کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9587574 1393249 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
HMBC-like experiment based on longitudinal csa/dipolar cross-correlation.
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
HMBC-like experiment based on longitudinal csa/dipolar cross-correlation.
چکیده انگلیسی
A gradient-based sequence is proposed for efficiently filtering out all quantities except the longitudinal two-spin order, created by csa/dipolar cross-correlation rates. The dipolar interaction is between a proton and a heteronucleus, the csa being generally the one of the heteronucleus. Proton detection is carried out to benefit from maximum sensitivity. The resulting two-dimensional spectrum has the same aspect as an HMBC spectrum, implying the existence of a J coupling between the two considered nuclei, but here cross-peaks indicate the strength of the relevant csa/dipolar cross-correlation rate. The method is especially interesting in the case of medium-sized molecules where a given heteronucleus is subjected to several csa/dipolar cross-correlation effects, along with the corresponding J couplings.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetic Resonance - Volume 173, Issue 1, March 2005, Pages 29-33
نویسندگان
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