Evidence of coupled rotational tunnel states of methyl groups of hexamethylbenzene by nuclear magnetic resonance
โ Scribed by Sadamu Takeda; Gen Soda (late); Hideaki Chihara
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- English
- Weight
- 232 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0038-1098
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๐ SIMILAR VOLUMES
NMRRR elperunents, using field cyclin g, on pentamethylbenzene below 15 K yield one Zeeman-tunnel resonance anomaly in the spin-lattice relaxation, at 1.88 T, corresponding to a Larmor frequency equal to half the tunnel frequency, probably of methyl groups, whose reorientation causes the fi\* versus
Low temperature l3c NMR spectra of 80: 20 mixtures of cis and trans-4-CH3-C6HloCHzX, where -CSHlOis 1,4-disubstituted cyclohexyl and X=Br, CN, OH, OCH,, Si(CH,),, Sn(CH3),, Pb(CH,), and HgOCOCH, have been recorded. The signals of the truns (e, e) components were assigned from the ambient temperature