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Lewis acidity of tris(pentafluorophenyl) borane: crystal and molecular structure of B(C6F5)(3).OPEt3

Lewis acidity of tris(pentafluorophenyl) borane: crystal and molecular structure of B(C6F5)(3).OPEt3
Lewis acidity of tris(pentafluorophenyl) borane: crystal and molecular structure of B(C6F5)(3).OPEt3
The synthesis and characterisation (TP, multielement NMR spectroscopy) of B(C6F5)(3). L {L = CH3CO . OEt (1), Et3PO (2)} are described together with a single-crystal X-ray diffraction study of 2. The latter reveals an angular B-O-P linkage {161.04(16)degrees} with BO and PO bondlengths of 1.533(3) and 1.4973(17) Angstrom, respectively. Lappert's ?v(CO) and Gutmann's acceptor number (AN) methods have been applied to 1 and 2 to assess the relative Lewis acidity of B(C6F5)(3) which is confirmed as weaker than BF3. A strong linear correlation has been obtained for Gutmann's AN and Childs' H-1 NMR Lewis acidity scales.
acceptor number, borane, lewis acidity, x-ray structure, organophosphine oxideadducts, complexes, phosphine, esters, oxygen
530-533
Beckett, M. A.
42da77d2-c5b1-4050-8e68-42c0cccb82fb
Brassington, D. S.
42256c93-6554-487e-a6f5-dd1cb4fab9ba
Coles, S. J.
503a9d9c-0380-4fcd-ad31-cd329255c08e
Hursthouse, M. B.
276e7125-0773-43f6-97e3-77106e9b6e8f
Beckett, M. A.
42da77d2-c5b1-4050-8e68-42c0cccb82fb
Brassington, D. S.
42256c93-6554-487e-a6f5-dd1cb4fab9ba
Coles, S. J.
503a9d9c-0380-4fcd-ad31-cd329255c08e
Hursthouse, M. B.
276e7125-0773-43f6-97e3-77106e9b6e8f

Beckett, M. A., Brassington, D. S., Coles, S. J. and Hursthouse, M. B. (2000) Lewis acidity of tris(pentafluorophenyl) borane: crystal and molecular structure of B(C6F5)(3).OPEt3. Inorganic Chemistry Communications, 3 (10), 530-533. (doi:10.1016/S1387-7003(00)00129-5).

Record type: Article

Abstract

The synthesis and characterisation (TP, multielement NMR spectroscopy) of B(C6F5)(3). L {L = CH3CO . OEt (1), Et3PO (2)} are described together with a single-crystal X-ray diffraction study of 2. The latter reveals an angular B-O-P linkage {161.04(16)degrees} with BO and PO bondlengths of 1.533(3) and 1.4973(17) Angstrom, respectively. Lappert's ?v(CO) and Gutmann's acceptor number (AN) methods have been applied to 1 and 2 to assess the relative Lewis acidity of B(C6F5)(3) which is confirmed as weaker than BF3. A strong linear correlation has been obtained for Gutmann's AN and Childs' H-1 NMR Lewis acidity scales.

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More information

Published date: 1 October 2000
Keywords: acceptor number, borane, lewis acidity, x-ray structure, organophosphine oxideadducts, complexes, phosphine, esters, oxygen

Identifiers

Local EPrints ID: 18985
URI: http://eprints.soton.ac.uk/id/eprint/18985
PURE UUID: 0b636576-f8e3-4835-8dc6-4867559c3ff7

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Date deposited: 18 Jan 2006
Last modified: 15 Jul 2019 19:28

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