Abstract
A novel family of the general type cis-[Ru II(dppe)LCl 2] {L = C 6H 5N NC(COCH 3) NAr, Ar = 2,4,6-trimethylphenyl (L 1), 2,5-dimethylphenyl (L 2), 4-tolyl (L 3), phenyl (L 4), 4-methoxyphenyl (L 5), 4-chlorophenyl (L 6), 4-nitrophenyl (L 7), 2,5-dichlorophenyl (L 8); dppe = Ph 2P(CH 2) 2PPh 2} has been synthesized. These complexes have been characterized through analytical, spectroscopic (IR, UV–Vis, and NMR) and electrochemical (cyclic voltammetry) techniques. In addition, complex 4 (where L = L 4) has been further characterized by X-ray diffraction analysis. Crystallographic, electrochemical and electronic spectral data are all consistent with the azomethine ligands possessing strong π-acceptor properties. These π-acceptor properties can be “tuned” by a judicious choice of substituent on the azomethine ligand.
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