Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Polar_effect> ?p ?o. }
Showing items 1 to 19 of
19
with 100 items per page.
- Polar_effect abstract "The Polar effect or electronic effect in chemistry is the effect exerted by a substituent on modifying electrostatic forces operating on a nearby reaction center. The main contributors to the polar effect are the inductive effect, mesomeric effect and the through-space electronic field effect.An electron withdrawing group or EWG draws electrons away from a reaction center. When this center is an electron rich carbanion or an alkoxide anion, the presence of the electron-withdrawing substituent has a stabilizing effect.Examples of electron withdrawing groups are halogens (F, Cl); nitriles CN; carbonyls CO; nitro groups NO2.An electron releasing group or ERG (otherwise called electron donating groups or EDG) releases electrons into a reaction center and as such stabilizes electron deficient carbocations.Examples of electron releasing groups are alkyl groups; alcohol groups; amino groups.The total substituent effect is the combination of the polar effect and the combined steric effects.In electrophilic aromatic substitution and nucleophilic aromatic substitution substituents are divided into activating groups and deactivating groups where the direction of activation or deactivation is also taken into account.".
- Polar_effect wikiPageExternalLink P04709.html.
- Polar_effect wikiPageID "4457918".
- Polar_effect wikiPageRevisionID "603243553".
- Polar_effect hasPhotoCollection Polar_effect.
- Polar_effect subject Category:Physical_organic_chemistry.
- Polar_effect comment "The Polar effect or electronic effect in chemistry is the effect exerted by a substituent on modifying electrostatic forces operating on a nearby reaction center. The main contributors to the polar effect are the inductive effect, mesomeric effect and the through-space electronic field effect.An electron withdrawing group or EWG draws electrons away from a reaction center.".
- Polar_effect label "Efeito polar".
- Polar_effect label "Polar effect".
- Polar_effect label "Polarisatie-effect".
- Polar_effect label "極性効果".
- Polar_effect sameAs 極性効果.
- Polar_effect sameAs Polarisatie-effect.
- Polar_effect sameAs Efeito_polar.
- Polar_effect sameAs m.0c3jkn.
- Polar_effect sameAs Q3238654.
- Polar_effect sameAs Q3238654.
- Polar_effect wasDerivedFrom Polar_effect?oldid=603243553.
- Polar_effect isPrimaryTopicOf Polar_effect.