UNSPECIFIED (1999) The Ge-O-Ge bond angle distribution in GeO2 glass: a NMR determination. JOURNAL OF NON-CRYSTALLINE SOLIDS, 246 (3). pp. 159-168. ISSN 0022-3093

Full text not available from this repository.

Abstract

O-17 MAS and static NMR spectra, from amorphous germania and quartz-like GeO2, have been used to estimate the range of O-17 quadrupolar parameters in the glass for different assumed bond angle distributions. The spectra from the quartz-like polymorph of GeO2 were used to provide reference data for oxygen connected to four-fold coordinated germanium. Nuclear quadrupole coupling constants, (C-Q = e(2)qQ/h), asymmetry parameters, (eta), and isotropic chemical shifts, (delta(i)), were obtained from simulations, of glass spectra obtained at different fields, in which a range of quadrupolar parameters were employed, according to various postulated bond angle distributions. Our results show that the Ge-(O) over cap-Ge angle distribution in amorphous germania is consistent with a Gaussian distribution with most probable angle of 130 +/- 1 degrees and sigma close to 4 degrees - smaller than hitherto reported for GeO2. (C) 1999 Elsevier Science B.V. All rights reserved.

Item Type:	Journal Article
Subjects:	T Technology > TP Chemical technology T Technology > TA Engineering (General). Civil engineering (General)
Journal or Publication Title:	JOURNAL OF NON-CRYSTALLINE SOLIDS
Publisher:	ELSEVIER SCIENCE BV
ISSN:	0022-3093
Date:	1 May 1999
Volume:	246
Number:	3
Number of Pages:	10
Page Range:	pp. 159-168
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/14575

Data sourced from Thomson Reuters' Web of Knowledge

Request changes to a record

Actions (login required)

View Item