[Ir6(CO)16] is deposited on silica from a solution as large crystallites. By heating under Ar at 100°C, a disaggregation of the crystallites occurs followed by conversion of the original [Ir6(CO)16] cluster to [Ir4(CO)12] and metal particles covered by CO. Treatment of these metal particles first with O2 and then with CO at 100°C affords [Ir4(CO)12], thus allowing a high conversion of [Ir6(CO)16] into [Ir4(CO)12]. More directly, [Ir6(CO)16] on silica may be converted to [Ir4(CO)12] by successive treatments under O2 and CO at 100°C. The formation of [Ir4(CO)12] from [Ir6(CO)16] supported on silica is inhibited by CO.

Surface organometallic chemistry: the easy conversion of [Ir6(CO)16] supported on silica into [Ir4(CO)12] / D. Roberto, E. Cariati, R. Psaro, R. Ugo. - In: JOURNAL OF ORGANOMETALLIC CHEMISTRY. - ISSN 0022-328X. - 488:1-2(1995), pp. 109-114.

Surface organometallic chemistry: the easy conversion of [Ir6(CO)16] supported on silica into [Ir4(CO)12]

D. Roberto
Primo
;
E. Cariati
Secondo
;
R. Ugo
Ultimo
1995

Abstract

[Ir6(CO)16] is deposited on silica from a solution as large crystallites. By heating under Ar at 100°C, a disaggregation of the crystallites occurs followed by conversion of the original [Ir6(CO)16] cluster to [Ir4(CO)12] and metal particles covered by CO. Treatment of these metal particles first with O2 and then with CO at 100°C affords [Ir4(CO)12], thus allowing a high conversion of [Ir6(CO)16] into [Ir4(CO)12]. More directly, [Ir6(CO)16] on silica may be converted to [Ir4(CO)12] by successive treatments under O2 and CO at 100°C. The formation of [Ir4(CO)12] from [Ir6(CO)16] supported on silica is inhibited by CO.
Carbonyl clusters; Iridium; Supported clusters
Settore CHIM/03 - Chimica Generale e Inorganica
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/181052
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