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Digitale Medien

Rate constants for the addition of the 2-hydroxy-2-propyl radical to alkenes in solution (1993)

Héberger, K. ; Fischer, H.

New York, NY : Wiley-Blackwell

International Journal of Chemical Kinetics 25 (1993), S. 913-920

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Details

ISSN: 0538-8066

Schlagwort(e): Chemistry ; Physical Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Absolute rate constants for the addition of the 2-hydroxy-2-propyl radical to 18 substituted alkenes (CH2 = CXY) were determined at (296 ± 1) K in 2-propanol by time-resolved electronspin-resonance spectroscopy. With alkene substitution the rate constants vary by more than 6 orders of magnitude. For 3,3-dimethyl-but-1-ene the temperature dependence is given by log k/M-1 · s-1 = 6.4 minus;; 19.1/Θ where Θ = 2.303 RT in kJ/mol-1. As shown by a good correlation with the alkene electron affinities, log k296/M-1 · s-1 = 6.46 + 1.71 · EA/eV (r = 0.930), 2-hydroxy-2-propyl is a very nucleophilic radical, and its addition rates are highly governed by polar effects. © 1993 John Wiley & Sons, Inc.

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/kin.550251105

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