Computer-assisted determination of carbon connectivity patterns based on natural abundance one-bond 13C13C coupling constants: terpenes
✍ Scribed by Gabor Lukacs; Andras Neszmelyi
- Book ID
- 104243534
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- French
- Weight
- 255 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0040-4039
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## Abstract The one‐bond ^13^C^13^C coupling constants (^1^__J__CC) in all nine possible dithieno[__b,d__]pyridines were measured at natural isotope abundance by using the INADEQUATE pulse sequence technique. The unambiguous assignments of the ^13^C NMR shifts of these compounds are also reported.
Two 2D J-modulated HSQC-based experiments were designed for precise determination of small residual dipolar one-bond carbon-proton coupling constants in (13)C natural abundance carbohydrates. Crucial to the precision of a few hundredths of Hz achieved by these methods was the use of long modulation