Reaction of the heteronuclear cluster [Cp*IrRu3(μ-H) 2(CO)10] with alkynes: Stereoselective binding

Padmamalini Srinivasan; Kee Leong Weng

doi:10.1002/ejic.200500830

Reaction of the heteronuclear cluster [Cp*IrRu₃(μ-H) ₂(CO)₁₀] with alkynes: Stereoselective binding

Padmamalini Srinivasan, Kee Leong Weng^*

^*Corresponding author for this work

National University of Singapore

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

8 Citations (Scopus)

Abstract

The reaction of the heteronuclear cluster [Cp*IrRu ₃(μ-H)₂-(CO)₁₀] (1) with the symmetrical alkynes RCCR (R = Ph, Et) afforded the butterfly clusters [Cp*IrRu ₃(CO)₉(RCCR)] (2) and the trinuclear clusters [Cp*IrRu₂(CO)₇(RCCR)] (3) and [Ru ₃(CO)₈(C₄R₄)] (4). The clusters 2 and 3 have the alkyne aligned parallel to an Ru-Ir bond. The reaction of 1 with unsymmetrical alkynes also afforded stereoselective binding of the alkyne such that the bulkier substituent was pointing away from the Cp*Ir moiety; with PhCCH, however, all three stereoisomers were obtained. With the bis-silylated alkynes (R = SiMe₃, SiEt₃), loss of one trialkylsilyl group occurred to give [Cp*IrRu₃(CO)₉(HCCR)] and [Ru₃(CO)₉(μ-H)(CCR)] (5).

Original language	English
Pages (from-to)	464-472
Number of pages	9
Journal	European Journal of Inorganic Chemistry
Issue number	2
DOIs	https://doi.org/10.1002/ejic.200500830
Publication status	Published - Jan 23 2006
Externally published	Yes

ASJC Scopus Subject Areas

Inorganic Chemistry

Keywords

Alkynes
Heterometallic complexes
Iridium
Ruthenium
Stereoselectivity

Access to Document

10.1002/ejic.200500830

Cite this

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title = "Reaction of the heteronuclear cluster [Cp*IrRu3(μ-H) 2(CO)10] with alkynes: Stereoselective binding",

abstract = "The reaction of the heteronuclear cluster [Cp*IrRu 3(μ-H)2-(CO)10] (1) with the symmetrical alkynes RCCR (R = Ph, Et) afforded the butterfly clusters [Cp*IrRu 3(CO)9(RCCR)] (2) and the trinuclear clusters [Cp*IrRu2(CO)7(RCCR)] (3) and [Ru 3(CO)8(C4R4)] (4). The clusters 2 and 3 have the alkyne aligned parallel to an Ru-Ir bond. The reaction of 1 with unsymmetrical alkynes also afforded stereoselective binding of the alkyne such that the bulkier substituent was pointing away from the Cp*Ir moiety; with PhCCH, however, all three stereoisomers were obtained. With the bis-silylated alkynes (R = SiMe3, SiEt3), loss of one trialkylsilyl group occurred to give [Cp*IrRu3(CO)9(HCCR)] and [Ru3(CO)9(μ-H)(CCR)] (5).",

keywords = "Alkynes, Heterometallic complexes, Iridium, Ruthenium, Stereoselectivity",

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

year = "2006",

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doi = "10.1002/ejic.200500830",

language = "English",

pages = "464--472",

journal = "European Journal of Inorganic Chemistry",

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T1 - Reaction of the heteronuclear cluster [Cp*IrRu3(μ-H) 2(CO)10] with alkynes

T2 - Stereoselective binding

AU - Srinivasan, Padmamalini

AU - Weng, Kee Leong

PY - 2006/1/23

Y1 - 2006/1/23

N2 - The reaction of the heteronuclear cluster [Cp*IrRu 3(μ-H)2-(CO)10] (1) with the symmetrical alkynes RCCR (R = Ph, Et) afforded the butterfly clusters [Cp*IrRu 3(CO)9(RCCR)] (2) and the trinuclear clusters [Cp*IrRu2(CO)7(RCCR)] (3) and [Ru 3(CO)8(C4R4)] (4). The clusters 2 and 3 have the alkyne aligned parallel to an Ru-Ir bond. The reaction of 1 with unsymmetrical alkynes also afforded stereoselective binding of the alkyne such that the bulkier substituent was pointing away from the Cp*Ir moiety; with PhCCH, however, all three stereoisomers were obtained. With the bis-silylated alkynes (R = SiMe3, SiEt3), loss of one trialkylsilyl group occurred to give [Cp*IrRu3(CO)9(HCCR)] and [Ru3(CO)9(μ-H)(CCR)] (5).

AB - The reaction of the heteronuclear cluster [Cp*IrRu 3(μ-H)2-(CO)10] (1) with the symmetrical alkynes RCCR (R = Ph, Et) afforded the butterfly clusters [Cp*IrRu 3(CO)9(RCCR)] (2) and the trinuclear clusters [Cp*IrRu2(CO)7(RCCR)] (3) and [Ru 3(CO)8(C4R4)] (4). The clusters 2 and 3 have the alkyne aligned parallel to an Ru-Ir bond. The reaction of 1 with unsymmetrical alkynes also afforded stereoselective binding of the alkyne such that the bulkier substituent was pointing away from the Cp*Ir moiety; with PhCCH, however, all three stereoisomers were obtained. With the bis-silylated alkynes (R = SiMe3, SiEt3), loss of one trialkylsilyl group occurred to give [Cp*IrRu3(CO)9(HCCR)] and [Ru3(CO)9(μ-H)(CCR)] (5).

KW - Alkynes

KW - Heterometallic complexes

KW - Iridium

KW - Ruthenium

KW - Stereoselectivity

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