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Bistability in palladium complexes with two different redox-active ligands of orthogonal charge regimes

Electronically bistable molecular coordination compounds are obtained by a combination of two different redox-active ligands with orthogonal charge regimes in square-planar palladium complexes. Thereby, the first complexes are obtained in which two redox isomers are interconverted by interligand ele...

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Bibliographic Details
Main Authors: Kreis, Franka (Author) , Poddel'sky, Andrey (Author) , Hammermüller, Leon (Author) , Bootz, Pascal (Author) , Bodenmüller, Franz Anton (Author) , Kaifer, Elisabeth (Author) , Köhn, Andreas (Author) , Himmel, Hans-Jörg (Author)
Format: Article (Journal)
Language:English
Published: 9 December 2025
In: Chemistry - a European journal
Year: 2025, Volume: 31, Issue: 69, Pages: 1-8
ISSN:1521-3765
DOI:10.1002/chem.202503160
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1002/chem.202503160
Verlag, lizenzpflichtig, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/chem.202503160
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Author Notes:Franka Kreis, Andrei Poddelskii, Leon Hammermüller, Pascal Bootz, Franz Bodenmüller, Elisabeth Kaifer, Andreas Köhn, Hans-Jörg Himmel
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Summary:Electronically bistable molecular coordination compounds are obtained by a combination of two different redox-active ligands with orthogonal charge regimes in square-planar palladium complexes. Thereby, the first complexes are obtained in which two redox isomers are interconverted by interligand electron transfer between a catecholato/semiquinonato (dioxolene) ligand and a redox-active guanidine (GFA) ligand. Experiments in alliance with quantum-chemical calculations indicate that the barrier between the two states is relatively small. Due to the significantly different dipole moments of the two redox isomers, the intramolecular electron transfer can be triggered by variations in the solvent polarity. The energy difference between the two redox isomers and thus the ratio of their formation can be tuned by modifications at the dioxolene and GFA ligands.
Item Description:Online veröffentlicht: 9. Dezember 2025
Gesehen am 09.02.2026
Physical Description:Online Resource
ISSN:1521-3765
DOI:10.1002/chem.202503160

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