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Metal-Ligand-Anion Cooperation in C-H Bond Formation at Platinum(II).

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Thermolysis of [H(BPI)Pt(CH3)][OTf] (BPI = 1,3-bis(2-(4-tert-butyl)pyridylimino)isoindole) to release methane and form (BPI)Pt(OTf) is reported. Kinetic, mechanistic, and computational studies point to an unusual anion-assisted pathway that obviates the need for… Click to show full abstract

Thermolysis of [H(BPI)Pt(CH3)][OTf] (BPI = 1,3-bis(2-(4-tert-butyl)pyridylimino)isoindole) to release methane and form (BPI)Pt(OTf) is reported. Kinetic, mechanistic, and computational studies point to an unusual anion-assisted pathway that obviates the need for a higher oxidation state intermediate to couple the metal-bound methyl group with the ligand-bound hydrogen. Leveraging this insight, a triflimide derivative of the (BPI)Pt complex was shown to activate benzene, highlighting the role of the counteranion in controlling the activity of these complexes.

Keywords: bpi; anion cooperation; ligand anion; anion; metal ligand

Journal Title: Journal of the American Chemical Society
Year Published: 2022

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