{"term":{"id":"02358","title":"field effect","longtitle":"IUPAC Gold Book - field effect","doi":"10.1351\/goldbook.F02358","code":"F02358","status":"current","also defines":"<em>also defines<\/em>: direct effect","definitions":[{"id":1,"text":"An experimentally observable effect symbolized by \\(F\\) (on reaction rates, etc.) of intramolecular coulombic interaction between the centre of interest and a remote unipole or dipole, by direct action through space rather than through bonds. The magnitude of the field effect (or 'direct effect') depends on the unipolar charge\/dipole moment, orientation of dipole, shortest distance between the centre of interest and the remote unipole or dipole, and on the effective dielectric constant.","links":[{"term":"dielectric constant","url":"https:\/\/goldbook.iupac.org\/terms\/view\/D01697"},{"term":"dipole moment","url":"https:\/\/goldbook.iupac.org\/terms\/view\/D01761"},{"term":"electronic effect","url":"https:\/\/goldbook.iupac.org\/terms\/view\/E01996"},{"term":"inductive effect","url":"https:\/\/goldbook.iupac.org\/terms\/view\/I03021"},{"term":"intramolecular","url":"https:\/\/goldbook.iupac.org\/terms\/view\/I03130"}],"sources":["PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1115 (https:\/\/doi.org\/10.1351\/pac199466051077)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/F02358\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/F02358\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/F02358\/plain"},"citation":"Citation: 'field effect' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351\/goldbook.F02358","license":"The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/) for individual terms.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","disclaimer":"The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.","accessed":"2026-05-10T18:57:57+00:00"}}