Singlet diradical character from experiment

Kenji Kamada, Koji Ohta, Akihiro Shimizu, Takashi Kubo, Ryohei Kishi, Hideaki Takahashi, Edith Botek, Benoît Champagne, Masayoshi Nakano

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Understanding the electronic structure of the singlet diradical state tackles the fundamentals of the chemical bond itself. The singlet diradical character is a key factor, which determines the chemical reactivity, the reaction products, as well as the chemical/physical (electronic, optical and magnetic) properties, although this quantity is defined in a purely theoretical manner. In this Letter, on the basis of the valence configuration interaction scheme, we present an explicit connection between the singlet diradical character and measured quantities obtained from one-and two-photon absorption spectra as well as from phosphorescence and electron spin resonance peaks. This enables us to estimate the singlet diradical character experimentally.

langue originaleAnglais
Pages (de - à)937-940
Nombre de pages4
journalJournal of Physical Chemistry Letters
Numéro de publication6
Les DOIs
Etat de la publicationPublié - 18 mars 2010

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