Collect. Czech. Chem. Commun.
1990, 55, 2447-2452
https://doi.org/10.1135/cccc19902447
The structure of (1-2:5-6-η-cycloocta-1,5-diene)-(η5-cyclopentadienyl)cobalt(I)
Jan Ondráčeka, Volker Schehlmannb, Jaroslav Maixnerc and Bohumil Kratochvíla
a Department of Solid State Chemistry, Prague Institute of Chemical Technology, 166 28 Prague 6, Czechoslovakia
b Institute of Organic Chemistry, University of Heidelberg, INF 270, 6900 Heidelberg, F.R.G.
c Central Laboratories of Prague Institute of Chemical Technology, 166 28 Prague 6, Czechoslovakia
Abstract
The structure of the title complex, C13H17Co(232.2), was determined by the heavy-atom method and anisotropically refined to the value R = 0.029 for 1 558 observed reflections (I > 1.96σ(I)). The substance crystallizes in the monoclinic space group P21/c; a = 12.6744(6), b = 7.3887(5), c = 11.4519(8) Å, β = 102.91(1)°, Z = 4. The molecule has the sandwich-arrangement, in which cycloocta-1,5-diene ring assumes the boat conformation. The bond distances to the Co atom, in the range of 2.010-2.025 Å, are short. The relatively strong interactions of the π-orbitals of the diolefin with the cyclopentadienyl-Co fragment is manifested in the elongation of the C=C bonds (1.411 and 1.412 Å).
