Synthesis, structure, and cooperative proton-electron transfer reaction of bis(5,6-diethylpyrazinedithiolato)metal complexes (M = Ni, Pd, Pt)

New proton and electron donors, M(super II)(HL)2 (M = Ni, Pd, Pt; L= 5,6-diethylpyradzinedithiolate), as well as a proton and electron acceptor, Pt(super IV)(L)2 is prepared and characterized. Findings show that the pH-dependent cyclic voltammetry of the M(super II)(HL)2 complexes showed a favorable Gibbs free energy (K(sub com) > 1) for the proton and electron transfer reactions from M(super II)(HL)2 to M(super IV)(L2).