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Temperature dependence of the carbon-13 chemical shifts of paraffinic hydrocarbons

✍ Scribed by H. N. Cheng; F. A. Bovey

Publisher
John Wiley and Sons
Year
1978
Tongue
English
Weight
310 KB
Volume
11
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

A study of several linear and branched alkanes indicates that the temperature dependence of ^13^C chemical shifts is a complex phenomenon in which several non‐additive effects may be operative. The chemical shift temperature coefficients dδ/d__T__ do, however, reveal some systematic trends which could be helpful in the assignments of ^13^C resonances. An empirical equation is proposed (akin to that of Grant and Paul for ^13^C chemical shifts) which accurately correlates all the data obtained near ambient temperatures.

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