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Preferred Label : σ-adduct;

IUPAC definition : The product formed by the attachment of an electrophilic or nucleophilic entering group or of a radical to a ring carbon of an aromatic species so that a new σ-bond is formed and the original conjugation is disrupted. (This has generally been called a 'σ-complex', but adduct is more appropriate than complex according to the definitions given.) The term may also be used for analogous adducts to unsaturated (and conjugated) systems in general.;

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The product formed by the attachment of an electrophilic or nucleophilic entering group or of a radical to a ring carbon of an aromatic species so that a new σ-bond is formed and the original conjugation is disrupted. (This has generally been called a 'σ-complex', but adduct is more appropriate than complex according to the definitions given.) The term may also be used for analogous adducts to unsaturated (and conjugated) systems in general.

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28/07/2025


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