The synthesis of heteronuclear clusters containing cyclopentadienyl- or pentamethylcyclopentadienyliridium and ruthenium or osmium

Padmamalini Srinivasan; Weng Kee Leong

doi:10.1016/j.jorganchem.2005.09.007

The synthesis of heteronuclear clusters containing cyclopentadienyl- or pentamethylcyclopentadienyliridium and ruthenium or osmium

Padmamalini Srinivasan, Weng Kee Leong^*

^*Corresponding author for this work

National University of Singapore

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

The reaction of Cp*Ir(CO)₂ or CpIr(CO)₂ with Ru₃(CO)₁₂ under a hydrogen atmosphere afforded the heterometallic clusters Cp*IrRu₃(μ-H)₂(CO) ₁₀ and CpIrRu₃(μ-H)₂(CO)₁₀, respectively, in moderate yields. In the former reaction, the tetrahydrido cluster Cp*IrRu₃(μ-H)₄(CO)₉ was also formed in trace amounts, although this cluster can be obtained in high yields by the hydrogenation of Cp*IrRu₃(μ-H)₂(CO) ₁₀; the Cp analogue was not obtainable. The reaction of Os ₃(μ-H)₂(CO)₁₀ with Cp*Ir(CO) ₂ afforded the osmium analogue Cp*IrOs₃(μ-H) ₂(CO)₁₀ in 70% yield, along with a trace amount of the pentanuclear cluster Cp*IrOs₄(μ-H)₂(CO) ₁₃. Hydrogenation of Cp*IrOs₃(μ-H) ₂(CO)₁₀ afforded Cp*IrOs₃(μ-H) ₄(CO)₉ in excellent yield. The reaction of Cp*Ir(CO)₂ with Os₃(CO)₁₀(CH ₃CN)₂ afforded the known trinuclear cluster Cp*IrOs₂(CO)₉ and the novel cluster Cp*IrOs₃(CO)₁₁. Solution-state NMR studies show that the hydrides in the iridium-ruthenium clusters are highly fluxional even at low temperatures while those in the iridium-osmium clusters are less so.

Original language	English
Pages (from-to)	403-412
Number of pages	10
Journal	Journal of Organometallic Chemistry
Volume	691
Issue number	3
DOIs	https://doi.org/10.1016/j.jorganchem.2005.09.007
Publication status	Published - Jan 15 2006
Externally published	Yes

ASJC Scopus Subject Areas

Biochemistry
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Materials Chemistry

Keywords

Cluster
Cyclopentadienyl
Fluxional
Heteronuclear
Iridium
Osmium
Ruthenium

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10.1016/j.jorganchem.2005.09.007

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@article{d4f8003ce1494e659ba268940a1fbf1e,

title = "The synthesis of heteronuclear clusters containing cyclopentadienyl- or pentamethylcyclopentadienyliridium and ruthenium or osmium",

abstract = "The reaction of Cp*Ir(CO)2 or CpIr(CO)2 with Ru3(CO)12 under a hydrogen atmosphere afforded the heterometallic clusters Cp*IrRu3(μ-H)2(CO) 10 and CpIrRu3(μ-H)2(CO)10, respectively, in moderate yields. In the former reaction, the tetrahydrido cluster Cp*IrRu3(μ-H)4(CO)9 was also formed in trace amounts, although this cluster can be obtained in high yields by the hydrogenation of Cp*IrRu3(μ-H)2(CO) 10; the Cp analogue was not obtainable. The reaction of Os 3(μ-H)2(CO)10 with Cp*Ir(CO) 2 afforded the osmium analogue Cp*IrOs3(μ-H) 2(CO)10 in 70% yield, along with a trace amount of the pentanuclear cluster Cp*IrOs4(μ-H)2(CO) 13. Hydrogenation of Cp*IrOs3(μ-H) 2(CO)10 afforded Cp*IrOs3(μ-H) 4(CO)9 in excellent yield. The reaction of Cp*Ir(CO)2 with Os3(CO)10(CH 3CN)2 afforded the known trinuclear cluster Cp*IrOs2(CO)9 and the novel cluster Cp*IrOs3(CO)11. Solution-state NMR studies show that the hydrides in the iridium-ruthenium clusters are highly fluxional even at low temperatures while those in the iridium-osmium clusters are less so.",

keywords = "Cluster, Cyclopentadienyl, Fluxional, Heteronuclear, Iridium, Osmium, Ruthenium",

author = "Padmamalini Srinivasan and Leong, {Weng Kee}",

year = "2006",

month = jan,

day = "15",

doi = "10.1016/j.jorganchem.2005.09.007",

language = "English",

volume = "691",

pages = "403--412",

journal = "Journal of Organometallic Chemistry",

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T1 - The synthesis of heteronuclear clusters containing cyclopentadienyl- or pentamethylcyclopentadienyliridium and ruthenium or osmium

