Observations of different triplet conformations in time-resolved infrared spectra of alkyl phenylglyoxylates.
Two different conformations of the triplet state of alkyl phenylglyoxylates were observed by means of time-resolved step-scan FT-IR spectroscopy. The amplitude of the peak corresponding to the sterically hindered conformation decreases as the size of the alkyl group increases. Both conformations exhibit similar reactivity in intermolecular hydrogen abstraction, but only one of them undergoes Norrish Type II photoelimination.
Merzlikine
Alexei G
AG
Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, USA.
Voskresensky
Sergey V
SV
Danilov
Eugene O
EO
Rodgers
Michael A J
MA
Neckers
Douglas C
DC