Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/94672
Title: Reactions of 1,2,3-triphenyl-1,2,3-triphosphaindan with activated triosmium carbonyl clusters: Characterization and crystal structure of the products
Authors: Ang, S.-G. 
Zhong, X. 
Ang, H.-G. 
Issue Date: 2001
Source: Ang, S.-G.,Zhong, X.,Ang, H.-G. (2001). Reactions of 1,2,3-triphenyl-1,2,3-triphosphaindan with activated triosmium carbonyl clusters: Characterization and crystal structure of the products. Journal of the Chemical Society, Dalton Transactions (7) : 1151-1158. ScholarBank@NUS Repository.
Abstract: Reaction of 1,2,3-triphenyl-1,2,3-triphosphaindan (I) with [Os3(CO)11(NCMe)] at room temperature afforded two clusters: mono-substituted trinuclear [Os3(CO)11{1-C6H4 (PPh)3}] 1 and bridged bis-trinuclear [{Os3(CO)11}2{μ-1,3-η2- C6H4(PPh)3}] 2, which can also be prepared by further reaction of 1 with an equimolar amount of [Os3(CO)11(NCMe)]. The reaction at 100°C gave, apart from cluster 2, a di-substituted bridged cluster, [Os3(CO)10{μ-1,3-η2-C6 H4(PPh)3}] 3, and that at 140°C formed a linked pentanuclear cluster, [Os2(CO)6{μ3-η3- PPhC6H4(PPh)2}Os3 (CO)11] 4 and a trinuclear cluster with only two M-M bonds, [Os3(CO)9{μ3-η3- PPhC6H4(PPh)2}] 5 together with 3. Similarly [Os3(CO)10(NCMe)2] reacted with I at room temperature to afford 3 in good yields. The conversion of cluster 1 into 3 can be achieved through pyrolysis of a solution of 1. Cluster 4 exhibits stereochemical non-rigidity in the solution state and exists as two isomers at low temperature. All the new compounds were characterized by spectroscopic and analytical techniques and their structures established by X-ray crystallography.
Source Title: Journal of the Chemical Society, Dalton Transactions
URI: http://scholarbank.nus.edu.sg/handle/10635/94672
ISSN: 1470479X
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