Abstract: A convenient preparation of K[ArBF3] (Ar= 2-C6H4F, 3-C6H4F, 4-C6H4F, 2,6-C6H3F2, 3,5-C6H3F2, 2,4,6-C6H2F3, 3,4,5-C6H2F3, 2,3,4,5-C6HF4 and C6F5) is offered and the IR and multinuclear NMR spectra of these salts are reported. Treatment of the trifluoroborate salts with BF3 in chlorocarbon solvents provides an easy synthetic route to the corresponding aryldifluoroboranes ArBF2. The multinuclear NMR spectra of ArBF2 are presented. The electron substituent effect of the [-BF3](-)-group shows this substituent as one of the strongest sigma-electron donors, while its pi-electron influence is negligible (sigma(I) = - 0.32, sigma(R) = - 0.07). (C) 2000 Elsevier Science S.A. All rights reserved.

Cite: Frohn H. , Franke H. , Fritzen P. , Bardin V.
(Fluoroorgano)fluoroboranes and -fluoroborates I: synthesis and spectroscopic characterization of potassium fluoroaryltrifluoroborates and fluoroaryldifluoroboranes
Journal of Organometallic Chemistry. 2000. V.598. N1. P.127-135. DOI: 10.1016/S0022-328X(99)00690-7 WOS Scopus РИНЦ

Dates:

Published print:

Mar 1, 2000

Identifiers:

Web of science	WOS:000085914200017
Scopus	2-s2.0-0000135772
Elibrary	13343083
OpenAlex	W2085131087

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