Abstract
New molybdenum complexes were prepared by the reaction of [Mo VIO 2(acac) 2] or (NH 4) 2[Mo VOCl 5] with different N-substituted pyridoxal thiosemicarbazone ligands (H 2L 1 = pyridoxal 4-phenylthiosemicarbazone; H 2L 2 = pyridoxal 4-methylthiosemicarbazone, H 2L 3 = pyridoxal thiosemicarbazone). The investigation of monomeric [MoO 2L 1(CH 3OH)] or polymeric [MoO 2L 1–3] molybdenum(VI) complexes revealed that molybdenum is coordinated with a tridentate doubly-deprotonated ligand. In the oxomolybdenum(V) complexes [MoOCl 2(HL 1–3)] the pyridoxal thiosemicarbazonato ligands are tridentate mono-deprotonated. Crystal and molecular structures of molybdenum(VI) [MoO 2L 1(CH 3OH)]·CH 3OH, and molybdenum(V) complexes [MoOCl 2(HL 1)]·C 2H 5OH, as well as of the pyridoxal thiosemicarbazone ligand methanol solvate H 2L 3 · MeOH, were determined by the single crystal X-ray diffraction method.
Published Version
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