Surface supported metal cluster carbonyls. the surface organometallic chemistry of polymetallic and monometallic osmium carbonyl species formed by depositing various osmium clusters on silica and alumina

A. K. Smith*, B. Besson, J. M. Basset, R. Psaro, A. Fusi, R. Ugo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

78 Scopus citations

Abstract

On highly hydroxylated silica, Os3(CO)12, H2Os3(CO)10 or Os6(CO)18 are simply physisorbed at room temperature. At 150°C there is an oxidative addition of the surface SiOH group to the OsOs bond of Os3(CO)12 with formation of the surface species: HOs3(CO)10(OSi). Such a structure was confirmed by the synthesis of the model compound HOs3(CO)10(OSi Ph3). When the physisorbed clusters Os3(CO)12, H2Os3(CO)10, Os6(CO)18 or the chemisorbed clusters HOs3(CO)10(OSi{A figure is presented}), are heated at 200°C, a breakdown of the cluster frame occurs, with formation of osmium(II) carbonyl species of the type [Os(CO)2 (OSi{A figure is presented})2]n or [Os(CO)3(OSi{A figure is presented})2]2. Similar reactions are observed on alumina.

Original languageEnglish (US)
JournalJournal of Organometallic Chemistry
Volume192
Issue number2
DOIs
StatePublished - Jun 17 1980
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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