Synthesis of Compounds of Moocl4 with Nitrogen And Trimethylsilylnitrogen Bases and their Characterization

Abstract

In order to study the vide variety of features of molybdenum complexes, such as, coordination, redox, addition, substitution, elimination, oxo-abstraction, disproportionation, rearrangement, solvation, polymerization and biologically important reactions, reactions of molybdenum(VI) oxide chloride with numerous ligands were carried out. Molybdenum(VI) oxide chloride, MoOCl4 and products of its reactions being very moisture and air sensitive, all the reactions were performed under rigorous moisture/air free conditions in vacuum line with liquid nitrogen cooled traps, under dry nitrogen. All the reactions were carried out at room temperature. Products isolated were characterized by elemental analysis, molar conductance, FTIR, 1H NMR, 13C NMR, UV-Visible, ESR, LC-MS/GC-MS, biological and molar conductance studies. Reactions of molybdenum(VI) oxide chloride in 1:1 and 1:2 molar ratios were carried out with diaminoalkanes, amides, imides, alicyclic and aromatic heterocyclic amines, alkylated heterocyclic amines, trimethylsilylamines, hexamethyldisilazane and lithium amides. Dry dichloromethane and acetonitrile were used as reaction media. Ligands were either dried/purified or used as such. MoOCl4 was prepared in laboratory. Products obtained were coloured, may be due to reduction of Mo(VI) or ligandand#8594;Mo charge transitions. The products are moisture/air sensitive and insoluble in nonpolar solvents, but soluble in solvents of high polarity newline