Abstract

Several workers have reported the infrared band positions in the internal mode region of water in CoCl₂ · 2H₂O and its deuterated analog, but no data are available regarding their bandwidths and intensities, which give essential clues to ascertain the coordination effects in the lattice. In the present work these data have been obtained and the spectra have been discussed in terms of hydrogen bonding and M—O_w coordination. A simple model is used for estimating the intensity ratio of the ν₁ and ν₂ bands of bound water. In the ν₂ mode the mechanical and electrical anharmonicities have been computed and discussed.

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