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Axial ligands and (acido) (phthalocyaninato) lanthanides(III) stability on examples of erbium and lutetium

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Abstract

The results of a spectrophotometric study of the dissociation kinetics of the coordination centre in (phthalocyaninato) erbium(III) and lutetium(II), (X)LnPc (X = Cl, Br, AcO) in ethanol in the presence of acetic acid are reported. The kinetic equations, the numerical values of reaction rate constants and dependences of the letter on the temperature were determined by the method of excessive concentrations. The stoichiometric mechanism of the complexes dissociation and the nature of the limiting elementary reaction were substantiated and the role of axial ligands in the reaction mechanism was revealed using spectral data and the quasiequilibrium principle to describe kinetic regularities. The resulting data can help in the use of erbium and lutetium phthalocyanines as precursors in the synthesis of higher stoichiometry complexes.

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Correspondence to T. N. Lomova.

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Original Russian Text © T.N. Lomova, 2015, published in Zhurnal Obshchei Khimii, 2015, Vol. 85, No. 4, pp. 675–681.

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Lomova, T.N. Axial ligands and (acido) (phthalocyaninato) lanthanides(III) stability on examples of erbium and lutetium. Russ J Gen Chem 85, 915–921 (2015). https://doi.org/10.1134/S107036321504026X

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  • DOI: https://doi.org/10.1134/S107036321504026X

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