Abstract
Abstract Novel mixed-ligand cyanonitrosyl complexes of molybdenum(0), obtained from the interaction of tetracyanodi-nltrosylmolybdate(0) anion, [Mo (N0)2 (CN4]2-, 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}6 electron configuration1 in these complexes.
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