Abstract
New iminium derivatives of the sulfonio-closo-decaborate anion have been obtained in the form of tetrabutylammonium salts (Bu4N)[2-B10H9SC(NH2)R] (R = –CH3, –CH2CH3, –CH(CH3)2, –Ph, –PhCH3), in which the iminium group acts as a protective group and allows further modification of the boron cluster anion without acting the sulfonium group. The compounds have been studied by elemental analysis, IR and 11B, 1H, 13C NMR spectroscopies. The structure of compounds (Bu4N)[2-B10H9SC(NH2)CH3] and (Bu4N)[2-B10H9SC(NH2)Ph] has been confirmed by X-ray diffraction analysis. The yield of final compounds is >80%.
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ACKNOWLEDGMENTS
Analytical studies (measurements of NMR spectra, X‑ray diffraction studies) were carried out at the Center for Collective Use of Physical Research Methods at the Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences.
Funding
The work was supported by the Russian Science Foundation (grant no. 23-73-00082).
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Translated by V. Avdeeva
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Golubev, A.V., Kubasov, A.S., Lukoshkova, A.A. et al. Synthesis of New Iminium Derivatives of Sulphonio-сloso-Decaborate Anion (Bu4N)[2-B10H9SC(NH2)R] (R = –CH3, –CH2CH3, –CH(CH3)2, –Ph, –PhCH3). Russ. J. Inorg. Chem. 68, 1752–1760 (2023). https://doi.org/10.1134/S0036023623602350
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DOI: https://doi.org/10.1134/S0036023623602350