Unification of the quantum and classical theories of methyl NMR
β Scribed by S. Clough
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 80 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0926-2040
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β¦ Synopsis
The existing low and high temperature theories of methyl NMR are not linked because two conditions imposed on state functions in the low temperature theory are not compatible with the classical rotations on which the high temperature theory is based. The conditions do not occur in a geometrical theory of quantum phenomena in which particles and waves have separate roles. When applied to methyl dynamics, this theory covers the whole temperature range.
π SIMILAR VOLUMES
The purpose of the present paper is to elucidate the relationship betweeI\ the time dependence of quantum operators in the Heisenberg picture and the time dependence of the corresponding dynamical variables in the underlying classical theory. This problem is studied in the nonrelativistic particle m
## Abstract The proton resonance spectra of a series of 2,7βdisubstitutedβ4,5βbis(2βpyridyl)phenanthreneβ3,6βdiols are examined with emphasis on the shielding effects produced by aromatic βring currents.β In this series, two pyridine rings are rigidly held less than 3.4 Γ apart and with considerabl