Abstract
The extraction of tetrafluoroboric acid from aqueous solutions to a solution of benzo-15-crown-5 (B15С5, 1 mol L-1) in chloroform is shown to occur due to complexation with the ratio of components HBF4: B15С5 = 1: 1.5. It was revealed by IR spectroscopy that the whole crown ether in the extract is coordinated. The 1: 1 HBF4•В15С5 complex was isolated and characterized using IR spectroscopy and X-ray diffraction analysis. The O(2) and O(4) atoms of the crown ether ring participate in the coordination.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 12, pp. 2191–2194, December, 2018.
Based on the materials of the VII International Conference on Physical Chemistry of Crown Compounds, Porphyrins, and Phthalocyanines (September 9–14, 2018, Tuapse, Russia).
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Zhilov, V.I., Kostikova, G.V., Kuz´mina, L.G. et al. Complexation of tetrafluoroboric acid with benzo-15-crown-5. Russ Chem Bull 67, 2191–2194 (2018). https://doi.org/10.1007/s11172-018-2354-6
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DOI: https://doi.org/10.1007/s11172-018-2354-6