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Determination of the bond-angle distribution in vitreous B2O3 by B-11 double rotation (DOR) NMR spectroscopy
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Hung, I., Howes, A. P., Parkinson, B. G., Anupõld, Tiit, Samoson, Ago, Brown, Steven P., Harrison, P. F., Holland, Diane and Dupree, Ray (2009) Determination of the bond-angle distribution in vitreous B2O3 by B-11 double rotation (DOR) NMR spectroscopy. Journal of Solid State Chemistry, Vol.182 (No.9). pp. 2402-2408. doi:10.1016/j.jssc.2009.06.025 ISSN 0022-4596.
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Official URL: http://dx.doi.org/10.1016/j.jssc.2009.06.025
Abstract
The B-O-B bond angle distributions for both ring and non-ring boron sites in vitreous B2O3 have been determined by B-11 double rotation (DOR) NMR and multiple-quantum (MQ) DOR NMR. The [B3O6] boroxol rings are observed to have a mean internal B-O-B angle of 120.0+/-0.7 degrees with a small standard deviation, sigma(R) = 3.2+/-0.4 degrees, indicating that the rings are near-perfect planar, hexagonal structures. The rings are linked predominantly by non-ring [BO3] units, which share oxygens with the boroxol ring, with a mean B-ring-O-Bnon-ring angle of 135.1+/-0.6 degrees and sigma(NR) = 6.7+/-0.4 degrees. In addition, the fraction of boron atoms, f, which reside in the boroxol rings has been measured for this sample as f = 0.73+/-0.01. (C) 2009 Elsevier Inc. All rights reserved.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Journal of Solid State Chemistry | ||||
Publisher: | Academic Press | ||||
ISSN: | 0022-4596 | ||||
Official Date: | September 2009 | ||||
Dates: |
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Volume: | Vol.182 | ||||
Number: | No.9 | ||||
Number of Pages: | 7 | ||||
Page Range: | pp. 2402-2408 | ||||
DOI: | 10.1016/j.jssc.2009.06.025 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Funder: | Leverhulme Trust (LT), Engineering and Physical Sciences Research Council (EPSRC), Biotechnology and Biological Sciences Research Council (Great Britain) (BBSRC), University of Warwick |
Data sourced from Thomson Reuters' Web of Knowledge
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