A chemically non-innocent pyrrole-based ONO3- trianionic pincer ligand within [pyr-ONO]TiCl(THF)2 can access the dianionic [3H-pyr-ONO]TiCl2(THF) and monoanionic {[3H,4H-pyr-ONO]TiCl2(OEt2)}{B(3,5-(CF3)2C6H3)4} states via remote protonation of the pyrrole γ-C π-bonds. The homoleptic [3H-pyr-ONO]2Zr was synthesized and characterized by X-ray diffraction and solution NMR techniques. Demonstrating the storage of three protons, protonation of with [H(OEt2)2][B(C6H3(CF3)2)4] yields {[3H,4H-pyr-ONO][3H-pyr-ONO]Zr}{B(3,5-(CF3)2C6H3)4}.

Remote multi-proton storage within a pyrrolide-pincer type ligand

251st National Meeting (2016)

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