1,3-Zwitterions consisting of a phosphonium cation linked to a silicate centre through a one-atom bridge, X3P–E–SiY4 (3), are computationally studied. Their phosphonium acidic group together with a Lewis base constitute a frustrated Lewis pair (FLP) in the activation of H2, with the silicate side-arm providing Coulombic stabilization to the positive charge at the Lewis base.
A. Rey Planells, A. Espinosa Ferao, R. Streubel and A. Frontera, New J. Chem., 2024, 48, 4675 DOI: 10.1039/D4NJ00523F
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