The inΓuence of hydrogen bonding (HB) on the 13C chemical shift tensors in four solid amino acids was studied by the ab initio gauge-included atomic orbital (GIAO) approach. The results of the present calculations were compared with those predicted previously and with the experimentally observed shi
β¦ LIBER β¦
Solid state 13C and in situ1H NMR study on the effect of melamine on the thermal degradation of a flexible polyurethane foam
β Scribed by Caroline M Dick; Celine Denecker; John J Liggat; Musarrat H Mohammed; Colin E Snape; Gordon Seeley; Christopher Lindsay; Be Eling; Pierre Chaffanjon
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 101 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0959-8103
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The cis/trans conformational equilibrium of the two Ac-Pro isomers of the beta-turn model dipeptide [13C]-Ac-L-Pro-D-Ala-NHMe, 98% 13C enriched at the acetyl carbonyl atom, was investigated by the use of variable temperature gradient enhanced 1H-nmr, two-dimensional (2D) 1H,1H nuclear Overhauser eff