Redox-active dithiolene ligands can exhibit multiple well-defined charged states, but their coordination chemistry is primarily focused on the ligand in the reduced state. Complexes of these ligands are not only biologically relevant, but have materials science applications as conductors, non-linear optical materials, and as tools for selective noble metal reclamation. In this study, we examined the case in which both fully reduced (dithiolate) and fully oxidized (dithione) ligands are bound to a zinc metal center. N,N’-diisopropylpiperazine-2,3-dithione (iPr2Dt0) was chosen as the primary ligand in order to represent the desired fully oxidized character while maleonitriledithiolate (mnt2-) was chosen to represent the fully reduced state. We also investigated complexes of the dithione ligand with the group 5 transition metal vanadium in varying oxidation states. Complexes were characterized using 1H and 13C NMR, FT-IR spectroscopy, UV-vis spectroscopy, cyclic voltammetry, mass spectrometry, and X-ray crystallography.

Design, synthesis, and characterization of zinc dithiolato/dithione (donor/acceptor) and vanadium dithione complexes

249th National Meeting (2015)

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