Synthesis and Crystal Structure of (Trimethylsilyl)acetylide-Bridged Dimeric Titanocene

Author:

Gyepes Róbert,Štěpnička Petr,Thewalt Ulf,Polášek Miroslav,Čejka Jiří,Horáček Michal,Mach Karel

Abstract

Dimeric titanocene [(μ-η55-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-η55-C10H8)(μ-H)(μ-η12-C≡CSiMe3){(η5-C5H5)Ti}2] (2) and [(μ-η55-C10H8){(μ-η12-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.

Publisher

Institute of Organic Chemistry & Biochemistry

Subject

General Chemistry

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