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Mesomeric_effect abstract "The mesomeric effect in chemistry is a property of substituents or functional groups in a chemical compound. The effect is used in a qualitative way and describes the electron withdrawing or releasing properties of substituents based on relevant resonance structures and is symbolized by the letter M. The mesomeric effect is a permanent effect and operates in compounds containing atleast one double bond and another double bond or a lone pair separated by a single bond. The mesomeric effect is negative (–M) when the substituent is an electron-withdrawing group and the effect is positive (+M) when based on resonance and the substituent is an electron releasing group.Examples of –M substituents: acetyl (IUPAC ethanoyl) - nitrile - nitroExamples of +M substituents: alcohol - amine - benzeneThe net electron flow from or to the substituent is determined also by the inductive effect. The mesomeric effect as a result of p-orbital overlap (resonance) has absolutely no effect on this inductive effect, as the inductive effect is purely to do with the electronegativity of the atoms and their topology in the molecule (which atoms are connected to which).The concepts of mesomeric effect, mesomerism and mesomer were introduced by Ingold in 1938 as an alternative to Pauling's synonymous concept of resonance. \"Mesomerism\" in this context is often encountered in German and French literature but in English literature the term \"resonance\" dominates.".
Mesomeric_effect thumbnail Mesomeric_effect_(+M)_V.1.png?width=300.
Mesomeric_effect wikiPageID "66189".
Mesomeric_effect wikiPageLength "3059".
Mesomeric_effect wikiPageOutDegree "23".
Mesomeric_effect wikiPageRevisionID "703986616".
Mesomeric_effect wikiPageWikiLink Acetyl.
Mesomeric_effect wikiPageWikiLink Alcohol.
Mesomeric_effect wikiPageWikiLink Amine.
Mesomeric_effect wikiPageWikiLink Atomic_orbital.
Mesomeric_effect wikiPageWikiLink Benzene.
Mesomeric_effect wikiPageWikiLink Category:Chemical_bonding.
Mesomeric_effect wikiPageWikiLink Chemical_compound.
Mesomeric_effect wikiPageWikiLink Chemistry.
Mesomeric_effect wikiPageWikiLink Christopher_Kelk_Ingold.
Mesomeric_effect wikiPageWikiLink Conjugated_system.
Mesomeric_effect wikiPageWikiLink Electronegativity.
Mesomeric_effect wikiPageWikiLink Functional_group.
Mesomeric_effect wikiPageWikiLink Inductive_effect.
Mesomeric_effect wikiPageWikiLink Linus_Pauling.
Mesomeric_effect wikiPageWikiLink List_of_important_publications_in_chemistry.
Mesomeric_effect wikiPageWikiLink Mesomeric_effect.
Mesomeric_effect wikiPageWikiLink Nitrile.
Mesomeric_effect wikiPageWikiLink Nitro_compound.
Mesomeric_effect wikiPageWikiLink Resonance_(chemistry).
Mesomeric_effect wikiPageWikiLink Substituent.
Mesomeric_effect wikiPageWikiLink File:Mesomeric_effect_(+M)_V.1.png.
Mesomeric_effect wikiPageWikiLink File:Mesomeric_effect_(–M)_V.1.png.
Mesomeric_effect wikiPageWikiLinkText "Mesomeric effect".
Mesomeric_effect wikiPageWikiLinkText "mesomeric effect".
Mesomeric_effect wikiPageWikiLinkText "resonance".
Mesomeric_effect file "M03844".
Mesomeric_effect title "Mesomeric effect".
Mesomeric_effect wikiPageUsesTemplate Template:GoldBookRef.
Mesomeric_effect wikiPageUsesTemplate Template:See_also.
Mesomeric_effect subject Category:Chemical_bonding.
Mesomeric_effect hypernym Property.
Mesomeric_effect type Building.
Mesomeric_effect type Thing.
Mesomeric_effect comment "The mesomeric effect in chemistry is a property of substituents or functional groups in a chemical compound. The effect is used in a qualitative way and describes the electron withdrawing or releasing properties of substituents based on relevant resonance structures and is symbolized by the letter M. The mesomeric effect is a permanent effect and operates in compounds containing atleast one double bond and another double bond or a lone pair separated by a single bond.".
Mesomeric_effect label "Mesomeric effect".
Mesomeric_effect seeAlso Resonance_(chemistry).
Mesomeric_effect sameAs Q516811.
Mesomeric_effect sameAs Mezomerní_efekt.
Mesomeric_effect sameAs Mesomerer_Effekt.
Mesomeric_effect sameAs Efecto_mesomérico.
Mesomeric_effect sameAs Effet_mésomère.
Mesomeric_effect sameAs Մեզոմեր_էֆեկտ_կամ_զուգորդման_էֆեկտ.
Mesomeric_effect sameAs メソメリー効果.
Mesomeric_effect sameAs Mesomeereffect.
Mesomeric_effect sameAs Efekt_mezomeryczny.
Mesomeric_effect sameAs Efeito_mesomérico.
Mesomeric_effect sameAs m.0hhxy.
Mesomeric_effect sameAs Мезомерный_эффект.
Mesomeric_effect sameAs Мезомерний_ефект.
Mesomeric_effect sameAs Q516811.
Mesomeric_effect sameAs 中介效应.
Mesomeric_effect wasDerivedFrom Mesomeric_effect?oldid=703986616.
Mesomeric_effect depiction Mesomeric_effect_(+M)_V.1.png.
Mesomeric_effect isPrimaryTopicOf Mesomeric_effect.