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Original Articles

Synthesis and Physicochemical Studies of Some Mn(II), Co(II) and Ni(II) Substituted Benzoates

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Pages 941-953 | Received 17 Dec 1991, Accepted 08 Apr 1992, Published online: 23 Sep 2006
 

Abstract

Complexes of Mn(II), Co(II), and Ni(II) with 3,5-dinitrobenzoic (3,5-DNB), 3,5-dimethylbenzoic (3,5-DMB) and 2,4,6-trimethylbenzoic (2,4,6-TMB) acids have been synthesized and characterised by microanalysis, conductance, room temperature magnetic susceptibility, infrared, and electronic reflectance spectral measurements. The infrared spectra data indicate a bidentate coordination of the carboxylate ions to the metal while the electronic spectra show that the Co(II) and Ni(II) complexes are octahedral while the Mn(II) complexes are either tetrahedral or octahedral. The magnetic measurements suggest the presence of some metal-metal interactions. The complexes are non-electrolytes.

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