Thermal Decomposition of the Complex [tBu₃PH][HB(C₆F₅)₃]

The thermal stability of the [tBu₃PH][HB(C₆F₅)₃] complex, which is a product of molecular hydrogen activation by the tBu₃P·B(C₆F₅)₃ frustrated Lewis pair (FLP), was studied using a static tensimetric method with a membrane null-manometer. It was found that heating [tBu₃PH][HB(C₆F₅)₃] to temperatures above 430 K is accompanied by thermal dissociation with passing into vapor of molecular hydrogen, pentafluorobenzene, and 2-methylpropene, as the main volatile products.