Photochemical Ring-Opening Reaction of 1,3-Cyclohexadiene: Identifying the True Reactive State

Resent pump-probe experiments performed at LDM/FERMI, have confirmed the fact that time-resolved photoemission spectra can be obtained with resolution high enough to precisely characterize ionization from electronic states even if they are weak and/or close in energy. O.Travnikova et al. JACS, 144, 2178 (2022).
The photochemically induced ring-opening isomerization reaction of 1,3-cyclohexadiene to 1,3,5-hexatriene is a textbook example of a pericyclic reaction and has been amply investigated with advanced spectroscopic techniques. The main open question has been the identification of the single reactive state which drives the process. Here, in a joint experimental and computational effort, we have demonstrate that the evolution of the excitation–deexcitation process is much more complex than that usually described.
 

Retrieve article
O.Travnikova, T. Piteša, A. Ponzi, M. Sapunar, R.J.Squibb, R. Richter, P. Finetti, M. Di Fraia, A. De Fanis, N. Mahne, M. Manfredda, V. Zhaunerchyk, T. Marchenko, R. Guillemin, L. Journel, K.C. Prince, C. Callegari, M. Simon, R. Feifel, P. Decleva, N. Došlić, M.N. Piancastelli. Journal of the American Chemical Society, Vol. 144 - 48, pp.21878-21886 (2022) DOI: 10.1021/jacs.2c06296
Ultima modifica il Mercoledì, 28 Dicembre 2022 11:57