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

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Title:Synthesis and Crystal Structure of (Trimethylsilyl)acetylide-Bridged Dimeric Titanocene
Creators:
Gyepes, Róbert
Štěpnička, Petr
Thewalt, Ulf
Polášek, Miroslav
Čejka, Jiří
Horáček, Michal
Mach, Karel
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 63, 11, pp. 1884-1892
Uncontrolled Keywords:Sandwich complexes, Titanium, Titanocenes, Dimeric titanocene, Metallocenes, (Trimethylsilyl)acetylide-bridged complex, (Trimethylsilyl)acetylene oligomerization, Crystal structure

Abstract

Dimeric titanocene [(μ-η<sup>5</sup>:η<sup>5</sup>-C<sub>10</sub>H<sub>8</sub>){(μ-H)(η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)Ti}<sub>2</sub>] (<strong>1</strong>) reacts with one equivalent of (trimethylsilyl)acetylene (TMSA) to give a mixture of diamagnetic (trimethylsilyl)acetylide-bridged compounds [(μ-η<sup>5</sup>:η<sup>5</sup>-C<sub>10</sub>H<sub>8</sub>)(μ-H)(μ-η<sup>1</sup>:η<sup>2</sup>-C≡CSiMe<sub>3</sub>){(η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)Ti}<sub>2</sub>] (<strong>2</strong>) and [(μ-η<sup>5</sup>:η<sup>5</sup>-C<sub>10</sub>H<sub>8</sub>){(μ-η<sup>1</sup>:η<sup>2</sup>-C≡CSiMe<sub>3</sub>)(η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)Ti}<sub>2</sub>] (<strong>3</strong>), and some oligomers of TMSA. Compound <strong>2</strong> crystallizes from hexane in the triclinic space group <i>P</i>1 (No. 2; <i>a</i> = 9.385(4) Å, <i>b</i> = 14.487(6) Å, <i>c</i> = 18.085(6) Å, α = 110.34(2)°, β = 101.56(2)°, γ = 96.65(3)°, <i>V</i> = 2 212(2) Å<sup>3</sup>, <i>Z</i> = 2). A highly soluble compound <strong>3</strong> could not be isolated from a mixture with oligomers of TMSA.

Title:Synthesis and Crystal Structure of (Trimethylsilyl)acetylide-Bridged Dimeric Titanocene
Creators:
Gyepes, Róbert
Štěpnička, Petr
Thewalt, Ulf
Polášek, Miroslav
Čejka, Jiří
Horáček, Michal
Mach, Karel
Uncontrolled Keywords:Sandwich complexes, Titanium, Titanocenes, Dimeric titanocene, Metallocenes, (Trimethylsilyl)acetylide-bridged complex, (Trimethylsilyl)acetylene oligomerization, Crystal structure
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:63
Number:11
Page Range:pp. 1884-1892
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19981884UNSPECIFIED
ID Code:1427
Item Type:Article
Deposited On:06 Feb 2009 17:09
Last Modified:06 Feb 2009 16:09

Citation

Gyepes, Róbert; Štěpnička, Petr; Thewalt, Ulf; Polášek, Miroslav; Čejka, Jiří; Horáček, Michal; Mach, Karel (1998) Synthesis and Crystal Structure of (Trimethylsilyl)acetylide-Bridged Dimeric Titanocene. Collection of Czechoslovak Chemical Communications, 63 (11). pp. 1884-1892. ISSN 0010-0765

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