✦ LIBER ✦

1H,29Si and 1H,23Na heteronuclear shift correlation in octosilicate via cross-polarisation

✍ Scribed by Graham G. Almond; Robin K. Harris; Kevin R. Franklin

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 516 KB
Volume: 6
Category: Article
ISSN: 0926-2040
DOI: 10.1016/0926-2040(95)01202-8

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✦ Synopsis

Solid-state magic-angle spinning was used to study octosilicate, a layered sodium polysilicate hydrate. Conventional one-dimensional NMR spectra detect two distinct proton and silicon sites and a single sodium species. Heteronuclear shift correlation experiments have shown that only one type of proton is involved in efficient cross-polarisation to all the silicon and sodium sites. Such selectivity could be caused by a favourable position for, and suitable rigidity of, this strongly hydrogen-bonded proton. The latter requirement can be used to propose a simple model of the interlayer space in octosilicate.

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