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MAGNITUDE FIELD EFFECT [1 record]
Record 1 - internal organization data 1997-09-26
Record 1, English
Record 1, Subject field(s)
- Chemistry
Record 1, Main entry term, English
- direct effect
1, record 1, English, direct%20effect
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- magnitude of the field effect 1, record 1, English, magnitude%20of%20the%20field%20effect
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 OBS
[The field effect is] an experimentally observable effect (on reaction rates, etc.) of intramolecular coulombic interaction between the centre of interest and a remote pole or dipole, by direct action through space rather than through bonds. The magnitude of the field effect (or direct effect) is dependent on the intensity, orientation, and shortest distance between the centre of interest and the remote pole or dipole. An approach to its calculation was described by Kirkwood and Westheimer (1938). 1, record 1, English, - direct%20effect
Record 1, Key term(s)
- field effect magnitude
Record 1, French
Record 1, Domaine(s)
- Chimie
Record 1, Main entry term, French
- effet direct
1, record 1, French, effet%20direct
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- amplitude de l'effet de champ 1, record 1, French, amplitude%20de%20l%27effet%20de%20champ
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 OBS
[L'effet de champ est observable] expérimentalement (sur les vitesses de réaction, par exemple) et [...] résulte d'une interaction coulombique intramoléculaire, à travers l'espace plutôt qu'à travers les liaisons, entre un foyer donné d'une molécule et une charge ou un dipôle. L'amplitude de l'effet de champ, appelé également «effet direct», est fonction de l'intensité, de l'orientation et de la distance la plus courte entre le foyer et la charge ou le dipôle. Kirkwood et Westheimer (1938) ont décrit une méthode de calcul approché de cet effet. 1, record 1, French, - effet%20direct
Record 1, Spanish
Record 1, Textual support, Spanish
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