Reversible Metal-Free Carbon Dioxide Binding by Frustrated Lewis Pairs


  • Financial support from the Fonds der Chemischen Industrie and a gift of solvents from BASF is gratefully acknowledged by S.G. and G.E. E.O. is grateful for the support of a Netherlands Organisation for Scientific Research (NWO) postdoctoral fellowship. D.W.S. is grateful for the financial support of NSERC of Canada and the award of a Canada Research Chair.


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Hot and bothered? Frustrated Lewis pairs comprising phosphine and borane react to reversibly bind and release CO2, offering a rare example of metal-free CO2 sequestration. The mechanism of formation of these CO2 derivatives 1 and 2 (see scheme) by almost simultaneous P[BOND]C and O[BOND]B bond formation was characterized by quantum chemical calculations.