Dibenzo-p-dioxin: Twisted and puckered excited state molecular geometries

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Abstract

The title compound is generally acknowledged to have a planar D2h symmetrical molecular geometry in the ground state S0, and previous theoretical and experimental investigations seem to support the assumption of similar planar geometries in the excited singlet and triplet electronic states, S1 and T1. But a variety of theoretical models predict non-planar equilibrium geometries for these states: In the lowest excited singlet state (S1) a twisted, propeller-like geometry with D2 symmetry is predicted, while a strongly puckered, biradicaloid dienediyl-like structure is predicted for the triplet state (T1).
OriginalsprogEngelsk
Artikelnummer112551
TidsskriftComputational and Theoretical Chemistry
Vol/bind2019
Udgave nummer1164
Antal sider4
ISSN2210-271X
DOI
StatusUdgivet - 15 sep. 2019

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