STRUCTURE OF A NEW TRINUCLEAR NICKEL(II) COMPLEX WITH A SALEN-TYPE BISOXIME LIGAND
W.-K. Dong1, Y.-X. Sun1, J. Yao1, L. Wang1, X.-Y. Dong1, X.-H. Gao2
1School of Chemical and Biological Engineering, Lanzhou Jiaotong University, P. R. China
dongwk@126.com
2Lanzhou Petrochemical Research Center, PetroChina, P. R. China
Keywords: salen-type bisoxime ligand, Ni(II) complex, synthesis, crystal structure
Abstract
A new trinuclear Ni(II) complex {[NiL(DMF)]2(OAc)2Ni}×2DMF (H2L = 4,4'-dichloro-2,2'-[(1,3-propylene)dioxybis(nitrilomethylidyne)]diphenol) is synthesized and characterized by elemental analyses, IR spectra, UV—Vis spectra and X-ray crystallography. The results show that the Ni(II) complex consists of three Ni(II) ions, two tetradentate (μ-L)2– units, two coordinated μ-acetate ions, two coordinated DMF molecules, and two crystallization DMF molecules. All hexacoordinated Ni(II) ions of the complex have a slightly distorted octahedral geometry. The crystal packing of the Ni(II) complex reveals a notable feature of this structure: the formation of an infinite supramolecular 2D layered structure by virtue of intermolecular C—H⋯O hydrogen bonding.
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