Study of complexation between Cu2+ ions and ortho-azidobenzoic acid |
| |
Authors: | A. V. Budruev L. N. Karyakina O. P. Levina A. V. Oleinik |
| |
Affiliation: | (1) Lobachevsky State University, Nizhni Novgorod, Russia |
| |
Abstract: | An aqua complex of copper(II) o-azidobenzoate, [Cu(OH)ABA 2H2O]2 (ABA is o-azidobenzoic acid), was synthesized in an aqueous solution and identified by IR and electronic absorption spectroscopy. In the complex, the azido group is not coordinated by Cu2+. When dissolved in dry organic solvents (DMF, DMSO, dioxane, and methanol), the complex undergoes dehydration to give a chelate complex (CC) containing the Cu2+-coordinated azido group as a result of the electron density redistribution at its N atoms. The IR spectrum of the chelate complex contains no absorption band at 2135 cm–1 corresponding to the stretching vibrations of the azido group. The resulting CC is unstable in solutions and spontaneously decomposes with a release of molecular nitrogen. The interaction of a Cu2+ ion with o-azidobenzoic acid in dry organic solvents affords a CC similar to the complex obtained on the dissolution of [Cu(OH)ABA 2H2O]2 in dry solvents.Translated from Koordinatsionnaya Khimiya, Vol. 31, No. 3, 2005, pp. 195–198.Original Russian Text Copyright © 2005 by Budruev, Karyakina, Levina, Oleinik.This revised version was published online in April 2005 with a corrected cover date.This revised version was published online in April 2005 with a corrected cover date. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|