## Abstract The ϕ angle in a cyclic peptide is determined by the combined use of homonuclear and heteronuclear coupling constants. Two of the four coupling constants that define the ϕ angle in a peptide are determined exactly, two qualitatively. Via Karplus‐type equations, they are transformed into
The determination of conformational effects in some fluorobenzenes by a combined mo/coupling constant treatment
✍ Scribed by Raymond J. Abraham; James F. Busby; M. Ashley Cooper; Anthony M. Roe
- Publisher
- John Wiley and Sons
- Year
- 1974
- Tongue
- English
- Weight
- 185 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The correlation of J~meta~^FF^ in some 1‐substituted‐2,6‐difluorobenzenes (1) with the bond order matrix of the fluorine 2p(π) orbitals provides information on the orientation of the substituents and the position of the counter‐ion in the anilinium salt. The calculated charge densities in the analogous anilinium fluoride ion pair are compared with those of the free ion and neutral molecule.
📜 SIMILAR VOLUMES
## Abstract A combined theoretical and experimental study on the stereochemical behavior of ^77^Se‐^1^H spin‐spin coupling constants has been performed at the second‐order polarization propagator approach level together with heteronuclear multiple‐bond correlation technique in the series of seleniu