Synthesis and characterization of molybdenum complexes with salicylideneimine-2-anisole and certain heterocyclic nitrogen ligands

Abstract

Reactions of Mo(CO)6 with salicylideneimine-2-anisole (Schiff-base, salanH), in the presence of certain heterocyclic nitrogen compounds in THF produced different complexes depending on the reaction conditions. In air, three dinuclear complexes [O2(salanH)Mo(μ-O)2MoO2L] were isolated, L = 2,2′-bipyridine (bpy) or 1,10-phenanthroline (phen) or 2,9-dimethy1-4,7-diphenyl-phenanthroline (dim). Under reduced pressure, the corresponding reactions resulted in the formation of the tetracarbonyl derivatives, [Mo(CO)4(salanH)](L). The complexes were characterized by elemental analyses, spectroscopic and magnetic studies. The thermal properties of the complexes were investigated using thermogravimetry. © 2007 Taylor & Francis.