Issue 7, 2001

Reactions of 1,2,3-triphenyl-1,2,3-triphosphaindan with activated triosmium carbonyl clusters: characterization and crystal structure of the products

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-C6H4(PPh)3}] 3, and that at 140 °C formed a linked pentanuclear cluster, [Os2(CO)633-PPhC6H4(PPh)2}Os3(CO)11] 4 and a trinuclear cluster with only two M–M bonds, [Os3(CO)933-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.

Graphical abstract: Reactions of 1,2,3-triphenyl-1,2,3-triphosphaindan with activated triosmium carbonyl clusters: characterization and crystal structure of the products

Supplementary files

Article information

Article type
Paper
Submitted
31 Oct 2000
Accepted
08 Feb 2001
First published
08 Mar 2001

J. Chem. Soc., Dalton Trans., 2001, 1151-1158

Reactions of 1,2,3-triphenyl-1,2,3-triphosphaindan with activated triosmium carbonyl clusters: characterization and crystal structure of the products

S. Ang, X. Zhong and H. Ang, J. Chem. Soc., Dalton Trans., 2001, 1151 DOI: 10.1039/B008766L

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