Abstract
A full normal coordinate analysis of the skeleton [N2′ Pt O2′ Pt N2′] of the di-μ-hydroxo-bis(diammine) platinum(II) nitrate has been performed according to the Point Mass Model approximation and assuming a D2h molecular symmetry.The method of construction of a set of 18 independent symmetry valence coordinates was based on the theory of molecular vibrations in dependent rectilinear coordinates. A refined general valence force field which reproduces satisfactorily the frequencies of the molecule and its deuterated analog has been obtained. Calculations of all distributions of vibrational energy allow us to descry ibe all normal modes of vibration and especially the ones related to the square planar ring modes (Pt2O2) showing evidence of strong couplings.In addition we have calculated independently some fragments of the whole dimeric complex, which may be used for comparison with related compounds.
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