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Molecular Structure of N-Methylbis (2-Hydroxyethyl)Ammonium hexafluorosilicate at 100 and 298 K

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Abstract

Two polymorphic modifications of N-methylbis(2-hydroxyethyl)ammonium hexafluorosilicate (AHFS) crystallize in monoclinic symmetry. The independent part of the unit cell of the low temperature modification contains two cations and an anion. The cell volume is two times smaller in the high temperature modification, the [SiF6]2- anion being disordered. In both modifications of methylbis(2-hydroxyethyl)ammonium hexafluorosilicate (HOCH2CH2)2HN+[SiF6]2-, the [SiF6]2- anion and the (HOCH2CH2)2HN+CH3 cation are linked by F…H—O hydrogen bonds. The silicon atom polyhedron in the anion is a tetragonal bipyramid; the coordination polyhedron of the nitrogen atom in the cation is a tetrahedron.

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Authors and Affiliations

  1. A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Division, Russian Academy of Sciences, Moscow, Russia

    M. G. Voronkov & V. S. Fundamenskii

  2. A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia

    A. A. Korlyukov & M. Yu. Antipin

  3. East Siberian State Academy of Education, Irkutsk, Russia

    É.A. Zels’bst

Authors
  1. M. G. Voronkov
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  2. A. A. Korlyukov
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  3. V. S. Fundamenskii
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  4. É.A. Zels’bst
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  5. M. Yu. Antipin
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Correspondence to É.A. Zels’bst.

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Original Russian Text Copyright © 2010 by M. G. Voronkov, A. A. Korlyukov, V. S. Fundamenskii, É. A. Zels’bst, and M. Yu. Antipin

Translated from Zhurnal Strukturnoi Khimii, Vol. 51, No. 3, pp. 552–557, May-June, 2010. Original article submitted May 22, 2009; revised August 14, 2009.

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Voronkov, M.G., Korlyukov, A.A., Fundamenskii, V.S. et al. Molecular Structure of N-Methylbis (2-Hydroxyethyl)Ammonium hexafluorosilicate at 100 and 298 K. J Struct Chem 51, 534–539 (2010). https://doi.org/10.1007/s10947-010-0077-0

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  • DOI: https://doi.org/10.1007/s10947-010-0077-0

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