hydrogen in tetrahydrofuran; toluene byproducts: benzene, ethane; inert atmosphere; autoclave with Ir-complex evacuation, solvent addn. (suction), H2 addn. up to 2.5 atm, autoclave heating at 150°C for 2 h, mixt. cooling at room temp.; solvent distn. (red. pressure), BPh3 sepn. by sublimation (70°C, 0.5 Torr), Ir-complex identification by NMR and IR spectroscopy;