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Front Cover: Complexes of d‐ and f‐metal Ions with a Redox‐Active and Highly Symmetric Truxenone Ligand: Effect of Cations and Coordination on Distortions of Radical Anions and Singlet‐Triplet Transitions in Dianions (Eur. J. Inorg. Chem. 14/2025)
Author(s) -
Krivenko Kira D.,
Shestakov Alexander F.,
Faraonov Maxim A.,
Kuzmin Alexey V.,
Khasanov Salavat S.,
Otsuka Akihiro,
Yamochi Hideki,
Kitagawa Hiroshi,
Konarev Dmitri V.
Publication year - 2025
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202581401
The Front Cover shows truxenone (Tr), which has high C 3h symmetry and degenerated LUMO. It forms salts and complexes. Calculations predict Jahn–Teller distortions for Tr ⋅− that are enhanced by the asymmetric approach of Cp* 2 Co + to Tr ⋅− . The dianions should have a triplet state, but the asymmetric approach of Cs + to the oxygen atoms of Tr 2− stabilizes the singlet ground state. Radical anions of Tr ⋅− coordinate with Tb III (TMHD) 3 and Mn II (acac) 2 providing asymmetric spin density localization on the coordinated oxygen atom and strong magnetic exchange of the ligand and paramagnetic metal spins. More information can be found in the Research Article by D. V. Konarev and co‐workers (DOI: 10.1002/ejic.202400760 ).