Australian Journal of Chemistry Australian Journal of Chemistry Society
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Triosmium Clusters Containing 2-Mercaptobenzothiazolate Ligands

Md. Abdul Khaleque A , Kazi A. Azam A C , Md. Manzurul Karim A , Shishir Ghosh A B , Graeme Hogarth B C and Shariff E. Kabir A C
+ Author Affliations
- Author Affliations

A Department of Chemistry, Jahangirnagar University, Savar, Dhaka-1342, Bangladesh.

B Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK.

C Corresponding authors. Email: kazi.ali.azam@gmail.com; g.hogarth@ucl.ac.uk; skabir_ju@yahoo.com

Australian Journal of Chemistry 65(7) 773-778 https://doi.org/10.1071/CH11510
Submitted: 29 December 2011  Accepted: 30 January 2012   Published: 29 February 2012

Abstract

Reaction of the labile cluster [Os3(CO)10(NCMe)2] with 2,2′-benzothiazyl disulfide leads to the isolation of four products, namely the known hydride complex [Os3(CO)10(µ-H)(µ- S2NC7H4)], [Os3(CO)10(µ-S2NC7H4)2] (1) in which both thiolate ligands act as three-electron donor ligands and span a single osmium-osmium vector and two isomers of [Os3(CO)9(µ-S2NC7H4)(µ32-S2NC7H4)] (2, 3) in which one thiolate caps a face of the triosmium cluster via secondary nitrogen coordination. In a separate experiment thermolysis of 1 in n-heptane affords only 2. Cluster 1 contains two 2-mercaptobenzothiazolate ligands in a µ-η1 mode of bonding, while 2 and 3 are isomers differing in the relative disposition of the two 2-mercaptobenzothiazolate ligands.


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