https://doi.org/10.1351/goldbook.M03819
A cyclohexadienyl derivative formed as @[email protected] from a nucleophile (@[email protected]) and an @[email protected] or heteroaromatic compound, also called Jackson–Meisenheimer @[email protected] In earlier usage the term 'Meisenheimer complex' was restricted to the typical Meisenheimer alkoxide @[email protected] of nitro-substituted aromatic @[email protected], e.g.
M03819-1.png
Analogous cationic adducts, such as:
M03819-2.png
considered to be @[email protected] in @[email protected] aromatic @[email protected], are called 'Wheland intermediates', and sometimes, inappropriately, σ-complexes.
See also:
σ-adduct
Source:
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1138 [Terms] [Paper]
See also:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1348 [Terms] [Paper]