Proton chemical shift anisotropy in carboxyl groups
✍ Scribed by H. Raber; G. Brünger; M. Mehring
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 153 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract The additivity of the proton and carbon chemical shift increments due to structural changes in a series of conjugate acids derived from benzene polycarboxylic acids is reported. In the acids, two sets of increments had been applied, one to the __ortho__ diacids and one to acids which do
A previous model for the calculation of proton chemical shifts in substituted alkanes based upon partial atomic charges and steric interactions has been modiÐed by the replacement of the CÈC bond anisotropy term with an orientation-dependent c e †ect (i.e. C É C É C É H). The new scheme (CHARGE5) pr
Perimental data it is customary to assume that the chemical shift is axially symmetric around the bend asis. NMR experiments on 1,lditluoroethene are reported from which this assumption can be tested. The results confirm axial symmetry of the 19F chemical shift tensor around the CF bond.
## Abstract Values for the chemical shift anisotropies of the α‐ and β‐anomeric protons in [1‐^13^C]‐D‐glucose were measured by ortho‐ROESY and SLOESY experiments using non‐selective and selective ^1^H spin‐locking by DANTE pulse trains, respectively. The experiments were performed under the condit
It is shown that the proton chemical-shift anisotropy of hydrate crystals affect dipolar powder pattern at 7.0 T. This may be clearly observed via an asymmetric envelope of dipolar spinning sidebands in magic-angle spinning proton spectra.