Direct Measurement of Ultrafast Carbon−Carbon Cleavage Rates via the Subpicosecond Charge-Transfer Activation of Pinacols
作者:T. M. Bockman、S. M. Hubig、J. K. Kochi
DOI:10.1021/ja980097d
日期:1998.7.1
Highly transient (benzpinacol) cation radicals (D2+•) and their ultrafast mesolytic fragmentations to the diarylhydroxymethyl radical (D•) and cation (D+) are directly observed on the early picosecond time scale upon the charge-transfer photoactivation of the intermolecular donor−acceptor complexes of pinacol donors with methyl viologen. Ultrashort lifetimes of the cation radicals with τ ≈ 10 ps obtain