Abstract
Solutions of tetraethylammonium phthalate in non-aqueous solvents (ethanol, dimethylsulfoxide, dimethylformamide, and acetonitrile) were studied by electronic absorption spectroscopy. It was shown that the phthalate anion dimerizes in acetonitrile and dimethylformamide solutions due to π-stacking, the experimental equilibrium constants being 550±50 and 900±50, respectively. Dimerization of the phthalate anion was not observed in ethanol and dimethylsulfoxide solutions.
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ACKNOWLEDGMENTS
The research was carried out using the equipment of the resource centers of the St. Petersburg State University Science Park (“Interdisciplinary Resource Centre for Nanotechnology”, “Centre for Optical and Laser Materials Research”, “Thermogravimetric and Calorimetric Research Centre”, “Cryogenic Department”, “Chemical Analysis and Materials Research Centre”, “Centre for X-ray Diffraction Studies”, “SPbU Computing Centre”, and “Magnetic Resonance Research Centre”).
Funding
The work was supported by the Russian Foundation for Basic Research (project no. 20-33-70025).
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Translated from Zhurnal Obshchei Khimii, 2021, Vol. 91, No. 5, pp. 659–664 https://doi.org/10.31857/S0044460X21050012.
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Nosov, V.G., Podryadrova, K.A., Vasilyeva, M.S. et al. Dimerization of Phthalate Ion in Non-Aqueous Solvents. Russ J Gen Chem 91, 753–757 (2021). https://doi.org/10.1134/S1070363221050017
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DOI: https://doi.org/10.1134/S1070363221050017