Synthesis and spectroscopic characterization of molybdenum(0) and molybdenum(II) carbonyl benzophenoneazine complexes

2540-2543A chelating 2-methylpyridylbenzophenoneazinc ligand has been prepared by the condensation of 2-acetylpyridine with benzophenone hydrazone. Reaction of the ligand with Mo(CO)6 gives 12-methylpyridylbenzophenoneazine) tetracarbonylmolybdenum(0) complex where the ligand is bidentate N, N. Oxidative-addition of the tetracarbonyl complex with 1 mol equivalent of bromine, yields the neutral seven-coordinated dibromotricarbonylmolybdenum( II) azine complex. Treatment of the tetracarbonyl complex with 1 mol equivalent of PPh3 gives the expected tri -carbnonylmolybdenum(0)-azine tri phenylphosphine substituted complex