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Crystal structure of bis ­ ( η 2 -ethyl ­ ene)( η 5 -penta ­ methyl ­ cyclo ­ penta ­ dien ­ yl)cobalt

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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 ethyl­ene 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(penta­dien­yl) 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 cyclo­penta­dienyl ligand and the two olefin ligands is 0.25 (12)°. In the crystal, mol­ecules are linked into chains by C—H⋯π inter­actions.

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Comparison diagram of the isostructural Cp*Co(CH2CH2)2 (left) and Cp*Fe(CH2CH2)2 (right) unit cells, viewed down the b axis.
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fig3: Comparison diagram of the isostructural Cp*Co(CH2CH2)2 (left) and Cp*Fe(CH2CH2)2 (right) unit cells, viewed down the b axis.

Mentions: The Cambridge Structural Database (CSD, Version 5.37; Groom et al., 2016 ▸) contains one additional example of a Cp*Cobis(olefin) complex: the Cp*Cobis(tri­methyl­vinyl­silane) complex (GIQHUJ) reported by Brookhart and co-workers (Lenges et al., 1998 ▸). The title compound is isostructural with the Cp*Fe(CH2CH2)2 complex (VOGJAD; Fig. 3 ▸) reported by Fürstner et al. (2008 ▸). The iron compound crystallizes in the monoclinic space group P21/c with unit-cell dimensions of a = 12.5561 (5), b = 7.3323 (3), c = 14.7157 (6) Å and β = 108.3520 (10)° at 100 K.


Crystal structure of bis ­ ( η 2 -ethyl ­ ene)( η 5 -penta ­ methyl ­ cyclo ­ penta ­ dien ­ yl)cobalt
Comparison diagram of the isostructural Cp*Co(CH2CH2)2 (left) and Cp*Fe(CH2CH2)2 (right) unit cells, viewed down the b axis.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5120712&req=5

fig3: Comparison diagram of the isostructural Cp*Co(CH2CH2)2 (left) and Cp*Fe(CH2CH2)2 (right) unit cells, viewed down the b axis.
Mentions: The Cambridge Structural Database (CSD, Version 5.37; Groom et al., 2016 ▸) contains one additional example of a Cp*Cobis(olefin) complex: the Cp*Cobis(tri­methyl­vinyl­silane) complex (GIQHUJ) reported by Brookhart and co-workers (Lenges et al., 1998 ▸). The title compound is isostructural with the Cp*Fe(CH2CH2)2 complex (VOGJAD; Fig. 3 ▸) reported by Fürstner et al. (2008 ▸). The iron compound crystallizes in the monoclinic space group P21/c with unit-cell dimensions of a = 12.5561 (5), b = 7.3323 (3), c = 14.7157 (6) Å and β = 108.3520 (10)° at 100 K.

View Article: PubMed Central - HTML - PubMed

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 ethyl­ene 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(penta­dien­yl) 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 cyclo­penta­dienyl ligand and the two olefin ligands is 0.25 (12)°. In the crystal, mol­ecules are linked into chains by C—H⋯π inter­actions.

No MeSH data available.


Related in: MedlinePlus