rate of C12-H bond cleavage versus C14-H bond

Value 1.5 times faster
Organism Generic
Reference Molecular Driving Forces: Statistical Thermodynamics in CHemistry,Biology, Ken A. Dill, Routledge, 2002, pp. 353
Comments the lower mass isotope is faster. this is the primary kinetic isotope effect. results from the effective mass for the higher isotope bein larger and thus the lowest energy being lower which then requires higher activation energy for bond cleavage. refers to room temperature
Entered by Ron Milo - Admin
ID 101515