Synthesis and Structural Investigation of Some Mixed-Ligand Cyanonitrosyl {Mo(NO)2}6Complexes of Molybdenum with some 2 or 3-Pyrazoline-5-one Derivatives

摘要

Novel mixed-ligand cyanonitrosyl complexes of molybdenum(0), obtained from the interaction of tetracyanodi-nltrosylmolybdate(0) anion, Mo (N0)2(CN42-, with 3-methyl-2-pyrazoline-5-one, 3-methyl-l-phenyl-2-pyrazoline-5-one, 2, 3-dimethyl-l-phenyl-3-pyrazoline-5-one, 2, 3-dimethyl-l-(4-methyl-phenyl)-3-pyrazoline-5-one, 4-amino-2, 3-dimethyl-l-phenyl-3-pyrazoline-5-one, 4-dimethylamino-2, 3-dimethyl-l-phenyl-3-pyrazoline-5-one are described. The products, which have been characterized by elemental analyses, molar conductances, magnetic measurements and infra-red spectral studies, have the general formula Mo(NO)2(CN)2(L)2. 2H2o (where L - 2 or 3-pyrazoline-5-one derivatives mentioned above). An octahedral structure is suggested for the complexes. Molybdenum(0) has a low spin {Mo(NO)2}6electron configuration1in these complexes.