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Zur Energiedelle von Diradikalen, VI . Das Energieprofil der NO 2 ‐Addition an konjugierte Doppelbindungen: Eine Reaktion mit negativer Aktivierungsenergie
Author(s) -
Roth Wolfgang R.,
Bastigkeit Thorsten,
Börner Sabine
Publication year - 1996
Publication title -
liebigs annalen
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 0947-3440
DOI - 10.1002/jlac.199619960812
Subject(s) - chemistry , double bond , styrene , activation energy , conjugated system , medicinal chemistry , polymer chemistry , organic chemistry , copolymer , polymer
On the Energy Well of Diradicals, VI Part V: Ref. [1] . – The Energy Profile for the NO 2 ‐Addition to Conjugated Double Bonds: A Reaction with Negative Activation Energy From the NO and temperature dependence of the reaction rates of 1,3‐butadiene, styrene, and methylenebenzocyclobutene with NO 2 in the presence of NO, the energy profiles for the formation of the primary adducts are derived, which explain the inverse temperature dependence for the disappearance of the substrate at low NO concentrations and allow to calculate the bond strength of the C–NO 2 bond (57.9 ± 1.3 kcal · mol −1 ).