Synthesis, characterisation and electrochemical analysis of a bis(ferrocenyl) vinyl allyl ether-substituted triosmium cluster

Scott L. Ingham; Brian F.G. Johnson; Paul R. Raithby; Kenneth J. Taylor; Lesley J. Yellowlees

doi:10.1039/dt9960003521

Synthesis, characterisation and electrochemical analysis of a bis(ferrocenyl) vinyl allyl ether-substituted triosmium cluster

Scott L. Ingham, Brian F.G. Johnson, Paul R. Raithby, Kenneth J. Taylor, Lesley J. Yellowlees

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7 Citations (SciVal)

Abstract

From the reaction of [Os₃(CO)₁₀(MeCN)₂] with ethynylferrocene was isolated the known cluster [Os₃(CO)₁₀{(C₅H₅)FeC ₅H₄CCH}] 1; in addition the bis(ferrocenyl)-substituted triosmium cluster [Os₃(CO)₉{[(C₅H₅)FeC ₅H₄CCH]₂CO}] 2 was obtained in reasonable yield. Both ¹H and ¹³C-{¹H} NMR studies of 2 indicate that the ferrocenyl groups are inequivalent. A single-crystal X-ray analysis of 2 showed that on co-ordination to the triosmium cluster the two ethynylferrocene groups have been linked via a metal carbonyl to give a composite ligand that may be described as a 2,6-bis(ferrocenyl) vinyl allyl ether. An electrochemical analysis of the compounds (C₅H₅)FeC₅H₄CCH, 1 and 2 reveals reversible one-electron oxidations attributable to the ferrocenyl moiety, with the two well separated redox processes found in 2 indicating inequivalent ferrocenyl sites. In addition, irreversible two-electron cluster-based oxidation processes were observed for 1 and 2.

Original language	English
Pages (from-to)	3521-3525
Number of pages	5
Journal	Journal of the Chemical Society - Dalton Transactions
Volume	1996
Issue number	17
DOIs	https://doi.org/10.1039/dt9960003521
Publication status	Published - 7 Sept 1996

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General Chemistry

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@article{6b8eff95f1744fcbb535a118e984359d,

title = "Synthesis, characterisation and electrochemical analysis of a bis(ferrocenyl) vinyl allyl ether-substituted triosmium cluster",

abstract = "From the reaction of [Os3(CO)10(MeCN)2] with ethynylferrocene was isolated the known cluster [Os3(CO)10{(C5H5)FeC 5H4CCH}] 1; in addition the bis(ferrocenyl)-substituted triosmium cluster [Os3(CO)9{[(C5H5)FeC 5H4CCH]2CO}] 2 was obtained in reasonable yield. Both 1H and 13C-{1H} NMR studies of 2 indicate that the ferrocenyl groups are inequivalent. A single-crystal X-ray analysis of 2 showed that on co-ordination to the triosmium cluster the two ethynylferrocene groups have been linked via a metal carbonyl to give a composite ligand that may be described as a 2,6-bis(ferrocenyl) vinyl allyl ether. An electrochemical analysis of the compounds (C5H5)FeC5H4CCH, 1 and 2 reveals reversible one-electron oxidations attributable to the ferrocenyl moiety, with the two well separated redox processes found in 2 indicating inequivalent ferrocenyl sites. In addition, irreversible two-electron cluster-based oxidation processes were observed for 1 and 2.",

author = "Ingham, {Scott L.} and Johnson, {Brian F.G.} and Raithby, {Paul R.} and Taylor, {Kenneth J.} and Yellowlees, {Lesley J.}",

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T1 - Synthesis, characterisation and electrochemical analysis of a bis(ferrocenyl) vinyl allyl ether-substituted triosmium cluster

AU - Ingham, Scott L.

AU - Johnson, Brian F.G.

AU - Raithby, Paul R.

AU - Taylor, Kenneth J.

AU - Yellowlees, Lesley J.

PY - 1996/9/7

Y1 - 1996/9/7

N2 - From the reaction of [Os3(CO)10(MeCN)2] with ethynylferrocene was isolated the known cluster [Os3(CO)10{(C5H5)FeC 5H4CCH}] 1; in addition the bis(ferrocenyl)-substituted triosmium cluster [Os3(CO)9{[(C5H5)FeC 5H4CCH]2CO}] 2 was obtained in reasonable yield. Both 1H and 13C-{1H} NMR studies of 2 indicate that the ferrocenyl groups are inequivalent. A single-crystal X-ray analysis of 2 showed that on co-ordination to the triosmium cluster the two ethynylferrocene groups have been linked via a metal carbonyl to give a composite ligand that may be described as a 2,6-bis(ferrocenyl) vinyl allyl ether. An electrochemical analysis of the compounds (C5H5)FeC5H4CCH, 1 and 2 reveals reversible one-electron oxidations attributable to the ferrocenyl moiety, with the two well separated redox processes found in 2 indicating inequivalent ferrocenyl sites. In addition, irreversible two-electron cluster-based oxidation processes were observed for 1 and 2.

AB - From the reaction of [Os3(CO)10(MeCN)2] with ethynylferrocene was isolated the known cluster [Os3(CO)10{(C5H5)FeC 5H4CCH}] 1; in addition the bis(ferrocenyl)-substituted triosmium cluster [Os3(CO)9{[(C5H5)FeC 5H4CCH]2CO}] 2 was obtained in reasonable yield. Both 1H and 13C-{1H} NMR studies of 2 indicate that the ferrocenyl groups are inequivalent. A single-crystal X-ray analysis of 2 showed that on co-ordination to the triosmium cluster the two ethynylferrocene groups have been linked via a metal carbonyl to give a composite ligand that may be described as a 2,6-bis(ferrocenyl) vinyl allyl ether. An electrochemical analysis of the compounds (C5H5)FeC5H4CCH, 1 and 2 reveals reversible one-electron oxidations attributable to the ferrocenyl moiety, with the two well separated redox processes found in 2 indicating inequivalent ferrocenyl sites. In addition, irreversible two-electron cluster-based oxidation processes were observed for 1 and 2.

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JO - Journal of the Chemical Society - Dalton Transactions

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Synthesis, characterisation and electrochemical analysis of a bis(ferrocenyl) vinyl allyl ether-substituted triosmium cluster

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