Abstract
The photoisomerization about the α-β and γ-δ double bonds and the electrocyclic ring-closure reaction are competing processes in the excited singlet state of phenylfulgides and heterocyclic fulgides. Own experimental results and data given in the literature are interpreted in terms of π-bond orders and free-valence indices for the bond forming atoms in the S 1 state calculated by a Pariser-Parr-Pople method.
Published Version
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