NMR heteronuclear correlation between quadrupolar nuclei in solids

被引：108

作者：

Iuga, D

Morais, C

Gan, ZH

Neuville, DR

Cormier, L

Massiot, D

机构：

[1] CNRS, CRMHT, F-45071 Orleans, France

[2] CNRS, UMR 7704, IPGP, F-75005 Paris, France

[3] Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

[4] CNRS, IMPMC, F-75015 Paris, France

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2005年 / 127卷 / 33期

关键词：

D O I：

10.1021/ja052452n

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We show for the first time that it is possible to acquire high-resolution heteronuclear NMR correlation experiments in solid state between second-order-broadened half integer quadrupolar nuclei (i.e., 27Al and 17O) using the scalar J-coupling. The sensitivity of the experiment is dramatically improved at high fields (gain proportional to the fourth power of the principal field) with a combination of signal enhancement techniques. This turns a challenging experiment into a real tool. We apply this experiment to characterize a calcium aluminate glass in which we prove the presence of tricluster μ3 oxygen sites and describe the signature of their directly bonded aluminum sites. Applications involve a large range of possible pairs of quadrupolar nuclei in different materials, such as glasses, porous or mesoporous framework materials, zeolites, hybrid organic-inorganic, and bioinvolved materials. Copyright © 2005 American Chemical Society.

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收藏

页码：11540 / 11541

页数：2

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