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Cleavage of Ge-S and C-H bonds in the reaction of electron-deficient [Os-3(CO)(8)(mu-H)(mu(3)-Ph2PCH2P(Ph)C6H4)] with Ph3GeSPh: Generation of thiophenol derivatives [Os-3(CO)(8)(mu-H)(mu-SPh)(mu-dppm)] and [Os-3(CO)(7)(mu-H)(mu-SPh)(mu(3)-SC6H4)(mu-dppm)]

Raha, AK; Ghosh, S; Kabir, SE; Nicholson, BK; Tocher, DA; (2009) Cleavage of Ge-S and C-H bonds in the reaction of electron-deficient [Os-3(CO)(8)(mu-H)(mu(3)-Ph2PCH2P(Ph)C6H4)] with Ph3GeSPh: Generation of thiophenol derivatives [Os-3(CO)(8)(mu-H)(mu-SPh)(mu-dppm)] and [Os-3(CO)(7)(mu-H)(mu-SPh)(mu(3)-SC6H4)(mu-dppm)]. J ORGANOMET CHEM , 694 (5) 752 - 756. 10.1016/j.jorganchem.2008.12.005.

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Abstract

Heating the electron-deficient [Os-3(CO)(8)(mu-H)(mu(3)-Ph2PCH2P(Ph)C6H4)] (1) and Ph3GeSPh in benzene at 80 degrees C led to the thiolato bridged compounds, [Os-3(CO)(8)(mu-H)(mu-SPh)(mu-dppm)] (2) and [Os-3(CO)(7)(mu-H)(mu-SPh)(mu(3)-SC6H4)(mu-dppm)] (3), formed by cleavage of Ge-S and C-S bonds of the ligand, in 40% and 17% yields, respectively. Both compounds 2 and 3 have been characterized by a combination of elemental analysis, infrared and H-1 NMR spectroscopic data together with single crystal X-ray crystallography. Compound 3 contains an open triangle of osmium atoms bridged by a SPh and SC6H4 ligands on opposite sides of the cluster with a dppm ligand bridging one of the Os-Os edges. Compound 2 consists of a closed triangular cluster of osmium atoms with a bridging SPh, and a bridging hydride ligand on the same Os-Os edge, and a dppm ligand bridging one of the remaining Os-Os edges. (C) 2008 Elsevier B.V. All rights reserved.

Type:Article
Title:Cleavage of Ge-S and C-H bonds in the reaction of electron-deficient [Os-3(CO)(8)(mu-H)(mu(3)-Ph2PCH2P(Ph)C6H4)] with Ph3GeSPh: Generation of thiophenol derivatives [Os-3(CO)(8)(mu-H)(mu-SPh)(mu-dppm)] and [Os-3(CO)(7)(mu-H)(mu-SPh)(mu(3)-SC6H4)(mu-dppm)]
DOI:10.1016/j.jorganchem.2008.12.005
Keywords:Triosmium clusters, Bond cleavage (Ge-S, C-H), Thiophenol, Dppm, X-ray structures, X-RAY STRUCTURES, TRIOSMIUM CLUSTER (MU-H)OS-3(CO)(8)(PH2PCH2P(PH)C6H4), OSMIUM CARBONYL CLUSTERS, CRYSTAL-STRUCTURES, LIGANDS, COMPLEXES, OS-3(CO)(10)(MU-DPPM), PH2PCH2PPH2, HYDRIDO
UCL classification:UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry

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