Syntheses, Structures, and Properties of 3,3′-Dimethoxy-2,2′-[(1,3-propylene)dioxybis(nitrilomethylidyne)]diphenol and Its Ni(II) Cluster
作者:Wen-kui Dong、Li Li、Yin-Xia Sun、Jun-Feng Tong、Jian-chao Wu
DOI:10.1080/15533174.2011.615780
日期:2012.5.1
A new Salen-type bisoxime chelating ligand, 3,3'-dimethoxy-2,2'-[(1,3-propylene)dioxybis(nitrilomethylidyne)]diphenol (H2L), and its Ni(II) cluster, [NiL(CH3CH2OH)}(2)(OAc)(2)Ni]center dot 2CH(3)CH(2) OH center dot CH3COCH3, have been synthesized and characterized by elemental analyses, FT-IR spectra, UV-vis spectra, H-1-NMR, molar conductance measurements, and thermal properties. X-ray crystallographic analyses reveal that the structure of the Ni(II) cluster is as follows: two acetate groups coordinating to three metal(II) ions through Ni-O-C-O-Ni bridges and four mu-phenoxo oxygen atoms from two [NiL(CH3CH2OH)] units also coordinating to metal(II) ions. In the cluster, two ethanol molecules coordinate to the two terminal nickel(II) ions and form a trinuclear structure. Meanwhile, the Ni-O-C-O-Ni and mu-phenoxo bridges play important roles in assembling metal ions and ligands.