A Carbone-Stabilized Two-Coordinate Phosphorus(III)-Centered Dication


  • We thank the A*STAR (Grant ID: 1220703062) for funding. We would also like to thank Ee Ling Goh (NTU) and Ian Riddlestone (University of Oxford) for the help with NMR and ESMS, respectively.


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A coordinatively unsaturated dicationic phosphorus compound has been synthesized and characterized (see structure; P pink, N blue, C gray). DFT calculations revealed that the polycation should show superior Lewis acid and σ-donor properties to the corresponding bis(dimethylamino)phosphenium cations. Preliminary investigations with PMe3 confirmed unusual reactivity patterns for the dication.