Collect. Czech. Chem. Commun. 1997, 62, 1551-1561

Synthesis and Crystal Structures of Dimeric Titanium(II) Bis(trimethylsilyl)acetylene Complexes [(C5H5-nMen)Ti(η2-Me3SiC≡CSiMe3)(μ-Cl)]2(n = 3-5)

Jörg Hillera, Ulf Thewalta, Jaroslav Podlahab, Vladimír Hanušc and Karel Machc

a Sektion für Röntgen- und Elektronenbeugung, Universität Ulm, 89069 Ulm, Germany
b Department of Inorganic Chemistry, Charles University, 128 40 Prague 2, Czech Republic
c J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, 182 23 Prague 8, Czech Republic


Crystalline Ti(II) complexes [(C5H5-nMen)Ti(η2-Me3SiC≡CSiMe3)(μ-Cl)]2 (n = 3-5) (1-3) were prepared by reduction of the appropriate cyclopentadienyltitanium trichlorides (C5H5-nMen)TiCl3 in tetrahydrofuran by one equivalent of magnesium in the presence of at least one equivalent of bis(trimethylsilyl)acetylene. The X-ray structure analyses of 1-3 revealed that all compounds form chlorine-bridged centrosymmetric dimers.

Keywords: Sandwich complexes; Metallocenes; Titanocenes; Cyclopentadienyltitanium(II) complexes; Chlorine-bridged complexes; Bis(trimethylsilyl)acetylene ligand; Crystal structures.