ISSN:
0749-1581
Keywords:
Low temperature
;
13C NMR
;
methylcyclohexane
;
ethylcyclohexane
;
isopropylcyclohexane
;
axial and equatorial conformers
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Low-temperature 13C NMR spectral data have been obtained for equatorial and axial methyl-, ethyl- and isopropylcyclohexane using a high-temperature cryogenic trapping technique. 13C chemical shift differences between major and minor conformations of each compound are discussed in terms of chemical shift theories. A convenient synthesis of deuteriated dichlorofluoro- and difluorochloromethane, which are excellent low-temperature NMR solvents, is also presented.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260250113
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