<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ganapathy, Subramanian</style></author><author><style face="normal" font="default" size="100%">Delevoye, L.</style></author><author><style face="normal" font="default" size="100%">Arnoureux, J. P.</style></author><author><style face="normal" font="default" size="100%">Madhu, Perunthiruthy K.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Heteronuclear dipolar decoupling effects on multiple-quantum and satellite-transition magic-angle spinning NMR spectra</style></title><secondary-title><style face="normal" font="default" size="100%">Magnetic Resonance in Chemistry</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">heteronuclear broadening</style></keyword><keyword><style  face="normal" font="default" size="100%">heteronuclear decoupling</style></keyword><keyword><style  face="normal" font="default" size="100%">homogeneous broadening</style></keyword><keyword><style  face="normal" font="default" size="100%">MQMAS</style></keyword><keyword><style  face="normal" font="default" size="100%">quadrupolar nuclei</style></keyword><keyword><style  face="normal" font="default" size="100%">Solid-state NMR</style></keyword><keyword><style  face="normal" font="default" size="100%">STMAS</style></keyword><keyword><style  face="normal" font="default" size="100%">TPPM</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">OCT</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">10</style></number><publisher><style face="normal" font="default" size="100%">JOHN WILEY &amp; SONS LTD</style></publisher><pub-location><style face="normal" font="default" size="100%">THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND</style></pub-location><volume><style face="normal" font="default" size="100%">46</style></volume><pages><style face="normal" font="default" size="100%">948-954</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;We here report on the influence of heteronuclear dipolar decoupling on the Al-27 3QMAS, 5QMAS, and the double-quantum filter-satellite-transition magic-angle spinning (DQF-STMAS) spectra of a strongly dipolar-coupled system, gibbsite. The requirements for heteronuclear dipolar decoupling increase with the order of coherence evolving in the indirect dimension of a two-dimensional (2D) experiment. The isotropic line width of the high-resolution 2D spectra, in samples like gibbsite, is composed of four parts: the distribution of isotropic shifts (delta(ISO), delta(QIS)), the homogeneous broadening related to the proton-proton flip-flop terms, the Al-27-Al-27 homonulcear dipolar couplings, and the H-1-Al-27 heteronuclear dipolar couplings. It is shown that, even in the case of gibbsite, where a strong proton-proton bath exists, the main resolution limiting factor in these experiments resides in the H-1-Al-27 dipolar interaction. Copyright (C) 2008 John Wiley &amp;amp; Sons, Ltd.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">10</style></issue><work-type><style face="normal" font="default" size="100%">Article</style></work-type><custom3><style face="normal" font="default" size="100%">Foreign</style></custom3><custom4><style face="normal" font="default" size="100%">1.226</style></custom4></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Harindranath, K.</style></author><author><style face="normal" font="default" size="100%">Viswanath, K. Anusree</style></author><author><style face="normal" font="default" size="100%">Chandran, C. Vinod</style></author><author><style face="normal" font="default" size="100%">Braeuniger, Thomas</style></author><author><style face="normal" font="default" size="100%">Madhu, Perunthiruthy K.</style></author><author><style face="normal" font="default" size="100%">Ajithkumar, Thalasseril G.</style></author><author><style face="normal" font="default" size="100%">Joy, Pattayil Alias</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Evidence for the co-existence of distorted tetrahedral and trigonal bipyramidal aluminium sites in SrAl12O19 from Al-27 NMR studies</style></title><secondary-title><style face="normal" font="default" size="100%">Solid State Communications</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Local structure</style></keyword><keyword><style  face="normal" font="default" size="100%">MQMAS</style></keyword><keyword><style  face="normal" font="default" size="100%">Nuclear magnetic resonance</style></keyword><keyword><style  face="normal" font="default" size="100%">Strontium aluminate</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">JAN</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">5-6</style></number><publisher><style face="normal" font="default" size="100%">PERGAMON-ELSEVIER SCIENCE LTD</style></publisher><pub-location><style face="normal" font="default" size="100%">THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND</style></pub-location><volume><style face="normal" font="default" size="100%">150</style></volume><pages><style face="normal" font="default" size="100%">262-266</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Strontium aluminate, SrAl12O19, is a ceramic material having the hexagonal magnetoplumbite-type structure, with multiple Al coordination environments. An earlier low-field Al-27 solid-state NMR study reported five different Al sites in this system: one AlO4, one AlO5, and three AlO6 sites; whereas a later high-field study showed that the AlO5 site is a distorted AlO4 site with a very large quadrupolar coupling constant (similar to 20 MHz). Our magic angle spinning (MAS) and 3-quantum magic angle spinning (3QMAS) NMR studies at 7.05 T unambiguously show evidence for an AlO5 site. However, evidence for the presence of a distorted AlO4 site is obtained from studies at high fields (16.4 and 17.6 T), in addition to the AlO5 site. Thus the present solid-state NMR studies give evidence for the simultaneous presence of both the five-coordinated and distorted four-coordinated sites in this system. (C) 2009 Elsevier Ltd. All rights reserved.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">5-6</style></issue><custom3><style face="normal" font="default" size="100%">Foreign</style></custom3><custom4><style face="normal" font="default" size="100%">1.979</style></custom4></record></records></xml>