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. 2016 Aug 16;72(Pt 9):1301-1304.
doi: 10.1107/S2056989016012822. eCollection 2016 Sep 1.

Crystal structure of bis-(η2-ethyl-ene)(η5-penta-methyl-cyclo-penta-dien-yl)cobalt

Chandika D Ramful  1 , Katherine N Robertson  1 , Kai E O Ylijoki  1
Affiliations

Crystal structure of bis-(η2-ethyl-ene)(η5-penta-methyl-cyclo-penta-dien-yl)cobalt

Chandika D Ramful et al. Acta Crystallogr E Crystallogr Commun. .

Abstract

The title compound, [Co(C10H15)(C2H4)2], was prepared by Na/Hg reduction of [Co2(C10H15)2(μ-Cl)2] in THF under an ethyl-ene atmosphere and crystallized from pentane at 193 K. The Co-C(olefin) bonds have an average length of 2.022 (2) Å, while the Co-C(penta-dien-yl) bonds average 2.103 (19) Å. The olefin C=C bonds are 1.410 (1) Å. The dihedral angle between the planes defined by the cyclo-penta-dienyl ligand and the two olefin ligands is 0.25 (12)°. In the crystal, mol-ecules are linked into chains by C-H⋯π inter-actions.

Keywords: cobalt; crystal structure; olefin complex; penta­methyl­cyclo­penta­dien­yl.

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Figures

Figure 1
Figure 1
The mol­ecular structure of the title compound, showing the atom labelling. Displacement ellipsoids are drawn at the 50% probability level for non-H atoms.
Figure 2
Figure 2
Packing diagram of the title compound, viewed down the c axis, showing a chain formed by C—H⋯π inter­actions. Dotted lines show the shortest C—H⋯C contact involved in the inter­action. Ellipsoids are drawn at the 50% probability level. The 21 screw axes (green) are also shown.
Figure 3
Figure 3
Comparison diagram of the isostructural Cp*Co(CH2CH2)2 (left) and Cp*Fe(CH2CH2)2 (right) unit cells, viewed down the b axis.
See this image and copyright information in PMC

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