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Evidence for quantization of the transition state for cis–trans isomerization
1994
Journal of Chemical Physics
Preserved Fulltext
Cis-trans isomerization rates of trans,trans-1,3,5,7-octatetraene (OT) on the first excited singlet state (2 'A,) potential surface have been obtained as a function of vibrational energy by measuring the fluorescence lifetimes. A stepwise increase in the isomerization rate with increasing energy has been observed, which indicates quantization of the vibrational levels of the transition state for the cis-trans isomerization of a double bond. The energy spacing of 80? 10 cm-' between the first
doi:10.1063/1.466680
fatcat:fcv2rhdbrnf3dkwsrpwdx6oka4