Mixed-metal cluster chemistry V 1 syntheses and X-ray crystal structure of Cp2Mo2Ir2( μ3-CO)( μ-CO)5(CO)4

Nigel T. Lucas; Mark G. Humphrey; David C.R. Hockless

doi:10.1016/S0022-328X(97)00032-6

Mixed-metal cluster chemistry V ¹ syntheses and X-ray crystal structure of Cp₂Mo₂Ir₂( μ₃-CO)( μ-CO)₅(CO)₄

Nigel T. Lucas, Mark G. Humphrey^*, David C.R. Hockless

^*Corresponding author for this work

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

24 Citations (Scopus)

Abstract

The mixed-metal cluster Cp₂Mo₂Ir₂(CO)₁₀ has been synthesized by two procedures, namely reacting CpMo(CO)₃H with IrCl(CO)₂( p-toluidine) under a CO atmosphere in the presence of zinc (23%), and by combining [CpMo(CO)₃]^- with IrCl(CO)₂(p-toluidine) (78%). A structural study reveals that, in contrast to the analogous Cp₂W₂Ir2(CO)₁₀, it is a rare example of a tetrahedral cluster with all edges bridged by CO, and that it possesses an unusual 'semi-face-capping' carbonyl ligand. Carbonyl bridging and hence steric crowding increase on proceeding from tungsten to molybdenum, rendering the title complex amongst the most crowded of metal clusters.

Original language	English
Pages (from-to)	175-181
Number of pages	7
Journal	Journal of Organometallic Chemistry
Volume	535
Issue number	1-2
DOIs	https://doi.org/10.1016/S0022-328X(97)00032-6
Publication status	Published - 15 May 1997

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@article{e158821d3a45407ca1a6a1f999473d9a,

title = "Mixed-metal cluster chemistry V 1 syntheses and X-ray crystal structure of Cp2Mo2Ir2( μ3-CO)( μ-CO)5(CO)4",

abstract = "The mixed-metal cluster Cp2Mo2Ir2(CO)10 has been synthesized by two procedures, namely reacting CpMo(CO)3H with IrCl(CO)2( p-toluidine) under a CO atmosphere in the presence of zinc (23%), and by combining [CpMo(CO)3]- with IrCl(CO)2(p-toluidine) (78%). A structural study reveals that, in contrast to the analogous Cp2W2Ir2(CO)10, it is a rare example of a tetrahedral cluster with all edges bridged by CO, and that it possesses an unusual 'semi-face-capping' carbonyl ligand. Carbonyl bridging and hence steric crowding increase on proceeding from tungsten to molybdenum, rendering the title complex amongst the most crowded of metal clusters.",

keywords = "Carbonyl, Cluster, Crystal structure, Cyclopentadienyl, Iridium, Molybdenum",

author = "Lucas, {Nigel T.} and Humphrey, {Mark G.} and Hockless, {David C.R.}",

year = "1997",

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doi = "10.1016/S0022-328X(97)00032-6",

language = "English",

volume = "535",

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journal = "Journal of Organometallic Chemistry",

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TY - JOUR

T1 - Mixed-metal cluster chemistry V 1 syntheses and X-ray crystal structure of Cp2Mo2Ir2( μ3-CO)( μ-CO)5(CO)4

AU - Lucas, Nigel T.

AU - Humphrey, Mark G.

AU - Hockless, David C.R.

PY - 1997/5/15

Y1 - 1997/5/15

N2 - The mixed-metal cluster Cp2Mo2Ir2(CO)10 has been synthesized by two procedures, namely reacting CpMo(CO)3H with IrCl(CO)2( p-toluidine) under a CO atmosphere in the presence of zinc (23%), and by combining [CpMo(CO)3]- with IrCl(CO)2(p-toluidine) (78%). A structural study reveals that, in contrast to the analogous Cp2W2Ir2(CO)10, it is a rare example of a tetrahedral cluster with all edges bridged by CO, and that it possesses an unusual 'semi-face-capping' carbonyl ligand. Carbonyl bridging and hence steric crowding increase on proceeding from tungsten to molybdenum, rendering the title complex amongst the most crowded of metal clusters.

AB - The mixed-metal cluster Cp2Mo2Ir2(CO)10 has been synthesized by two procedures, namely reacting CpMo(CO)3H with IrCl(CO)2( p-toluidine) under a CO atmosphere in the presence of zinc (23%), and by combining [CpMo(CO)3]- with IrCl(CO)2(p-toluidine) (78%). A structural study reveals that, in contrast to the analogous Cp2W2Ir2(CO)10, it is a rare example of a tetrahedral cluster with all edges bridged by CO, and that it possesses an unusual 'semi-face-capping' carbonyl ligand. Carbonyl bridging and hence steric crowding increase on proceeding from tungsten to molybdenum, rendering the title complex amongst the most crowded of metal clusters.

KW - Carbonyl

KW - Cluster

KW - Crystal structure

KW - Cyclopentadienyl

KW - Iridium

KW - Molybdenum

UR - http://www.scopus.com/inward/record.url?scp=0031570164&partnerID=8YFLogxK

U2 - 10.1016/S0022-328X(97)00032-6

DO - 10.1016/S0022-328X(97)00032-6

M3 - Article

AN - SCOPUS:0031570164

SN - 0022-328X

VL - 535

SP - 175

EP - 181

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

IS - 1-2

ER -

Mixed-metal cluster chemistry V ¹ syntheses and X-ray crystal structure of Cp₂Mo₂Ir₂( μ₃-CO)( μ-CO)₅(CO)₄

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