Collect. Czech. Chem. Commun.
1998, 63, 1884-1892
https://doi.org/10.1135/cccc19981884
Synthesis and Crystal Structure of (Trimethylsilyl)acetylide-Bridged Dimeric Titanocene
Róbert Gyepesa, Petr Štěpničkaa, Ulf Thewaltb, Miroslav Polášekc, Jiří Čejkac, Michal Horáčekc and Karel Machc
a Department of Inorganic Chemistry, Charles University, 128 40 Prague 2, Czech Republic
b Sektion für Röntgen- und Elektronenbeugung, Universität Ulm, D-89069 Ulm, Germany
c J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, 182 23 Prague 8, Czech Republic
Abstract
Dimeric titanocene [(μ-η5:η5-C10H8){(μ-H)(η5-C5H5)Ti}2] (1) reacts with one equivalent of (trimethylsilyl)acetylene (TMSA) to give a mixture of diamagnetic (trimethylsilyl)acetylide-bridged compounds [(μ-η5:η5-C10H8)(μ-H)(μ-η1:η2-C≡CSiMe3){(η5-C5H5)Ti}2] (2) and [(μ-η5:η5-C10H8){(μ-η1:η2-C≡CSiMe3)(η5-C5H5)Ti}2] (3), and some oligomers of TMSA. Compound 2 crystallizes from hexane in the triclinic space group P1 (No. 2; a = 9.385(4) Å, b = 14.487(6) Å, c = 18.085(6) Å, α = 110.34(2)°, β = 101.56(2)°, γ = 96.65(3)°, V = 2 212(2) Å3, Z = 2). A highly soluble compound 3 could not be isolated from a mixture with oligomers of TMSA.
Keywords: Sandwich complexes; Metallocenes; Titanocenes; Titanium; (Trimethylsilyl)acetylene oligomerization; Dimeric titanocene; (Trimethylsilyl)acetylide-bridged complex; Crystal structure.
