Solubility of salts of d-elements in organic and water-organic solvents: V. Inner-sphere chalcogen S-S contacts in the [Ni(DMSO)(HO)]Cl solvate.

It was proved by the IR spectroscopy that the first coordination sphere of nickel cations in the NiCl·2DMSO·9HO, NiCl·5DMSO·4HO, and NiCl·4DMSO·2HO compounds contains dimethyl sulfoxide and water ligands. According to X-ray structural analysis, in crystals of the NiCl·4DMSO·2HO compound, noncovalent contacts between sulfur atoms of neighboring dimethyl sulfoxide molecules are realized in the inner sphere of the complex. [ABSTRACT FROM AUTHOR]