Electromediators Based on the Ni(II) and Cr(III) Complexes with the Redox-Active Ligands in the Synthesis of Sulfur-Containing Organic Compounds

摘要

The chromium(III) tris-o-semiquinolate complex Cr(L~(SQ))3 (L~(SQ) is 3,6-di-tert-butyl-o-semi- quinone) and the monoanionic paramagnetic nickel(II) complex [n-Bu4N][Ni(L_S~(SQ) )(L_S~(DT) )] (L_S~(SQ) is o-thio- semiquinone, L_S~(DT) is benzene-1,2-dithiolate) are considered as electromediators of hydrogen sulfide oxidation in the presence of various organic substrates (hex-1-ene, oct-1-ene, benzene, toluene, and benzoic acid). It is revealed that the electrolysis of hydrogen sulfide at the oxidation potential of the mediators in the presence of the substrates affords the corresponding aliphatic and aromatic thiols in a yield of 62—75%.