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Relative signs of13C-X coupling constants from13C satellites in130C NMR spectra

✍ Scribed by H.J. Jakobsen; T. Lund; S. Sørensen

Publisher
Elsevier Science
Year
1979
Weight
231 KB
Volume
33
Category
Article
ISSN
0022-2364

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📜 SIMILAR VOLUMES

Determination of relative signs of 13C13
Determination of relative signs of 13C13C coupling constants in doubly labelled compounds
✍ P. E. Hansen; O. K. Poulsen; A. Berg 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 English ⚖ 187 KB

## 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.

13C13C coupling constants in derivatives
13C13C coupling constants in derivatives of trans-stilbene and tetraphenylethylene. Determination of relative signs II
✍ P. E. Hansen; O. K. Poulsen; A. Berg 📂 Article 📅 1976 🏛 John Wiley and Sons 🌐 English ⚖ 493 KB

## 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