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Updated: May 3, 2026

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Reactivity of mer-hydrido(2-mercaptobenzoyl)tris(trimethylphosphine)cobalt(III) complex
Qingfen Niu1, Hongjian Sun, Lin Wang
1School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, PR China. huqingping@sdu.edu.cn xli63@sdu.edu.cn.
Abstract:
The reactivity of mer-hydrido(2-mercaptobenzoyl)tris(trimethylphosphine)cobalt(III) complex 1 was intensively studied. A series of sulfur-coordinated organocobalt complexes (2-8) were obtained through the reactions of 1 with RX (RX = HCl, C2H5Br and CH3I), 2-(diphenylphosphanyl)phenol, 2-(diphenylphosphino)benzenethiol, and CO. The reaction of complex with ethynyltrimethylsilane under 1 bar of CO afforded a penta-coordinate cobalt(I) complex 11 via insertion reaction of C≡C bond of ethynyltrimethylsilane into Co-H bond and subsequent C,C-coupling reaction (reductive elimination). The formation mechanism of 11 was proposed and partly-experimentally verified. As an intermediate, the tetra-coordinate cobalt(I) complex 13 was isolated through the reaction of complex 1 with ethynyltrimethylsilane in the absence of CO. The crystal structures of complexes 2-4, 8, and 11 were determined by X-ray diffraction.
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