NMR relaxation of quadrupolar nuclei as a probe of the motion of guest species in sodalite cavities

R. Jelinek, G. A. Ozin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Useful information on interactions and motion of guest molecules in sodalite cavities is obtained by estimating the spin-lattice and spin-echo decay rates of encapsulated Br- ions. An extremely fast spin-lattice relaxation rate is observed for 81Br nuclei, adjacent to Br--empty cages which contain rapidly tumbling water molecules. We detect a further significant different T1 of the 81Br in Na8Br2-sodalite and Ag8Br2-sodalite, respectively, which probably indicates a less restricted motion within the cavities of the Ag+-exchanged material. Spin-echo decay experiments additionally indicate a difference between the dynamic properties of the Br- anion in the encapsulated Na4Br and Ag4Br clusters, respectively.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium Proceedings
PublisherPubl by Materials Research Society
Pages113-119
Number of pages7
ISBN (Print)1558991859
StatePublished - 1 Jan 1993
Externally publishedYes
EventProceedings of the Second Symposium on Dynamics in Small Confining Systems - Boston, MA, USA
Duration: 30 Nov 19924 Dec 1992

Publication series

NameMaterials Research Society Symposium Proceedings
Volume290
ISSN (Print)0272-9172

Conference

ConferenceProceedings of the Second Symposium on Dynamics in Small Confining Systems
CityBoston, MA, USA
Period30/11/924/12/92

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