[Os3(CO)12], [H4Os4(CO)12], [H2Os4(CO)12]2-, [Os5C(CO)14]2-, and [Os10C(CO)24]2- have been synthesized selectively and in high yields by reductive carbonylation or hydrogenation of OsCl3 or α-[Os(CO)3Cl2]2 supported on silica in the presence of alkali carbonates. The selectivity of the reaction is controlled by the choice of (i) the nature and quantity of the alkali carbonate (Na2CO3 or K2CO3) added to silica, (ii) temperature, (iii) reaction time, and (iv) the gas-phase composition (CO, CO + H2, or H2). These surface-mediated syntheses are often more selective and more efficient and usually require less drastic conditions than the best known syntheses in solution, confirming the potential use of the silica surface as a new reaction medium to prepare both neutral and anionic metal carbonyl clusters.

Surface-Mediated Organometallic Synthesis:  High-Yield Preparations of Neutral and Anionic Osmium Carbonyl Clusters by Controlled Reduction of Silica-Supported [Os(CO)3Cl2]2and OsCl3in the Presence of Na2CO3or K2CO3 / D. Roberto, E. Cariati, R. Ugo, R. Psaro. - In: INORGANIC CHEMISTRY. - ISSN 0020-1669. - 35:8(1996), pp. 2311-2316.

Surface-Mediated Organometallic Synthesis:  High-Yield Preparations of Neutral and Anionic Osmium Carbonyl Clusters by Controlled Reduction of Silica-Supported [Os(CO)3Cl2]2and OsCl3in the Presence of Na2CO3or K2CO3

D. Roberto
Primo
;
E. Cariati
Secondo
;
R. Ugo
Penultimo
;
1996

Abstract

[Os3(CO)12], [H4Os4(CO)12], [H2Os4(CO)12]2-, [Os5C(CO)14]2-, and [Os10C(CO)24]2- have been synthesized selectively and in high yields by reductive carbonylation or hydrogenation of OsCl3 or α-[Os(CO)3Cl2]2 supported on silica in the presence of alkali carbonates. The selectivity of the reaction is controlled by the choice of (i) the nature and quantity of the alkali carbonate (Na2CO3 or K2CO3) added to silica, (ii) temperature, (iii) reaction time, and (iv) the gas-phase composition (CO, CO + H2, or H2). These surface-mediated syntheses are often more selective and more efficient and usually require less drastic conditions than the best known syntheses in solution, confirming the potential use of the silica surface as a new reaction medium to prepare both neutral and anionic metal carbonyl clusters.
Settore CHIM/03 - Chimica Generale e Inorganica
Article (author)
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/181067
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 31
  • ???jsp.display-item.citation.isi??? 29
social impact