Synthesis, characterisation and crystal structures of a series of pentanuclear arene-substituted clusters

Jack Lewis; Chi Keung Li; M. Carmen Ramirez De Arellano; Paul R. Raithby; Wing Tak Wong

doi:10.1039/DT9930001359

Synthesis, characterisation and crystal structures of a series of pentanuclear arene-substituted clusters

Jack Lewis, Chi Keung Li, M. Carmen Ramirez De Arellano, Paul R. Raithby, Wing Tak Wong

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

Abstract

Reduction of the tetraosmium cluster [Os₄H₄(CO)₁₂] with K-Ph₂CO gave the cluster dianion [Os₄H₄(CO)₁₁]^2- 1 in quantitative yield. This dianion was treated with [Ru(C₆H₆)(MeCN)₃]²⁺ to give [RuOs₄H₄(η⁶-C₆H ₆)(CO)₁₁] 2 in fair yield, while the corresponding reaction with [Os(C₆H₆)(MeCN)₃]²⁺ gave [Os₅H₄(η⁶-C₆H ₆)(CO)₁₁] 3 and [Os₅H₄(η⁶-C₆H ₆)(CO)₁₂] 4 in similar yields (ca. 25% each). Clusters 2-4 have been fully characterised by both spectroscopic and crystallographic methods. The crystal structures of 2 and 3 are isomorphous and both the molecules are isostrctural. Both contain a trigonal bipyramidal metal-core geometry with the η⁶-C₆H₆ co-ordinated to the Ru or Os atom in an equatorial position. Cluster 4 contains an Os₄ tetrahedron with one Os-Os edge bridged by an 'Os(η⁶-C₆H₆)(CO)' unit. Complex 3 is not convertible into 4 under thermolytic and photolytic conditions in the presence of CO, or 4 into 3 in the absence of CO.

Original language	English
Pages (from-to)	1359-1363
Number of pages	5
Journal	Journal of the Chemical Society, Dalton Transactions
Issue number	9
DOIs	https://doi.org/10.1039/DT9930001359
Publication status	Published - 1993

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General Chemistry

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@article{1a33a64b6a004573a1d286f4dd5c3e1e,

title = "Synthesis, characterisation and crystal structures of a series of pentanuclear arene-substituted clusters",

abstract = "Reduction of the tetraosmium cluster [Os4H4(CO)12] with K-Ph2CO gave the cluster dianion [Os4H4(CO)11]2- 1 in quantitative yield. This dianion was treated with [Ru(C6H6)(MeCN)3]2+ to give [RuOs4H4(η6-C6H 6)(CO)11] 2 in fair yield, while the corresponding reaction with [Os(C6H6)(MeCN)3]2+ gave [Os5H4(η6-C6H 6)(CO)11] 3 and [Os5H4(η6-C6H 6)(CO)12] 4 in similar yields (ca. 25% each). Clusters 2-4 have been fully characterised by both spectroscopic and crystallographic methods. The crystal structures of 2 and 3 are isomorphous and both the molecules are isostrctural. Both contain a trigonal bipyramidal metal-core geometry with the η6-C6H6 co-ordinated to the Ru or Os atom in an equatorial position. Cluster 4 contains an Os4 tetrahedron with one Os-Os edge bridged by an 'Os(η6-C6H6)(CO)' unit. Complex 3 is not convertible into 4 under thermolytic and photolytic conditions in the presence of CO, or 4 into 3 in the absence of CO.",

author = "Jack Lewis and Li, {Chi Keung} and {Ramirez De Arellano}, {M. Carmen} and Raithby, {Paul R.} and Wong, {Wing Tak}",

year = "1993",

doi = "10.1039/DT9930001359",

language = "English",

pages = "1359--1363",

journal = "Journal of the Chemical Society, Dalton Transactions",

issn = "1472-7773",

publisher = "Royal Society of Chemistry",

number = "9",

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T1 - Synthesis, characterisation and crystal structures of a series of pentanuclear arene-substituted clusters

AU - Lewis, Jack

AU - Li, Chi Keung

AU - Ramirez De Arellano, M. Carmen

AU - Raithby, Paul R.

AU - Wong, Wing Tak

PY - 1993

Y1 - 1993

N2 - Reduction of the tetraosmium cluster [Os4H4(CO)12] with K-Ph2CO gave the cluster dianion [Os4H4(CO)11]2- 1 in quantitative yield. This dianion was treated with [Ru(C6H6)(MeCN)3]2+ to give [RuOs4H4(η6-C6H 6)(CO)11] 2 in fair yield, while the corresponding reaction with [Os(C6H6)(MeCN)3]2+ gave [Os5H4(η6-C6H 6)(CO)11] 3 and [Os5H4(η6-C6H 6)(CO)12] 4 in similar yields (ca. 25% each). Clusters 2-4 have been fully characterised by both spectroscopic and crystallographic methods. The crystal structures of 2 and 3 are isomorphous and both the molecules are isostrctural. Both contain a trigonal bipyramidal metal-core geometry with the η6-C6H6 co-ordinated to the Ru or Os atom in an equatorial position. Cluster 4 contains an Os4 tetrahedron with one Os-Os edge bridged by an 'Os(η6-C6H6)(CO)' unit. Complex 3 is not convertible into 4 under thermolytic and photolytic conditions in the presence of CO, or 4 into 3 in the absence of CO.

AB - Reduction of the tetraosmium cluster [Os4H4(CO)12] with K-Ph2CO gave the cluster dianion [Os4H4(CO)11]2- 1 in quantitative yield. This dianion was treated with [Ru(C6H6)(MeCN)3]2+ to give [RuOs4H4(η6-C6H 6)(CO)11] 2 in fair yield, while the corresponding reaction with [Os(C6H6)(MeCN)3]2+ gave [Os5H4(η6-C6H 6)(CO)11] 3 and [Os5H4(η6-C6H 6)(CO)12] 4 in similar yields (ca. 25% each). Clusters 2-4 have been fully characterised by both spectroscopic and crystallographic methods. The crystal structures of 2 and 3 are isomorphous and both the molecules are isostrctural. Both contain a trigonal bipyramidal metal-core geometry with the η6-C6H6 co-ordinated to the Ru or Os atom in an equatorial position. Cluster 4 contains an Os4 tetrahedron with one Os-Os edge bridged by an 'Os(η6-C6H6)(CO)' unit. Complex 3 is not convertible into 4 under thermolytic and photolytic conditions in the presence of CO, or 4 into 3 in the absence of CO.

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DO - 10.1039/DT9930001359

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ER -

Synthesis, characterisation and crystal structures of a series of pentanuclear arene-substituted clusters

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