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

## TL;DR

This paper explores a new use for a specific anion in solid-state chemistry to create and study a unique organometallic complex.

## Contribution

The paper introduces a new application of the [FPB]− anion in solid-state molecular organometallic chemistry.

## Key findings

- A σ-alkane complex was isolated and characterized using [FPB]−.
- Na+[FPB]− and [H(OEt2)2][FPB] were synthesized and reported.
- Periodic DFT and IGMH analysis supported the structural characterization.

## Abstract

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.