spectra are usually complex and this may be due to the irregular geometric configuration in the octahedral co-ordination to copper.
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