Thermal stability study of the bridging CO2 complex, [tBu3P-(μ-CO2)-B(C6F5)3]

The thermal stability of [tBu3P-(μ-CO2)-B(C6F5)3], a bridging CO2 complex of the bulky Lewis acid–base pair PtBu3 and B(C6F5)3, was studied. This complex was found to retain its complexed CO2 after 14 weeks in air at ambient temperatures, and for 7 weeks under vacuum. The thermal loss of CO2 from the complex occurs at approximately 150 °C in inert atmosphere, suggesting that this compound may have potential for long-term gaseous CO2 storage.