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A Simple and Convenient Route to Arylxenon(II) Tetrafluoroborates

  • H.-J. Frohn EMAIL logo , H. Franke and V. V. Bardin
Published/Copyright: June 2, 2014
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An improved synthesis of arylxenon(II) salts is reported. The series of fluoro-containing arylxenon(II) tetrafluoroborates (aryl = C6F5, 2,3,4,5-C6HF4, 3,4,5-C6H2F3 and 3,5-C6H3F2) are prepared by the reaction of xenon difluoride with the corresponding aryldifluoroboranes. The salts [C6F5Xe] [BF4] and [2,3,4,5-C6HF4Xe] [BF4] are long-term stable in anhydrous HF (aHF) solution at rt, while [3,4,5-C6H2F3Xe] [BF4] and [3,5-C6H3F2Xe] [BF4] are converted into 1,2,3,5-tetrafluorobenzene and 1,3,5-trifluorobenzene, respectively, within a few hours.

Received: 1999-10-4
Published Online: 2014-6-2
Published in Print: 1999-12-1

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