F + H2, D2, HD reactions: Chemical laser determination of the product vibrational state populations and the F + HD intramolecular kinetic isotope effect

1973 ◽  
Vol 59 (12) ◽  
pp. 6229-6253 ◽  
Author(s):  
Michael J. Berry
Keyword(s):  
Isotope Effect ◽  
Vibrational State ◽  
Kinetic Isotope Effect ◽  
Chemical Laser ◽  
Kinetic Isotope

Method of determination of the kinetic isotope effect in a mixture of reacting isotopomers

2012 ◽  
Vol 48 (3) ◽  
pp. 157-162 ◽  
Author(s):  
R. S. Mitchenko ◽  
T. V. Krasnyakova ◽  
I. V. Zhikharev ◽  
S. A. Mitchenko
Keyword(s):  
Isotope Effect ◽  
Kinetic Isotope Effect ◽  
Kinetic Isotope ◽  
Method Of Determination

The Determination of the Preferred Stereochemistry and the Magnitude of the Hydrogen Isotope Effect for 1,3 Elimination in the Locked Norbornyl System Methyl exo-2-Bromo-1-norbornanecarboxylate-endo, endo-5,6-d2

1975 ◽  
Vol 53 (1) ◽  
pp. 26-40 ◽  
Author(s):  
Nick Henry Werstiuk
Keyword(s):  
Isotope Effect ◽  
Hydrogen Isotope ◽  
Kinetic Isotope Effect ◽  
Front Face ◽  
Elimination Kinetic ◽  
Kinetic Isotope ◽  
Hydrogen Isotope Effect

Methyl exo-2-bromo-1-norobornanecarboxylate-endo,endo-5,6-d2 (1b) has been prepared and solvolyzed at 112° in 80:20 EtOH-H2O buffered with NaOAc. The loss of 85–90% of the deuterium available on the front face of 1b in the formation of the tricyclic ester 6D coupled with a novel analysis established that the endo:exo preference for 1,3 elimination is at least 15:1 to 20:1. A comparison of the solvolytic kinetic isotope effect (1.18 ± 0.04) for 1b and the 1,3-elimination kinetic isotope effect (1.45–1.6) with data for 1,2 eliminations indicates that elimination occurs from the classical, perhaps 1,3 hyperconjugatively stabilized carbocation 20. The endo:exo preference established in this study is used to reinterpret 1,3-elimination data determined by Collins in the solvolysis of deuteriohydroxyphenyl norbornyl tosylates.

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