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

R. Jelinek; G. A. Ozin

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

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-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 language	English
Title of host publication	Materials Research Society Symposium Proceedings
Publisher	Publ by Materials Research Society
Pages	113-119
Number of pages	7
ISBN (Print)	1558991859
State	Published - 1 Jan 1993
Externally published	Yes
Event	Proceedings of the Second Symposium on Dynamics in Small Confining Systems - Boston, MA, USA Duration: 30 Nov 1992 → 4 Dec 1992

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	290
ISSN (Print)	0272-9172

Conference

Conference	Proceedings of the Second Symposium on Dynamics in Small Confining Systems
City	Boston, MA, USA
Period	30/11/92 → 4/12/92

ASJC Scopus subject areas

Materials Science (all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Cite this

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title = "NMR relaxation of quadrupolar nuclei as a probe of the motion of guest species in sodalite cavities",

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.",

author = "R. Jelinek and Ozin, {G. A.}",

year = "1993",

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series = "Materials Research Society Symposium Proceedings",

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}

Jelinek, R & Ozin, GA 1993, NMR relaxation of quadrupolar nuclei as a probe of the motion of guest species in sodalite cavities. in Materials Research Society Symposium Proceedings. Materials Research Society Symposium Proceedings, vol. 290, Publ by Materials Research Society, pp. 113-119, Proceedings of the Second Symposium on Dynamics in Small Confining Systems, Boston, MA, USA, 30/11/92.

NMR relaxation of quadrupolar nuclei as a probe of the motion of guest species in sodalite cavities. / Jelinek, R.; Ozin, G. A.

Materials Research Society Symposium Proceedings. Publ by Materials Research Society, 1993. p. 113-119 (Materials Research Society Symposium Proceedings; Vol. 290).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Jelinek, R.

AU - Ozin, G. A.

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N2 - 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.

AB - 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.

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T3 - Materials Research Society Symposium Proceedings

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BT - Materials Research Society Symposium Proceedings

PB - Publ by Materials Research Society

T2 - Proceedings of the Second Symposium on Dynamics in Small Confining Systems

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ER -

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

Abstract

Publication series

Conference

ASJC Scopus subject areas

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