Abstract
The paper presents the results of a study of the kinetics of coordination of a macroheterocyclic compound with an increased coordination cavity of the (3 + 3) McH3 composition consisting of sequentially alternating 1,3,4-thiadiazole and 3,4-bis(4-tert-butylphenyl)pyrrole fragments to dehydrated Cu(OAc)2 in dimethylformamide with and without H2O admixtures. The reaction could be controlled spectrophotometrically over the salt and ligand concentration ranges (0.175−0.55) × 10−4 and (0.16−0.64) × 10−5 mol/l, respectively, at temperatures of 288–303 K. A kinetic equation of an unusual form with a negative order with respect to the salt was for the first time obtained experimentally for a macrocyclic ligand by the method of excess concentrations. The kinetics of the complex formation reaction was given a theoretical interpretation. Quantitative characteristics were obtained, and the role played by water in the kinetics of complex formation was studied. These data were of importance for practical applications, for the development of optimum conditions increasing the yield of complexes when they were synthesized in complex formation reactions.
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Original Russian Text © T.N. Lomova, E.G. Mozhzhukhina, E.A. Danilova, M.K. Islyaikin, 2009, published in Zhurnal Fizicheskoi Khimii, 2009, Vol. 83, No. 10, pp. 1877–1883.
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Lomova, T.N., Mozhzhukhina, E.G., Danilova, E.A. et al. The kinetics of complex formation in the trithiadiazoletri[3,4-di(4-tert-butylphenyl)-pyrrole] macrocycle-copper(II) acetate-DMFA-H2O system. Russ. J. Phys. Chem. 83, 1694–1700 (2009). https://doi.org/10.1134/S0036024409100112
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DOI: https://doi.org/10.1134/S0036024409100112