Organoosmium complexes of imidazole-containing chelate acceptor ligands. Inorganica Chimica Acta, (363)12:3070--3077, 2010. [PUMA: DFT MO;imidazolylketone MO;optimized arene chlorocymeneosmium crystal cymene fluorophosphate;mol imidazolylglyoxal imidazolylketone mol osmium prepn reaction spectroelectrochem structure voltammetry]