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Volumn 45, Issue 4, 2008, Pages 1109-1113

Unsymmetrical indirect covariance processing of hyphenated and long-range heteronuclear 2D NMR spectra - Enhanced visualization of 2J CH and 4JCH correlation responses

Author keywords

[No Author keywords available]

Indexed keywords

CARBON 13; NITROGEN 15; PROTON;

EID: 47749148896     PISSN: 0022152X     EISSN: None     Source Type: Journal    
DOI: 10.1002/jhet.5570450426     Document Type: Article
Times cited : (8)

References (16)
  • 15
    • 35448993602 scopus 로고    scopus 로고
    • Webb, G. A, Ed, Academic Press, New York
    • Martin, G. E. in Ann. Rep. NMR Spectrosc. Webb, G. A., Ed., Academic Press, New York, 2002, vol. 46, pp. 37-100.
    • (2002) Ann. Rep. NMR Spectrosc , vol.46 , pp. 37-100
    • Martin, G.E.1
  • 16
    • 47749142497 scopus 로고    scopus 로고
    • In several reports (see refs. 2-4) it has been feasible to perform the experiment comparable to the indirect covariance or unsymmetrical indirect covariance processed data allowing direct s/n comparison of the experimental and calculated spectra to be made. In contrast, in the present case, there is no experimental equivalent to the spectrum derived by unsymmetrical indirect covariance processing shown in Figure 1. Consequently, we can only express the results of unsymmetrical indirect covariance processing vs. the initial GHMBC spectrum in relative terms. The weaker 2JCH and 4JCH correlations are present in the GHMBC spectrum but were below the threshold used to prepare contour plots of those data. In contrast, these responses are observed above the threshold used to prepare the contour plot shown in Figure 1. A direct comparison would entail plotting 1H spectral slices from the GHMBC spectrum at a given 13C shif
    • 13C chemical shift from the spectrum shown in Figure 1, which the authors did not feel was a legitimate compareison.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.