In situ synthesis of [HRu3(CO)11]− on the surface of hydroxylated aluminum oxide

The in situ synthesis of supported [HR3(CO)11]− on hydroxylated aluminum oxide from a mononuclear precursor is demonstrated. It is shown by infrared spectroscopy, reaction stoichiometry, and analysis of extracted products that adsorption of Ru(CO)3Cl2(THF) onto CATAPAL SB alumina gives initially RuII(CO)3(ads) which reacts further with CO to give the supported cluster anion, [HRu3(CO)11]−(ads), rapidly at 25°C.