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Issue 43, 2019
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The pentafluoroethyltrihydridoborate anion: from shock sensitive salts to stable room temperature ionic liquids

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Abstract

The reaction of pentafluoroethyllithium with BH3·thf yields [C2F5BH3] that is stable against H2O, OH and air due to the electron withdrawing C2F5 group. M[C2F5BH3] (M = K, Cs) are shock sensitive solids whereas salts with organic cations such as the room temperature ionic liquid [EMIm][C2F5BH3] are stable for years. [C2F5BH3] is a mild reducing agent, which is also reflected by its electrochemical properties. Oxidation with I2 or Br2 in the presence of Lewis bases yields the first stable adducts C2F5BH2·L.

Graphical abstract: The pentafluoroethyltrihydridoborate anion: from shock sensitive salts to stable room temperature ionic liquids

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Publication details

The article was received on 15 Apr 2019, accepted on 30 Apr 2019 and first published on 01 May 2019


Article type: Communication
DOI: 10.1039/C9CC02935D
Chem. Commun., 2019,55, 6110-6113

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    The pentafluoroethyltrihydridoborate anion: from shock sensitive salts to stable room temperature ionic liquids

    P. T. Hennig, J. A. P. Sprenger, L. N. Schneider, N. V. Ignat’ev and M. Finze, Chem. Commun., 2019, 55, 6110
    DOI: 10.1039/C9CC02935D

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