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dc.contributor.authorZhang, Wenzh_CN
dc.contributor.authorCai, Congbozh_CN
dc.contributor.authorCai, Shuhuizh_CN
dc.contributor.authorChen, Xizh_CN
dc.contributor.author陈曦zh_CN
dc.contributor.authorChen, Zhongzh_CN
dc.contributor.author陈忠zh_CN
dc.date.accessioned2011-04-26T08:03:12Z
dc.date.available2011-04-26T08:03:12Z
dc.date.issued2009-09zh_CN
dc.identifier.citationSPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2009,74(5):1138-1144zh_CN
dc.identifier.issn1386-1425zh_CN
dc.identifier.urihttp://dx.doi.org/doi:10.1016/j.saa.2009.09.023zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/2090
dc.description.abstractIntermolecular multiple-quantum coherences (iMQCs) can be utilized to retrieve high-resolution NMR spectra in inhomogeneous magnetic fields. The application of selective pulses in pulse sequences can greatly simplify 2D iMQC spectra. However, so far high-resolution iMQC methods are mainly used in relatively small field inhomogeneities. In this paper, we took the IDEAL-II sequence as an example to study their applicability in moderate inhomogeneous magnetic fields. The experimental and simulation results show that high-resolution NMR spectra can be obtained in moderate inhomogeneous fields if the excitation range of selective pulse is properly set. Once the field inhomogeneity reaches a certain degree, the appearance of undesirable intermolecular cross-peaks due to the distant dipolar field produced by solute spins is inevitable. The spectral quality may vary with sample even in the same moderate inhomogeneous fields, depending on the chemical shift distributions and the J coupling networks of the components under study. The conclusions drawn in this paper are generally applicable to all high-resolution iMQC methods utilizing selective RF pulses. (C) 2009 Elsevier B.V. All rights reserved.zh_CN
dc.description.sponsorshipNational Natural Science Foundation of China [10875101, 10774125]; Chinese Ministry of Education [109092]; Natural Science Foundation of Fujian Province of China [2008J0028]zh_CN
dc.language.isoenzh_CN
dc.publisherPERGAMON-ELSEVIER SCIENCE LTDzh_CN
dc.subjectNMRzh_CN
dc.subjectIntermolecular multiple-quantum coherenceszh_CN
dc.subjectHigh-resolutionzh_CN
dc.subjectModerate inhomogeneous fieldzh_CN
dc.titleIntermolecular double-quantum coherence NMR spectroscopy in moderate inhomogeneous fieldszh_CN
dc.typeArticlezh_CN


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