Tripyrrindione as a Redox‐Active Ligand: Palladium(II) Coordination in Three Redox States
作者： Ritika Gautam , Jonathan J. Loughrey , Andrei V. Astashkin , Jason Shearer , Elisa Tomat
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摘要: The tripyrrin-1,14-dione scaffold of urinary pigment uroerythrin coordinates divalent palladium as a planar tridentate ligand. Spectroscopic, structural and computational investigations reveal that the tripyrrindione ligand binds dianionic radical, resulting complex is stable at room temperature. One-electron oxidation reduction reactions do not alter coordination sphere palladium(II) lead to isolation two additional complexes presenting different redox states framework. Unaffected by stability problems common tripyrrolic fragments, offers robust platform for ligand-based chemistry.
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