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MAS NMR studies of ternary silicate glasses

Prabakar, S and Rao, KJ (1991) MAS NMR studies of ternary silicate glasses. In: Philosophical Magazine B, 64 (4). pp. 401-411.

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Official URL: http://www.tandfonline.com/doi/abs/10.1080/1364281...

Abstract

A series of silicate glasses based on $PbO-B_2O_3-SiO_2, PbO-Al_2O_3-SiO_2, Bi_2O_3-Al_2O_3-SiO_2$ and $PbO-PbF_2-SiO_2$ have been studied using solid-state magic-angle-spinning (MAS) NMR of $^{29}Si, ^{27}A1$ and $^{11}B$ nuclei. Al is found to be always four-coordinated in all these glasses. Si is present mostly as $Q_2$ or $Q_3$. Four-coordinated boron dominates the $^{11}B$ spectra. Calculated partial charges on Al, Si and B have been used to provide a rationale for the observed spectral features.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to John Wiley and Sons.
Keywords: glass;nuclear magnetic resonance
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 22 Aug 2007
Last Modified: 09 Jan 2012 09:10
URI: http://eprints.iisc.ernet.in/id/eprint/10665

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