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Updated: Oct 11, 2026

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
Published on: March 20, 2017
A ferrocenyl-substituted pseudotitanocene complex
1Department of Inorganic Chemistry, Charles University, Hlavova 2030, 128 40 Prague 2, Czech Republic. stepnic@natur.cuni.cz.
Abstract:
The title compound, (eta(5)-cyclopentadienyl)[(1,2,3,4, 5-eta)-4-ferrocenyl-1,2,5,6-tetrakis(trimethylsilyl)cyclohexa-2, 4-dien-1-yl]titanium(II), [TiFe(C(5)H(5))(2)(C(23)H(42)Si(4))] or [Tieta(5)-C(6)H(2)Fe(eta(5)-C(5)H(4))(eta(5)-C(5)H(5))Si(CH(3))(3 )(4)(eta(5)-C(5)H(5))], possesses two directly linked metallocene units that subtend an angle of 52.9 (1) degrees (defined by the least-squares planes of the directly connected pi-ligands) associated with the steric requirements of the bulky trimethylsilyl substituents. The cyclohexadienyl ligand adopts an envelope conformation; the perpendicular distance of its eta(5)-plane to the Ti atom is 1.512 (1) A.
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