Synthesis, characterization, and conductance of benzimidazolylpolyacrylate Cu(II), Co(II), and Fe(II) complexes

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作者
Uma, M. [1 ]
Prabhakar, L.D. [1 ]
Palanivelu, C.B. [1 ]
Thanikachalam, V. [1 ]
机构
[1] Department of Chemistry, Annamalai University, Annamalainagar, 608002, Tamil Nadu, India
关键词
Characterization - Electric conductivity - Microstructure - Paramagnetic resonance - Spectroscopic analysis - Synthesis (chemical);
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摘要
The present study examines the coordinating behavior of the benzimidazole nucleus, which is on the polytrichlorophenylacrylate backbone, towards metal ion. Transition metal ions (Cu2+, Co2+, and Fe2+) have been attached through coordinate bondsto a functionalized polymer backbone. The almost planar cupric ion is in the center with the nitrogen, carbonyl oxygen, and sulfate groups coordinated. Polymer synthesis was confirmed through 1H-13C-CP/MAS NMR spectra. From magnetic studies, all the complexes are paramagnetic. Doping of copper results in a small increase in electrical conductance. Microphotographs of metallated polymer have been compared to those of nonmetallated polymer. The copper complex is square planar while the cobalt complex is tetrahedral. Possible structures are assigned for the two complexes.
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