## Abstract The chemical shifts of amino acid __N__‐carboxyanhydrides (NCAs) and cyclic or linear urethanes are less sensitive to solvent effects than those of amides and lactams. The values of the one‐bond ^15^N^1^H coupling constants depend on the solvent and are 5‐8 Hz larger than those of urea
[NMR Basic Principles and Progress] 15N-NMR Spectroscopy Volume 18 || Reference for 15N Chemical Shifts
✍ Scribed by Martin, Gérard J.; Martin, Maryvonne L.; Gouesnard, Jean-Paul
- Book ID
- 120050519
- Publisher
- Springer Berlin Heidelberg
- Year
- 1981
- Weight
- 876 KB
- Category
- Article
- ISBN
- 3642501729
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📜 SIMILAR VOLUMES
## Abstract ^15^N NMR chemical shifts are reported for cyanamide, phenylcyanamide and nine substituted phenylcyanamide derivatives. Results are discussed in terms of the degree of the π interaction between the cyanamide moiety and the aromatic ring and the stereoelectronic influence of the substitu
## Abstract The ^1^H and ^13^C NMR resonances of 16 purine glucosides were assigned by a combination of one‐ and two‐dimensional NMR experiments, including gs‐COSY, gs‐HSQC, and gs‐HMBC, in order to characterize the effect of substituent and the position of glucose unit on the NMR chemical shifts.
The magnitudes and orientations of the 15 N chemical shift tensor of [1-15 N]-2-deoxyguanosine were determined from a polycrystalline sample using the two-dimensional PISEMA experiment. The magnitudes of the principal values of the 15 N chemical shift tensor of the N1 nitrogen of [1-15 N]-2-deoxygua