Thermodynamic study of structural changes in solutions of dimethyl tellurium with methyl derivatives of zinc subgroup element compounds

The R-T-x dependencies are measured and thermodynamic characteristics of the evaporation process in the dimethylmercury-dimethyltellurium solutions are determined. Thermodynamic analysis of structural of structural changes in solutions of the Te(CH3)2-M(CH3)2 (M=Zn, Cd, Hg) system substantiated formation of solvates structures, wherein four types of specific interactions are realized. Their dissociation energies are evaluated. It is shown that additive character of the ΔHevap0(T)=f(x) dependence and positive deviation from it are conditioned by energy values of the donor-acceptor bond Te → M and specific interactions in the source liquid alkyls. Presence of pentacoordination hydrogen atoms in intramolecular interactions is proved