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Inside Back Cover: A Valence Tautomeric Dinuclear Copper Tetrakisguanidine Complex (Chem. Eur. J. 30/2016)
Author(s) -
Wiesner Sven,
Wagner Arne,
Kaifer Elisabeth,
Himmel HansJörg
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201602877
Subject(s) - tautomer , chemistry , intramolecular force , valence (chemistry) , diamagnetism , copper , crystallography , electron transfer , ligand (biochemistry) , stereochemistry , photochemistry , organic chemistry , biochemistry , physics , receptor , quantum mechanics , magnetic field
Valence‐tautomeric dinuclear copper complexes are realized with a bridging redox‐active tetrakisguanidine (GFA) ligand. It is shown that intramolecular electron‐transfer converts a paramagnetic dinuclear Cu II complex with neutral ligand to a diamagnetic dinuclear Cu I complex with dicationic ligand. The electronic structure of the complex is very sensitive to the environment, especially the solvent polarity. In acetone, the two valence‐tautomers are in a temperature‐dependent equilibrium. More information can be found in the Full Paper by H.‐J. Himmel et al. on page 10438 ff.