The inverted singlet–triplet gap: a vanishing myth?

Molecules with an inverted singlet–triplet gap (STG) between the first excited singlet and triplet states, for example, heptazine, have recently been reported and gained substantial attention since they violate the famous Hund’s rule. Utilizing state-of-the-art high-level ab initio methods, the sing...

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Bibliographic Details
Main Authors: Andreas Dreuw, Marvin Hoffmann
Format: Article
Language:English
Published: Frontiers Media S.A. 2023-07-01
Series:Frontiers in Chemistry
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fchem.2023.1239604/full