## Abstract Magnitudes and signs of ^13^C^13^C coupling constants in compounds of the type Ph^13^CR^1^R^2^^13^CR^1^R^2^Ph have been determined and the results are discussed in a broader context. Two types of coupling constants, __J__(C‐i, C‐α) and __J__(C‐i, C‐β), between aromatic carbon atoms an
Determination of relative signs of 13C13C coupling constants in doubly labelled compounds
✍ Scribed by P. E. Hansen; O. K. Poulsen; A. Berg
- Publisher
- John Wiley and Sons
- Year
- 1975
- Tongue
- English
- Weight
- 187 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
Abstract
Analysis of the noise decoupled ^13^C spectra of doubly ^13^C labelled compounds where the two labelled carbons are identical, makes the determination of reltive signs of ^13^C^13^C coupling constants possible in a very simple way. The involved carbon form AA'X or AA'B spin systems.
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