The nature of reduced and excited states of p-electron-deficient complexes between tricarbonylhalorhenium and diimine ligands. Inorganic Chemistry, (29)16:2909--2914, 1990. [PUMA: carbonyl charge configuration diimine dinuclear dinuclear;electrochem dinuclear;electron dinuclear;energy dinuclear;rhenium halo level redn rhenium transfer transition]