Anisotropic nuclear spin interactions in H2O@C60 determined by solid-state NMR

被引：10

作者：

Concistre, M. ^{[1
]}

Mamone, S. ^{[1
]}

Denning, M. ^{[1
]}

Pileio, G. ^{[1
]}

Lei, X. ^{[2
]}

Li, Y. ^{[2
]}

Carravetta, M. ^{[1
]}

Turro, N. J. ^{[2
]}

Levitt, M. H. ^{[1
]}

机构：

[1] Univ Southampton, Sch Chem, Southampton SO17 1BJ, Hants, England

[2] Columbia Univ, Dept Chem, New York, NY 10027 USA

来源：

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES | 2013年 / 371卷 / 1998期

基金：

英国工程与自然科学研究理事会; 美国国家科学基金会;

关键词：

solid-state NMR; endohedral water fullerene; spin interaction; MAGNETIC-RESONANCE; FULLERENE; HYDROGEN;

D O I：

10.1098/rsta.2012.0102

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We report a solid-state NMR study of the anisotropic nuclear spin interactions in H2O@C-60 at room temperature. We find evidence of significant dipole-dipole interactions between the water protons, and also a proton chemical shift anisotropy (CSA) interaction. The principal axes of these interaction tensors are found to be perpendicular. The magnitude of the CSA is too large to be explained by a model in which the water molecules are partially aligned with respect to an external axis. The evidence indicates that the observed CSA is caused by a distortion of the geometry or electronic structure of the fullerene cages, in response to the presence of the endohedral water.

引用

页数：11

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