Table 3 Estimated enthalpies (in kJ mol^-1) for formation of the complexes MAsS(SH)(OH) and M(SH)₂^- in aqueous solution from M(OH₂)₂⁺ and ligand, obtained from polarized SBK MP2 equilibrium geometries, for Cu⁺, Ag⁺, Au⁺, Zn²⁺, Cd²⁺, Hg²⁺, Tl⁺ and Pb²⁺. Hydration enthalpies of ions are estimated using effective radii calculated from M–L bond distances

From: Theoretical studies on metal thioarsenites and thioantimonides: synergistic interactions between transition metals and heavy metalloids