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Further Consideration of the 29Si Nuclear Magnetic Resonance Spectrum of Kaolinite

Published online by Cambridge University Press:  02 April 2024

J. G. Thompson  and
P. F. Barron
J. G. Thompson
Affiliation:
Research School of Chemistry, Australian National University, GPO Box 4, Canberra, ACT 2601, Australia
P. F. Barron
Affiliation:
Brisbane NMR Centre, School of Science, Griffith University, Nathan, Queensland 4111, Australia
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Abstract

The introduction of artificial ±b/3 stacking faults into well-crystallized kaolinite by intercalating and removing hydrazine had no observable effect on the solid-state 29Si nuclear magnetic resonance spectrum of kaolinite. Also, the introduction of such stacking faults did not alter the hydroxyl-stretching region of the infrared spectrum, implying no change in the hydrogen bonding between the displaced layers. Calculations of Si...H distances and Si-O...H angles from reported structures for kaolinite indicated that the resolution of the two Si chemical environments was due to differences in hydrogen-bonding at the surface of the silicate sheet.

Keywords

HydrazineHydrogen bondKaoliniteNuclear magnetic resonanceStacking fault
Type
Research Article
Information
Clays and Clay Minerals , Volume 35 , Issue 1 , February 1987 , pp. 38 - 42
Copyright
Copyright © 1987, The Clay Minerals Society

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