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.