Dinuclear Zn Complex: Phenoxyl Radical Formation Driven by Superoxide Coordination. Issue 8 (28th April 2021)

• Record Type: Journal Article
• Authors: Squarcina, Andrea; Fehn, Dominik; Senft, Laura; Langer, Jens; Ivanović‐Burmazović, Ivana
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 647:Issue 8(2021)
• Page Start: 809
• Page End: 814
• Publication Date: 2021-04-28
• Subjects: superoxide -- zinc complex -- phenoxyl radical -- Lewis acid -- electron transfer; Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.202000468
• Languages: English
• ISSNs: 0044-2313

Abstract

Abstract: The dinuclear zinc complex Zn2 L2 (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 Zn2 L2 −O2 .− intermediate and a metastable phenoxyl‐radical driven by the coordinated superoxide. Abstract :