mesomerism

https://doi.org/10.1351/goldbook.M03845
Essentially synonymous with @R05326@. The term is particularly associated with the picture of π-electrons as less localized in an actual molecule than in a @L03513@. The term is intended to imply that the correct representation of a structure is intermediate between two or more Lewis formulae.
See also:
aromatic (Def. 2)
,
delocalization
Source:
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1139 [Terms] [Paper]
Citation: 'mesomerism' in IUPAC Compendium of Chemical Terminology, 3rd ed. International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. https://doi.org/10.1351/goldbook.M03845 RIS BibTex EndNote
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Last revised: February 24, 2014