The photodissociation dynamics of o-, m- and p-bromotoluene in the gas phase studied with femtosecond pump–probe spectroscopy
作者： M. Kadi , E. Ivarsson , J. Davidsson
DOI: 10.1016/J.CPLETT.2003.12.006
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摘要: Abstract The photodissociation dynamics of o -, m - and p -bromotoluene in the gas phase following excitation at 270 nm have been investigated employing femtosecond pump–probe spectroscopy. initially excited S 1 (π,π * ) state is predissociative via either repulsive 3 ( n , σ or high vibrational levels 0 state. lifetimes states bromotoluene isomers are found to be shorter than bromobenzene, which attributed an increased density coupled introduced by internal rotation methyl group. In dissociation process faster other two isomers, we ascribe a higher number rotational available for coupling.
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