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Rate constants for the addition of the 2-cyano-2-propyl radical to alkenes in solution

✍ Scribed by K. Hėberger; H. Fischer

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
811 KB
Volume
25
Category
Article
ISSN
0538-8066

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✦ Synopsis

Absolute rate constants for the addition of the 2-cyano-2-propyl radical to 26 alkenes CH2 = CXY at 315 K were determined in solution by time-resolved electron-spin-resonance spectroscopy. They vary with the alkene substituents from 30 M-' s-l to 7'010 M-' s-'. For styrene the temperature dependence is given by log k/M-' s -' = 7.7 -26.1/0 where 0 = 2.303 RT in kJ/mol. An analysis of the substituent effects in terms of polar and enthalpic factors reveals a dominant influence of the overall reaction enthalpy.

📜 SIMILAR VOLUMES

Rate constants for the addition of the 2
Rate constants for the addition of the 2-hydroxy-2-propyl radical to alkenes in solution
✍ K. Héberger; H. Fischer 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 432 KB 👁 1 views

Absolute rate constants for the addition of the 2-hydroxy-2-propyl radical to 18 substituted alkenes (CH2 = C X Y ) were determined at (296 -+ 1) Kin 2-propanol by time-resolved electronspin-resonance spectroscopy. With alkene substitution the rate constants vary by more than 6 orders of magnitude.

Rate Constants for the Addition of 2-Hyd
Rate Constants for the Addition of 2-Hydroxy-2-propyl Radicals to Alkenes in Solution studied by laser flash photolysis
✍ Rainer Martschke; Robert D. Farley; Hanns Fischer 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 German ⚖ 487 KB 👁 1 views

Absolute rate constants for the addition of the highly nucleophilic 2-hydroxy-2-propyl radical to eight fast-reacting 1and 1,l-disubstituted alkenes in MeOH at room temperature have been determined by laser flash photolysis. Also the absorption spectra of the 2-hydroxy-2-propyl and the benzylic and

Absolute rate constants for the addition
Absolute rate constants for the addition of hydroxymethyl radicals to alkenes in methanol solution
✍ J. Q. Wu; H. Fischer 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 753 KB

Absolute rate constants and their temperature dependencies were determined for the addition of hydroxymethyl radicals ( C H 2 0 H ) to 20 monoor 1,l-disubstituted alkenes (CH2 = C X Y ) in methanol by time-resolved electron spin resonance spectroscopy. With the alkene substituents the rate constants