A series of square-planar complexes, coordinated by the redox-active ligands dpp-NacNac� (CH[C(Me)(N�iPr2C6H3)]2�) and 9,10-phenanthrenediimine (phdi), of the general formula (dpp�NacNac)M(phdi) [M = Co(I), Rh(I) and Ir(I)] have been prepared and characterized by structural, electrochemical, spectroscopic, and computational methods. The square planar complexes display intense MLCT absorptions in the visible region. However, when oxidized to form the octahedral (dpp-NacNac)M(phdi)Cl2 complexes, an LLCT absorption band becomes the dominant feature of the spectra, where the NacNac ligand acts as the donor ligand and phdi as the acceptor.1 Effects of metal identity with respect to the charge transfer processes were studied by spectral and electrochemical analysis. The effect of substitution of the chloride ligands for neutral ligands will also be presented.1) Shaffer, D.W.; Ryken, S.A.; Zarkesh, R.A.; Heyduk, A.F. Inorganic Chemistry ASAP

Octahedral donor-acceptor complexes of group 9 metals

245th National Meeting (2013)

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