New mixed-metal clusters via metal hydride coupling. Synthesis and crystal structures of [(µ2-H)Os3W(CO)125-C5H5)] and [(µ2-H)3Os3W(CO)115-C5H5)]

Abstract
The reaction of [Os3(CO)10(NCMe)2] with the hydrido-complex [HW(CO)35-C5H5)] under mild conditions yields the heteronuclear metal carbonyl hydride complexes [(µ2-H)Os3W(CO)125-C5H5)](1) and [(µ2-H)3Os3W(CO)115-C5H5)](2); the complexes have been characterized by X-ray diffraction studies and the locations of the bridging hydride ligands have been ascertained.

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