The relative energies and dipolar properties of two conformers of 2,2V-bipyridine (1) were calculated using AM1 and ab initio methods. Dipole moments of 1 and pyridine in many organic solvents were determined. On this basis, the Gibbs energy DG (s) for the conformational s-transWs-cis equilibrium of
Solvent influence on conformational equilibrium in 3-nitrobenzaldehyde
✍ Scribed by A. Konopacka; J. Kalenik; Z. Pawełka
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 115 KB
- Volume
- 705
- Category
- Article
- ISSN
- 0022-2860
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The 'H and IBF NMR parameters of 5-fluoro-1,3-dioxan (1) dissolved in a number of solvent systems are interpreted on the basis of fast inversion between two chair conformations. In cyclohexane solution the two chair conformations are almost equally populated, whereas in more polar solvents, such as
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