کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5407475 | 1393218 | 2007 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
HAT HMBC: A hybrid of H2BC and HMBC overcoming shortcomings of both
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
A new 2D NMR experiment, HAT HMBC, that is a hybrid of H2BC and HMBC aims at establishing two-bond correlations absent in H2BC spectra because of vanishing 3JHH coupling constants. The basic idea is to create an additional Ï phase difference in the multiplet structure in HMBC peaks with respect to the n+1JHH coupling constant between the proton(s) attached to a 13C and a 1H separated by n bonds. Thus HMBC peaks associated with small JHH will be the most attenuated in a HAT HMBC spectrum in comparison to a regular HMBC spectrum, i.e. peaks associated with n+1JHH and nJCH will for n > 2 usually be strongly attenuated. The HAT HMBC pulse sequences contain the same number of pulses as regular HMBC and are only a few milliseconds longer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetic Resonance - Volume 184, Issue 2, February 2007, Pages 315-321
Journal: Journal of Magnetic Resonance - Volume 184, Issue 2, February 2007, Pages 315-321
نویسندگان
Andrew J. Benie, Ole W. Sørensen,