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A Spiro‐Fused Triarylaminium Radical Cation with a Triplet Ground State
Author(s) -
Ito Akihiro,
Urabe Masashi,
Tanaka Kazuyoshi
Publication year - 2003
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200390244
Subject(s) - dication , diradical , radical ion , chemistry , ground state , radical , photochemistry , triplet state , quantum chemical , ferromagnetism , magnetic susceptibility , computational chemistry , ion , molecule , excited state , crystallography , atomic physics , singlet state , physics , condensed matter physics , organic chemistry
Novel spirobis(radical cation) 1 2+ was prepared to examine the magnetic interaction between the two radical centers. The dication 1 2+ was found to be a robust triplet diradical on the basis of the ESR spectrum, magnetic susceptibility measurements, which indicated ferromagnetic interaction between the radical centers (i.e., J >0), and quantum chemical calculations.