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Abstract
A new series of hepta-coordinated mixed-ligand cyanonitrosyl complexes of vanadium (having {VNO}4 electron configuration1), formed by the interaction of potassium hexa-cyanonitrosylvanadate(I) monohydrate with some heterocyclic organic bases like 2, 3-, 2, 4-, 2, 6- and 3, 5- lutidines, 2, 3, 6- and 2, 4, 6- collidines and nicotine in aqueous methanol has been isolated in the solid state. The products, which have been characterized by elemental analyses, molar conductances, magnetic measurements, and infrared spectral studies, have the general formula K2[VNO(CN)4(L)2] for which a pentagonal bipyramidal structure have been suggested. Vanadium has a low-spin d4-configuration in all the complexes.