First dicadmium(II)complex of tripodal amide ligand with one edge-sharing monocapped octahedral geometry

摘要

A new dicadmium(II)complex[Cd2(L)2(H2O)2](NO3)4·8H2O(1)with the tripodal amide ligand L(tris[3-aza-2-oxo-4-(2-pyr-idyl)butyl]amine)was synthesized and structurally characterized.Complex 1 is revealed as a dinuclear 2:2(Cd:L)complex,in which each cadmium(II)ion is hepta-coordinated with the coordination surrounding of distorted monocapped octahedral geometry.Two cad-mium(II)ions are dibridged by two carbonyl mu-O atoms forming a Cd2(mu-O)2 parallelogram-type moiety.Interestingly,the dinuclear coordination sphere can be seen as resulting from the fusion of two distorted monocapped octahedral[Cd(L)(H2O)f+units through sharing one edge originated from the two carbonyl mu-O atoms as a first example.Comparative NMR,IR and FAB-mass data of 1 are also discussed.