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A MAS NMR Investigation of lead phosphosilicate glasses: the nature of the highly deshielded six-coordinated silicon

Prabakar, S and Rao, KJ and Rao, CNR (1991) A MAS NMR Investigation of lead phosphosilicate glasses: the nature of the highly deshielded six-coordinated silicon. In: Materials Research Bulletin, 26 (4). pp. 285-294.

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Official URL: http://dx.doi.org/10.1016/0025-5408(91)90023-F

Abstract

$^2^9Si$ and $^3^1P$ NMR spectra have been studied in a series of lead phosphosilicate glasses, It is found that as the $P_2O5$ content increases, the signal due to the six-coordinated silicon at - 212 ppm grows in intensity. Based on partial charge arguments it is suggested that the six-coordinated silicon atoms are surrounded by only phosphorus as second neighbours and are highly desheilded.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: silican;lead;phosphosilicates;oxides;glasses
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 27 Jun 2007
Last Modified: 17 Jan 2012 05:59
URI: http://eprints.iisc.ernet.in/id/eprint/11276

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