Wnivereity of Salford, galford, Lance.) (Received in UK 27 July 1967) It is now ~011 known1 that benzene ooueee coneiderable Bolvent shifte of pi-&m reacnauoea (A-TC6D6 -fCCla) with respect to IYI 'inert' solvent in WWD spectra. The origin of suoh solvent shifts ie believed to lie in the ability of
Edge association and nuclear magnetic resonance solvent effects in cyclopropane
β Scribed by G.E. Schenck; F.A.L. Anet
- Publisher
- Elsevier Science
- Year
- 1971
- Tongue
- French
- Weight
- 129 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
132 Cyclopropane, unlike other cycloalkanes, is distinctly basic and strongly anisotropic 3 1 in both its magnetic susceptibility and its basicity.
The magnetic anisotropy of cyclopropane derivatives is observed frequently in NMR spectra as the strong shielding of protons 495 located above the face of a cyclopropane ring.
π SIMILAR VOLUMES
## Abstract The benzeneβinduced solvent effects upon the proton chemical shifts of various pyrazines, pyrimidines and their __N__βoxides are described. Larger chemical shift effects, implying closer benzeneheterocycle association, are noted in the __N__βoxides as compared to the nonβoxidized hetero