Dicarbonylcyclopentadienyliridium, (η-C5H5)Ir(CO)2, as a ligand

Faming Jiang; Kumar Biradha; Weng Kee Leong; Roland K. Pomeroy; Michael J. Zaworotko

doi:10.1139/v99-131

Dicarbonylcyclopentadienyliridium, (η-C₅H₅)Ir(CO)₂, as a ligand

Faming Jiang, Kumar Biradha, Weng Kee Leong, Roland K. Pomeroy^*, Michael J. Zaworotko

^*Corresponding author for this work

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

11 Citations (Scopus)

Abstract

The following complexes, in which CpIr(CO)₂ acts as a 2e donor ligand, have been prepared: Cp(OC)₂IrW(CO)₅ (1), Cp(OC)₂IrRu(CO)₃(SiCl₃)₂, Cp(OC)₂IrOs(CO)₃(GeCl₃)(Cl) (2), Cp(OC)₂IrOs(CO)₃(X)₂ (X = Cl, Br (3), I). The characterization of the complexes included the crystal structures of 1, 2, and 3, which reveal that all contain an unbridged metal-metal bond. The carbonyl ligands of 1 in solution undergo exchange on the NMR time scale above -40°C. With the exception of 2, all the complexes dissociate in solution at room temperature, some rapidly so. Only in the case of 3 is an equilibrium with the dissociation products established. The results indicate that CpIr(CO)₂ is a weak ligand.

Original language	English
Pages (from-to)	1327-1335
Number of pages	9
Journal	Canadian Journal of Chemistry
Volume	77
Issue number	8
DOIs	https://doi.org/10.1139/v99-131
Publication status	Published - 1999
Externally published	Yes

ASJC Scopus Subject Areas

Catalysis
General Chemistry
Organic Chemistry

Keywords

Binuclear
Iridium
Osmium
Tungsten

Access to Document

10.1139/v99-131

Cite this

@article{d4990854225a4bf6ad9f11ecdee3511a,

title = "Dicarbonylcyclopentadienyliridium, (η-C5H5)Ir(CO)2, as a ligand",

abstract = "The following complexes, in which CpIr(CO)2 acts as a 2e donor ligand, have been prepared: Cp(OC)2IrW(CO)5 (1), Cp(OC)2IrRu(CO)3(SiCl3)2, Cp(OC)2IrOs(CO)3(GeCl3)(Cl) (2), Cp(OC)2IrOs(CO)3(X)2 (X = Cl, Br (3), I). The characterization of the complexes included the crystal structures of 1, 2, and 3, which reveal that all contain an unbridged metal-metal bond. The carbonyl ligands of 1 in solution undergo exchange on the NMR time scale above -40°C. With the exception of 2, all the complexes dissociate in solution at room temperature, some rapidly so. Only in the case of 3 is an equilibrium with the dissociation products established. The results indicate that CpIr(CO)2 is a weak ligand.",

keywords = "Binuclear, Iridium, Osmium, Tungsten",

author = "Faming Jiang and Kumar Biradha and Leong, {Weng Kee} and Pomeroy, {Roland K.} and Zaworotko, {Michael J.}",

year = "1999",

doi = "10.1139/v99-131",

language = "English",

volume = "77",

pages = "1327--1335",

journal = "Canadian Journal of Chemistry",

issn = "0008-4042",

publisher = "National Research Council of Canada",

number = "8",

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TY - JOUR

T1 - Dicarbonylcyclopentadienyliridium, (η-C5H5)Ir(CO)2, as a ligand

AU - Jiang, Faming

AU - Biradha, Kumar

AU - Leong, Weng Kee

AU - Pomeroy, Roland K.

AU - Zaworotko, Michael J.

PY - 1999

Y1 - 1999

N2 - The following complexes, in which CpIr(CO)2 acts as a 2e donor ligand, have been prepared: Cp(OC)2IrW(CO)5 (1), Cp(OC)2IrRu(CO)3(SiCl3)2, Cp(OC)2IrOs(CO)3(GeCl3)(Cl) (2), Cp(OC)2IrOs(CO)3(X)2 (X = Cl, Br (3), I). The characterization of the complexes included the crystal structures of 1, 2, and 3, which reveal that all contain an unbridged metal-metal bond. The carbonyl ligands of 1 in solution undergo exchange on the NMR time scale above -40°C. With the exception of 2, all the complexes dissociate in solution at room temperature, some rapidly so. Only in the case of 3 is an equilibrium with the dissociation products established. The results indicate that CpIr(CO)2 is a weak ligand.

AB - The following complexes, in which CpIr(CO)2 acts as a 2e donor ligand, have been prepared: Cp(OC)2IrW(CO)5 (1), Cp(OC)2IrRu(CO)3(SiCl3)2, Cp(OC)2IrOs(CO)3(GeCl3)(Cl) (2), Cp(OC)2IrOs(CO)3(X)2 (X = Cl, Br (3), I). The characterization of the complexes included the crystal structures of 1, 2, and 3, which reveal that all contain an unbridged metal-metal bond. The carbonyl ligands of 1 in solution undergo exchange on the NMR time scale above -40°C. With the exception of 2, all the complexes dissociate in solution at room temperature, some rapidly so. Only in the case of 3 is an equilibrium with the dissociation products established. The results indicate that CpIr(CO)2 is a weak ligand.

KW - Binuclear

KW - Iridium

KW - Osmium

KW - Tungsten

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JO - Canadian Journal of Chemistry

JF - Canadian Journal of Chemistry

IS - 8

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