AU - Srinivasan, Padmamalini

AU - Leong, Weng Kee

PY - 2006/1/15

Y1 - 2006/1/15

N2 - The reaction of Cp*Ir(CO)2 or CpIr(CO)2 with Ru3(CO)12 under a hydrogen atmosphere afforded the heterometallic clusters Cp*IrRu3(μ-H)2(CO) 10 and CpIrRu3(μ-H)2(CO)10, respectively, in moderate yields. In the former reaction, the tetrahydrido cluster Cp*IrRu3(μ-H)4(CO)9 was also formed in trace amounts, although this cluster can be obtained in high yields by the hydrogenation of Cp*IrRu3(μ-H)2(CO) 10; the Cp analogue was not obtainable. The reaction of Os 3(μ-H)2(CO)10 with Cp*Ir(CO) 2 afforded the osmium analogue Cp*IrOs3(μ-H) 2(CO)10 in 70% yield, along with a trace amount of the pentanuclear cluster Cp*IrOs4(μ-H)2(CO) 13. Hydrogenation of Cp*IrOs3(μ-H) 2(CO)10 afforded Cp*IrOs3(μ-H) 4(CO)9 in excellent yield. The reaction of Cp*Ir(CO)2 with Os3(CO)10(CH 3CN)2 afforded the known trinuclear cluster Cp*IrOs2(CO)9 and the novel cluster Cp*IrOs3(CO)11. Solution-state NMR studies show that the hydrides in the iridium-ruthenium clusters are highly fluxional even at low temperatures while those in the iridium-osmium clusters are less so.

AB - The reaction of Cp*Ir(CO)2 or CpIr(CO)2 with Ru3(CO)12 under a hydrogen atmosphere afforded the heterometallic clusters Cp*IrRu3(μ-H)2(CO) 10 and CpIrRu3(μ-H)2(CO)10, respectively, in moderate yields. In the former reaction, the tetrahydrido cluster Cp*IrRu3(μ-H)4(CO)9 was also formed in trace amounts, although this cluster can be obtained in high yields by the hydrogenation of Cp*IrRu3(μ-H)2(CO) 10; the Cp analogue was not obtainable. The reaction of Os 3(μ-H)2(CO)10 with Cp*Ir(CO) 2 afforded the osmium analogue Cp*IrOs3(μ-H) 2(CO)10 in 70% yield, along with a trace amount of the pentanuclear cluster Cp*IrOs4(μ-H)2(CO) 13. Hydrogenation of Cp*IrOs3(μ-H) 2(CO)10 afforded Cp*IrOs3(μ-H) 4(CO)9 in excellent yield. The reaction of Cp*Ir(CO)2 with Os3(CO)10(CH 3CN)2 afforded the known trinuclear cluster Cp*IrOs2(CO)9 and the novel cluster Cp*IrOs3(CO)11. Solution-state NMR studies show that the hydrides in the iridium-ruthenium clusters are highly fluxional even at low temperatures while those in the iridium-osmium clusters are less so.

KW - Cluster

KW - Cyclopentadienyl

KW - Fluxional

KW - Heteronuclear

KW - Iridium

KW - Osmium

KW - Ruthenium

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U2 - 10.1016/j.jorganchem.2005.09.007

DO - 10.1016/j.jorganchem.2005.09.007

M3 - Article

AN - SCOPUS:29344467380

SN - 0022-328X

VL - 691

SP - 403

EP - 412

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

IS - 3

ER -

The synthesis of heteronuclear clusters containing cyclopentadienyl- or pentamethylcyclopentadienyliridium and ruthenium or osmium

Abstract

ASJC Scopus Subject Areas

Keywords

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