Rate constants for the reactions of conjugated olefins with NO2 in the gas phase

Autor:	Hiroaki Nagura, Shin Suzuki, Tomohiro Ohta
Rok vydání:	1986
Předmět:	Inorganic Chemistry chemistry.chemical_compound Reaction rate constant Chemistry Organic Chemistry Physical chemistry Physical and Theoretical Chemistry Conjugated system Free-energy relationship Photochemistry Biochemistry Butene Gas phase
Zdroj:	International Journal of Chemical Kinetics. 18:1-11
ISSN:	1097-4601 0538-8066
DOI:	10.1002/kin.550180102
Popis:	Gas-phase rate constants for the reaction of NO2 with 16 conjugated olefins were determined at room temperature by either conventional methods for bimolecular processes or by competitive reactions. It was found that the rate constants for conjugated olefins were larger than those for simple mono-olefins by factors of 103–104. Temperature dependence studies reveal that the difference in the rate constants for the two types of reactions can primarily be attributed to differences in their activation energies: k1,3-cyclohexadiene = 5.8 × 10−14 exp[−(6.1 ± 1.6)/RT] cm3 molecule−1 s−1; kcis-2-butene = 4.68 × 10−14 exp(−11.2/RT) cm3 molecule−1 s−1 [2]. A linear free energy relationship between the reactions of OH and NO2 with conjugated diolefins was observed.
Databáze:	OpenAIRE
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