FTIR spectra of matrix isolated group 1a metal sulphates

Abstract

The FTIR spectra of group 1a metal sulphates, M₂S0₄, were measured in argon, krypton and xenon matrices at the temperature of 10±1 K. Measurements were carried out in the medium and far infrared regions in order to assign the molecular vibrations and particularly those due to the modes of the coordinated metals. The vibrational assignment was supported by theoretical calculations providing the binding energy of the stable equilibrium configurations and the respective vibrational frequencies. The stability of the two stable forms of D_2d and C_2v symmetry is discussed. The FTIR spectra exclude, on the ground of the experimental and theoretical results, the presence of matrix isolated C_2v type M₂SO₄ molecules.

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Notes on contributors

H.M. Nagarathna-Naik

C.N.R. Fellow