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Dinuclear Zn Complex: Phenoxyl Radical Formation Driven by Superoxide Coordination
Author(s) -
Squarcina Andrea,
Fehn Dominik,
Senft Laura,
Langer Jens,
IvanovićBurmazović Ivana
Publication year - 2021
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.202000468
Subject(s) - superoxide , chemistry , electron paramagnetic resonance , anhydrous , photochemistry , zinc , superoxide radical , phenol , medicinal chemistry , organic chemistry , enzyme , physics , nuclear magnetic resonance
The dinuclear zinc complex Zn 2 L 2 (HL=2‐{[[di(2‐pyridyl)methyl](methyl)amino]methyl}phenol) has been synthesized and isolated as colorless crystals. The interaction of the compound with superoxide in anhydrous organic solvents has been evaluated by CV, stopped‐flow Uv‐vis, EPR and ESI‐MS suggesting the binding and the activation of the coordinated superoxide, thanks to the Lewis acidity of the Zn(II) centers. The results obtained in this study highlight the formation of a Zn 2 L 2 −O 2 . − intermediate and a metastable phenoxyl‐radical driven by the coordinated superoxide.