Syntheses, characterizations and theoretical calculations of rhodium(III) 1,2-naphthoquinone-1-oxime complexes

Rhodium(III) complexes of 1,2-naphthoquinone-1-oxime (1-nqo) [Rh(1-nqo)L2Cl2] 1–3 (L=4-methylpyridine, 4-phenylpyridine and 4-acetylpyridine, respectively) were synthesized and characterized by FAB MS, 1H–1H COSY NMR, FT-IR, as well as single crystal X-ray crystallography for complex 1. The electron transfer properties of the complexes were studied by electronic absorption spectroscopy and electrochemistry, as well as theory calculations using density functional theory (DFT).