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Two-dimensional MAS NMR correlation protocols involving double-quantum filtering of quadrupolar spin-pairs
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för material- och miljökemi (MMK), Avdelningen för fysikalisk kemi.
2010 (engelsk)Inngår i: Journal of magnetic resonance, ISSN 1090-7807, E-ISSN 1096-0856, Vol. 204, nr 1, s. 99-110Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Three two-dimensional (2D) NMR homonuclear correlation techniques invoking double-quantum (2Q) filtration of the central transitions of half-integer spins are evaluated numerically and experimentally. They correlate directly detected single-quantum (1Q) coherences in the t(2) domain with either of 1Q, two-spin 2Q or single-spin multiple-quantum coherence-evolutions in the indirect (t(1)) dimension. We employ experimental Na-23 and Al-22 NMR on sodium sulfite and the natural mineral sillimanite (SiAl2O5), in conjunction with simulated 2D spectra from pairs of dipolar-recoupled spins-3/2 and 5/2 at different external magnetic fields, to compare the correlation strategies from the viewpoints of 2D spectral resolution, signal sensitivity, implementational aspects and their relative merits for establishing internuclear proximities and quadrupolar tensor orientations.

sted, utgiver, år, opplag, sider
2010. Vol. 204, nr 1, s. 99-110
Emneord [en]
Dipolar recoupling, Double-quantum coherence, Homonuclear correlation spectroscopy, Multiple-quantum filtration, Internuclear proximities, Quadrupolar tensor orientations, Half-integer spin quadrupolar nuclei, Sillimanite
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Identifikatorer
URN: urn:nbn:se:su:diva-49004DOI: 10.1016/j.jmr.2010.02.007ISI: 000276785300012OAI: oai:DiVA.org:su-49004DiVA, id: diva2:376181
Merknad
authorCount :1Tilgjengelig fra: 2010-12-10 Laget: 2010-12-10 Sist oppdatert: 2017-12-11bibliografisk kontrollert

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