A quantitative measure for nuclear spin-spin, nuclear-electron (
hyperfine coupling) and electron-electron (fine
coupling in
EPR)
coupling in magnetic
resonance spectroscopy. The '
indirect' or scalar
NMR coupling constants are in a first approximation independent of the external magnetic field and are expressed in
.
Source:
PAC, 1994, 66, 1077
(Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994))
on page 1101
Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
doi:10.1351/goldbook.
