Received 28 October 2013
In the title compound, [Co4(C5H5)4(3-CCH2SiMe3)(3-H)], the Co atoms form a distorted tetrahedron with the ethylidyne moiety bridging three of the Co atoms as well as the hydrido ligand also bridging three of the Co atoms. The Co-Co bond lengths in the Co4 tetrahedron vary from 2.3844 (4) to 2.4608 (4) Å. Each Co atom is additionally 5-bonded to a cyclopentadienyl (Cp) anion.
For other tetranuclear Co clusters with a tetrahedral Co4 core featuring 3-bridging hydrido ligands, see: Huttner & Lorenz (1975); Stella et al. (1988); Wadepohl & Pritzkow (1993); Schneider et al. (1997); Bau et al. (2004). [CpCo]4 clusters with 3-bridging carbonyl groups are described by Gambarotta et al. (1985) and Stella et al. (1988). For [CpCo]4 clusters with 3-bridging hydrido and 3-bridging C-CH3 ligands, see: Stella et al. (1988) and Wadepohl & Pritzkow (1993). The starting alkyne complex Cp*2Ti(2-Ph2PC2PPh2) is described by Haehnel et al. (2013). For the starting Co complex CpCo(H2C=CHSiMe3)2, see: Hapke et al. (2010).
Data collection: APEX2 (Bruker, 2011); cell refinement: SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: PK2502 ).
Bau, R., Ho, N. N., Schneider, J. J., Mason, S. A. & McIntyre, G. J. (2004). Inorg. Chem. 43, 555-558.
Bruker (2008). SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.
Bruker (2009). SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
Bruker (2011). APEX2. Bruker AXS Inc., Madison, Wisconsin, USA.
Gambarotta, S., Floriani, C., Chiesi-Villa, A. & Guastini, C. (1985). J. Organomet. Chem. 296, c6-c10.
Haehnel, M., Hansen, S., Schubert, K., Arndt, P., Spannenberg, A., Haijun, J. & Rosenthal, U. (2013). J. Am. Chem. Soc., DOI: 10.1021/ja409320k.
Hapke, M., Weding, N. & Spannenberg, A. (2010). Organometallics, 29, 4298-4304.
Huttner, G. & Lorenz, H. (1975). Chem. Ber. 108, 973-983.
Schneider, J. J., Specht, U., Goddard, R. & Krüger, C. (1997). Chem. Ber. 130, 161-170.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Stella, S., Floriani, C., Chiesi-Villa, A. & Guastini, C. (1988). New J. Chem. 12, 621-631.
Wadepohl, H. & Pritzkow, H. (1993). J. Organomet. Chem. 450, 9-19.