Synthesis of Two Molybdenum(Ⅵ) Complexes Coordinated by Schiff Base Derivatives: N-Phenyl-2-hidroxy-1-naphthaldimine and N-Benzyl-2-hidroxy-1 -naphthaldimine. Molecular and Crystal Structure of [MoO_2(C_5H_7O_2)(OCH3)(2-OC_(10)H_6CH=NHC_6H_5)]

摘要

The synthesis of two monomeric molybdenum(Ⅵ) Schiff base complexes derived from N-phenyl-2-hidroxy-1-naphthaldimine and N-benzyl-2-hidroxy-1-naphthaldimine: [MoO_2(C_5H_7O_2)(OCH_3)(2-OC_(10)H_6CH=NHC_6H_5)] (Ⅰ) and [MoO_2(C_5H_7O_2)(OCH_3)(2-OC_(10)H_6CH=NHCH_2C_6H_5)] (Ⅱ) described in this paper are the first examples in which potentially bidentate Schiff bases are monodentately bonded to molybdenum as zwitterionic ligands. The structure of complex Ⅰ was determined by X-ray analysis. Within the same ligand, the hydrogen atom attached to nitrogen forms an intramolecular hydrogen bond of 2.548(2) A with the oxygen atom coordinated to molybdenum. The octahedral coordination of molybdenum is completed by two oxo-oxygens, two acetylacetonato oxygens and one methoxy oxygen. The compounds were characterized by chemical analysis, IR spectroscopy and single crystal structure determination.