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Issue 6, 1984
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Spectroscopic studies on adsorbed metal carbonyls. Part 2. Interaction of [Ru3(CO)12] with silica, titania, and alumina

John Evans  and  Gregory S. McNulty 

Abstract

The reactions between [Ru3(CO)12] and SiO2, TiO2, and Al2O3 have been studied by electronic and i.r. spectroscopy using 13C isotopic substitution. The complex [Ru3(µ-H)(CO)10(µ-OSi[triple bond, length half m-dash])] was initially generated on silica, but this oxidised in air to [RuII(CO)2]n(n= 2 or 3) species. Vacuum pyrolysis however generated another [RuII(CO)2]n species where n≃ 1 and some metallic ruthenium. Subsequent heating under CO generated RuIII and RuIV monocarbonyl sites. The initial silica-type supported cluster was not observed on titania and alumina. The initial impregnation reactions generate similar species to the room-temperature air oxidation products on silica. The subsequent chemistry on titania is complex but evidence was obtained for four monocarbonyls on differing ruthenium centres (suggested as RuO, RuII, RuIII, and RuIV) and a bridging carbonyl site.

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Article type: Paper
DOI: 10.1039/DT9840001123
Citation: J. Chem. Soc., Dalton Trans., 1984,0, 1123-1131
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    Spectroscopic studies on adsorbed metal carbonyls. Part 2. Interaction of [Ru3(CO)12] with silica, titania, and alumina

    J. Evans and G. S. McNulty, J. Chem. Soc., Dalton Trans., 1984, 0, 1123
    DOI: 10.1039/DT9840001123

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