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

摘要

A chelating 2-methylpyridylbenzophenoneazine 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 dibromotri-carbonylmolybdenum (II) azine complex. Treatment of the tetracarbonyl complex with 1 mol equivalent of PPh_3 gives the expected tri-carbnonylmolybdenum (0)-azine triphenylphosphine substituted complex.