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An MP2 ab initio study of the interaction between a H2O molecule and trans-[Pt(OH)2(NH3)2] revealed a HO−H⋅⋅⋅PtII hydrogen bond (see picture) with a strong dispersion component (ca. 4 kcal mol−1). This dispersion interaction is independent of the charge on the complex and is likely to be ubiquitous in aqueous solutions of PtII complexes.
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Kozelka et al. (2000) studied this question.
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