A dinuclear nickel(II) complex derived from an asymmetric Salamo-type N2O2 chelate ligand: synthesis, structure and optical properties
Author:
Dong Xiu-Yan1, Kang Quan-Peng1, Jin Bo-Xian1, Dong Wen-Kui1
Affiliation:
1. School of Chemical and Biological Engineering , Lanzhou Jiaotong University, Lanzhou, Gansu 730070 , P.R. China
Abstract
Abstract
A new dinuclear Ni(II) complex, [{Ni(L)(C5H5N)}2], has been synthesized with 4-chloro-4′,6′-dibromo-2,2′-[ethylenedioxybis(nitrilomethylidyne)]diphenol (H2L), and characterized by elemental analyses, FT-IR, UV/Vis, molar conductance and X-ray crystallographic analysis. Each Ni(II) atom is located at a N2O2 coordination site of a completely deprotonated (L)2− unit. Two μ-phenoxo oxygen atoms from two [Ni(L)] units and two pyridine nitrogen atoms coordinate with two Ni(II) atoms. The two hexa-coordinated Ni(II) atoms have slightly distorted octahedral geometries. The μ-phenoxo bridges play important roles in assembling Ni2+ and (L)2− units. This 2:2 (Ni2+:(L)2−) structure is different from that of other Salamo-type Ni(II) complexes reported earlier.
Publisher
Walter de Gruyter GmbH
Subject
General Chemistry
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