characteristic of inorganic chelating bidentate sulfate which are assigned to asymmetric and symmetric stretching frequencies of S---O and SAO bonds with C2v symmetry and m3 and m1 stretching mode of SO4 2 groups [36].
characteristic of inorganic chelating bidentate sulfate which are assigned to asymmetric and symmetric stretching frequencies of S---O and SAO bonds with C2v symmetry and m3 and m1 stretching mode of SO4 2 groups [36].