Remote Multiproton Storage within a Pyrrolide‐Pincer‐Type Ligand |
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| Authors: | Soufiane S Nadif Dr Matthew E O'Reilly Dr Ion Ghiviriga Dr Khalil A Abboud Prof Adam S Veige |
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| Institution: | University of Florida, Center for Catalysis, P.O. Box 117200 (USA) https://veige.chem.ufl.edu/ |
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| Abstract: | A chemically non‐innocent pyrrole‐based trianionic (ONO)3? pincer ligand within (pyr‐ONO)TiCl(thf)2] ( 2 ) can access the dianionic (3H‐pyr‐ONO)TiCl2(thf)] ( 1‐THF ) and monoanionic (3H,4H‐pyr‐ONO)TiCl2(OEt2)]B{3,5‐(CF3)2C6H3}4] ( 3‐Et2O ) states through remote protonation of the pyrrole γ‐C π‐bonds. The homoleptic (3H‐pyr‐ONO)2Zr] ( 4 ) was synthesized and characterized by X‐ray diffraction and NMR spectroscopy in solution. The protonation of 4 by H(OEt2)2]B{C6H3(CF3)2}4] yields (3H,4H‐pyr‐ONO)(3H‐pyr‐ONO)Zr]B{3,5‐(CF3)2C6H3}4] ( 5 ), thus demonstrating the storage of three protons. |
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| Keywords: | N O ligands proton storage protonation redox chemistry titanium |
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