Cationic and Anionic Dinuclear Nickel Complexes [Ni(N2S2)Ni(dtc)]~n (n = -1, +1) Modeling the Active Site of Acetyl-CoA Synthase

摘要

Two dinuclear nickel complexes (Et4N)[Ni(mbpa)-Ni(dtc~(Et))] (1) (dtc~(Et) = diethyldithiocarbamate) and [Ni(dadt~(Et))-Ni(dtc~(Me))](BPh4) (2) (dtc~(Me) = dimethyldithiocarbamate) have been synthesized as models for the active site of acetyl-CoA synthase (ACS). Cyclic voltammograms show that each complex exhibits a reduction wave, in which the reduction potential of the anion 1 exhibits a significant negative shift from that of the cation 2.