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首页> 外文期刊>Chemical Physics Letters >Rotary resonance recoupling of C-13-H-1 dipolar interactions in magic angle spinning C-13 NMR of dynamic solids
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Rotary resonance recoupling of C-13-H-1 dipolar interactions in magic angle spinning C-13 NMR of dynamic solids

机译:动态固体的魔角旋转C-13 NMR中C-13-H-1偶极相互作用的旋转共振重耦合

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摘要

Rotary resonance recoupling of heteronuclear C-13 - H-1 dipolar interactions in magic angle spinning solid state C-13 NMR spectra (recorded under conditions of H-1 decoupling at frequency nu(1) and magic angle spinning at frequency nu(r)) has been studied for three examples of molecular solids (adamantane, ferrocene and hexamethylbenzene) in which substantial molecular motion is known to occur. It is shown that when rotary resonance conditions are satisfied (i.e. nu(1)u(r) = n, for n = 1 or 2), the recoupling can lead to motionally averaged Fake-like powder patterns from which information on C-13 - H-1 internuclear distances and/or molecular motion can be derived. (C) 2000 Elsevier Science B.V. All rights reserved. [References: 25]
机译:魔术角旋转固态C-13 NMR光谱中异核C-13-H-1偶极相互作用的旋转共振重耦合(记录在H-1解耦的频率nu(1)和魔术角旋转的频率nu(r)的条件下已经研究了)的分子固体的三个例子(金刚烷,二茂铁和六甲基苯),其中已知发生了明显的分子运动。结果表明,当满足旋转共振条件(即nu(1)/ nu(r)= n,对于n = 1或2)时,重新耦合会导致运动平均的仿冒伪造粉末模式,由此得出关于C-可以得出13-H-1核间距离和/或分子运动。 (C)2000 Elsevier Science B.V.保留所有权利。 [参考:25]

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