## Abstract ^13^C magnetic resonance spectra of several enamino ketones with secondary and tertiary amino groups were obtained for trifluoroacetic acid solutions. In both series __O__‐protonation is predominant and the chemical shifts are related to the electron density changes with respect to the
✦ LIBER ✦
13C, 2H, 1H n.m.r. and gpc study of structural evolution of a subbituminous coal during treatment with tetralin at 427 °C
✍ Scribed by James A. Franz
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- English
- Weight
- 986 KB
- Volume
- 58
- Category
- Article
- ISSN
- 0016-2361
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
Structural studies by 1H and 13C dynamic
✍
Lech Kozerski
📂
Article
📅
1977
🏛
John Wiley and Sons
🌐
English
⚖ 510 KB
Evidence for a novel β-bend structure wi
✍
Mamta S. Prachand; Shanteri Singh; M. M. Dhingra; Usha Singh; Sunil K. Ghosh; V.
📂
Article
📅
1993
🏛
John Wiley and Sons
🌐
English
⚖ 746 KB
## Abstract The solution conformation of cyclo‐(Pro‐Pro‐Gly)~2~ in CDCl~3~ and DMSO‐__d__~6~ was investigated by ^1^H and ^13^C NMR spectroscopy. In CDCl~3~ solution the peptide maintains a conformational homogeneity at 300 K and the single asymmetric conformation observed is characterized by a sin