[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. [10.1016/0022-328X(94)00010-A]
Surface organometallic chemistry: the easy conversion of [Ir6(CO)16] supported on silica into [Ir4(CO)12]
D. RobertoPrimo
;E. CariatiSecondo
;R. UgoUltimo
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.Pubblicazioni consigliate
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