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Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, UK
E-mail: m.shipman@warwick.ac.uk
; Fax: +44 (0)2476 524112
; Tel: +44 (0)2476 523186
b
School of Chemistry, University of Birmingham, Edgbaston, Birmingham, UK
E-mail: j.tucker@bham.ac.uk
; Fax: +44 (0)121 414 4403
c
Institute for Frontier Materials, Deakin University, Waurn Ponds, Australia
E-mail: tiffany.walsh@deakin.edu.au
; Tel: +61 352 273 116
Chem. Commun., 2013,49, 2509-2511
DOI:
10.1039/C3CC36159D
Received
24 Aug 2012,
Accepted
12 Feb 2013
First published online
13 Feb 2013
A method for probing the strength of B–N dative bonds is reported. The activation parameters for nitrogen inversion in a series of azetidines tethered to boronate esters have been quantified by VT-NMR and the measured barriers correlated with data obtained by 11B NMR, X-ray crystallography and MP2 calculations.
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