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Title: Triosmium-antimony clusters containing the μ,η2-phenylene ligand: Unusually long osmium-osmium bonds
Authors: Chen, G.
Deng, M.
Lee, C.K.D.
Leong, W.K. 
Tan, J.
Tay, C.T.
Keywords: Antimony
Issue Date: 15-Jan-2006
Citation: Chen, G., Deng, M., Lee, C.K.D., Leong, W.K., Tan, J., Tay, C.T. (2006-01-15). Triosmium-antimony clusters containing the μ,η2-phenylene ligand: Unusually long osmium-osmium bonds. Journal of Organometallic Chemistry 691 (3) : 387-394. ScholarBank@NUS Repository.
Abstract: The reaction of the osmium-antimony cluster Os3(μ-H)(μ- SbPh2)(μ3,η2-C6H 4)(CO)9 with AsPh3 at room temperature afforded the o-phenylene cluster Os3(μ-H)(SbPh2) (μ2,η2-C6H4)(CO) 9(AsPh3) by nucleophilic addition via a metal-metal bond cleavage, and the substitution product Os3(μ-H)(SbPh 2)(μ3,η2-C6H 4)(CO)8(AsPh3). It reacted with tBuNC to afford the adduct Os3(μ-H)(SbPh 2)(μ2,η2-C6H 4)(CO)9(CNtBu) quantitatively. This adduct isomerised slowly on standing via migration of the isonitrile, while photolysis led to decarbonylation to Os3(μ-H)(SbPh2) (μ2,η2-C6H4)(CO) 8(CNtBu). All the products have been characterised completely, including by X-ray crystallography, and their structures exhibit very long Os-Os bonds. © 2005 Elsevier B.V. All rights reserved.
Source Title: Journal of Organometallic Chemistry
ISSN: 0022328X
DOI: 10.1016/j.jorganchem.2005.09.005
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