Detection and characterization of intermolecular multiple-quantum coherence NMR signals of IS (I=1/2; S=3/2) spin systems

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	Detection and characterization of intermolecular multiple-quantum coherence NMR signals of IS (I=1/2; S=3/2) spin systems
	Zhang, Wen ; Chen, Song ; Cai, Shuhui ; Chen, Zhong ; Zhang W(张文)
刊名	http://dx.doi.org/10.1016/j.saa.2010.12.047
	2011-03
关键词	NUCLEAR-MAGNETIC-RESONANCE PRODUCT OPERATOR-THEORY QUADRUPOLAR NUCLEI HIGH-RESOLUTION INHOMOGENEOUS FIELDS CROSS-POLARIZATION MQMAS NMR IN-VIVO SPECTROSCOPY NA-23
英文摘要	NNSF of China [10875101, 11074209]; Chinese Ministry of Education [109092]; Research Fund for the Doctoral Program of Higher Education of China [20090121110030]; Intermolecular multiple-quantum coherences (iMQCs) have some intrinsic properties different from conventional single-quantum coherences in solution NMR. In this paper, we extended our study to heteronuclear IMQCs in IS (I=1/2, S=3/2) spin systems. A sample of sodium chloride (NaCl) water solution was taken as an example. Heteronuclear COSY revamped by asymmetric Z-gradient echo detection (CRAZED) experiments were performed. One- and two-dimensional heteronuclear iMQC spectra were obtained. The quantum-mechanical treatment was used to deduce the signal expressions. Magic angle experiments validate that the signals are indeed from intermolecular dipolar interaction and insensitive to the imperfection of radio-frequency (RF) flip angles. Both experimental results and theoretical analysis indicate that heteronuclear CRAZED experiment allows coherence transfer from spin-3/2 nuclei to spin-1/2, and vice verse. Furthermore, the dependences of iMQC signal intensities on RF pulse flip angles follow the same rules as those for heteronuclear IS (I=1/2, S=1/2 or 1) spin systems. (C) 2010 Elsevier B.V. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/66255]
专题	数学科学－已发表论文
推荐引用方式 GB/T 7714	Zhang, Wen,Chen, Song,Cai, Shuhui,et al. Detection and characterization of intermolecular multiple-quantum coherence NMR signals of IS (I=1/2; S=3/2) spin systems[J]. http://dx.doi.org/10.1016/j.saa.2010.12.047,2011.
APA	Zhang, Wen,Chen, Song,Cai, Shuhui,Chen, Zhong,&张文.(2011).Detection and characterization of intermolecular multiple-quantum coherence NMR signals of IS (I=1/2; S=3/2) spin systems.http://dx.doi.org/10.1016/j.saa.2010.12.047.
MLA	Zhang, Wen,et al."Detection and characterization of intermolecular multiple-quantum coherence NMR signals of IS (I=1/2; S=3/2) spin systems".http://dx.doi.org/10.1016/j.saa.2010.12.047 (2011).