https://doi.org/10.1351/goldbook.PT07447
Molecular structure where the excited-state reactant or intermediate is delivered to the ground state to initiate product formation.
Note:
For a broad class of organic reactions, the structure of the funnel can take the form of a conical intersection or a singlet–triplet crossing.
For a broad class of organic reactions, the structure of the funnel can take the form of a conical intersection or a singlet–triplet crossing.