## coupling constant (spin-spin), $$J$$

https://doi.org/10.1351/goldbook.C01383
A quantitative measure for nuclear spin-spin, nuclear-electron (@[email protected]) and electron-electron (fine @[email protected] in EPR) @[email protected] in magnetic @[email protected] @[email protected] The 'indirect' or scalar NMR @[email protected] constants are in a first approximation independent of the external magnetic field and are expressed in $$\mathrm{Hz}$$.
Source:
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1101 [Terms] [Paper]