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Hidden Noninnocence: Theoretical and Experimental Evidence for Redox Activity of a β‐Diketiminate(1−) Ligand
Author(s) -
Khusniyarov Marat M.,
Bill Eckhard,
Weyhermüller Thomas,
Bothe Eberhard,
Wieghardt Karl
Publication year - 2011
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.201005953
Subject(s) - ligand (biochemistry) , redox , chemistry , oxidation state , innocence , ion , electron paramagnetic resonance , computer science , crystallography , political science , inorganic chemistry , physics , nuclear magnetic resonance , law , organic chemistry , biochemistry , catalysis , receptor
End of innocence : A β‐diketiminate(1−) ligand, formerly thought to be innocent, is shown to be redox‐active: It can undergo one‐electron oxidation to form a neutral π radical stabilized by coordination to a high‐spin Ni II ion (see scheme). However, since the change in oxidation state of the ligand does not significantly change intraligand bond lengths, its noninnocence is hidden from X‐ray crystallography.