期刊
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷 77, 期 4, 页码 795-801出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2010.08.006
关键词
Homopolymer sulphadrug; Supramolecular polymer complexes; Spectral studies
类别
Novel polymer complexes of copper(II), palladium(II), platinum(II) and cadmium(II) containing homopolymer[4-acrylamido benzene sulphonyl guanidine; (HL)] and various anions (SO42-, CH3COO-, NO3-, Br- or Cl-) have been designed and carried out. Their structures were investigated by elemental analyses, spectral (IR. UV-vis, H-1 NMR and ESR) and magnetic moments. The modes of interactions between the ligand and the metals were discussed, where oxygen (of O=S=O group) and nitrogen atom [of imino nitrogen (NH/N) of the guanidine group] are involved in chelation. The homopolymer shows two types of coordination behaviour. In mononuclear polymer complexes 4 and 6-10, it acts as a neutral bidentate ligand chelated through the NH and O atoms, whereas in the polymer complexes 1-3, 5 and 11, monobasic bidentate ligand is coordinated through the -N and -O atoms. The poly-chelates are of 1:1/1:2 (metal-homopolymer) stoichiometry and exhibit four coordination. On the basis of electronic spectral data and magnetic susceptibility measurement square planar geometry has been proposed. The ESR spectral data provided information about their structure on the basis Hamiltonian parameters and degree of covalency. From the electron paramagnetic resonance and spectral data, the orbital reduction factors were calculated. (C) 2010 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据