Issue 28, 2012

Bis(tetrafluorophenyl)borane

Abstract

The reaction of the Grignard reagent (p-C6F4H)MgBr with Me2SnCl2 afforded the p-C6F4H transfer reagent Me2Sn(p-C6F4H)2 (1). Subsequent reaction of 1 with BCl3 led to the chloroborane (p-C6F4H)2BCl (2), which was converted to the borane [(p-C6F4H)2BH]2 (3) by treatment with the hydride source Me2SiHCl. By reaction of tetrafluoropyridine with i-PrMgCl followed by the in situ reaction with Me2SnCl2, the stannane Me2Sn(C5F4N)2 (4) could be obtained. However, this did not react with BCl3. The resulting products were characterized by elemental analyses and NMR spectroscopy. Single crystal X-ray diffraction experiments were performed for compounds 1, 2 and 4. The crystal structure of the literature known compound Me2Sn(C6F5)2 (5) was determined and compared with structures of 1 and 4.

Graphical abstract: Bis(tetrafluorophenyl)borane

Supplementary files

Article information

Article type
Paper
Submitted
27 Apr 2012
Accepted
10 May 2012
First published
10 May 2012

Dalton Trans., 2012,41, 8609-8614

Bis(tetrafluorophenyl)borane

D. Winkelhaus, B. Neumann, H. Stammler and N. W. Mitzel, Dalton Trans., 2012, 41, 8609 DOI: 10.1039/C2DT30924F

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