Abstract
On the basis of quantum-chemical calculations, it is demonstrated that, for isolated sulfophthalexon molecules, the heterocyclic form is thermodynamically more stable than the open zwitterionic form. On the contrary, the latter is predominant in aqueous solutions.
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Translated from Zhurnal Analiticheskoi Khimii, Vol. 60, No. 5, 2005, pp. 455–457.
Original Russian Text Copyright © 2005 by Pankratov, Mustafin.
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Pankratov, A.N., Mustafin, A.I. Structure of Sulfophthalexons, Chelating Analytical Reagents. J Anal Chem 60, 397–399 (2005). https://doi.org/10.1007/s10809-005-0107-9
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DOI: https://doi.org/10.1007/s10809-005-0107-9