[B(O₂C₂(CF₃)₄)₂]⁻ ([FPB]⁻): Repurposing This Weakly Coordinating Anion for Solid-State Molecular Organometallic (SMOM) Chemistry

The perfluoropinacol borate-based anion [B(O2C2(CF3)4)2]−, [FPB]–, is developed as a weakly coordinating anion for single-crystal to single-crystal organometallic solid/gas reactivity, resulting in the isolation and characterization (including periodic DFT and IGMH analysis) of the σ-alkane complex [Rh(Cy2PCH2CH2PCy2)(exo-η2η2-norbornane)][FPB]. The synthetically useful solvent-free Na+ salt, Na[FPB], and oxonium acid [H(OEt2)2][FPB] are also reported.