Synthesis and Structure of (π-Arene)titanium(II) Haloaluminate Complexes with Diarylmethane Ligands

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Title:Synthesis and Structure of (π-Arene)titanium(II) Haloaluminate Complexes with Diarylmethane Ligands
Creators:
Kupfer, Volkmar
Mach, Karel
Thewalt, Ulf
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 65, 2, pp. 192-202
Uncontrolled Keywords:Arene complexes, Titanium, X-Ray diffraction, Crystal structure, Haloaluminates, Diarylmethane ligands

Abstract

Novel (arene)titanium(II) haloaluminate complexes (η<sup>6</sup>-arene)Ti[(μ-X)<sub>2</sub>AlX<sub>2</sub>]<sub>2</sub> (X = Cl, Br) were obtained from (η<sup>6</sup>-benzene)Ti[(μ-X)<sub>2</sub>AlX<sub>2</sub>]<sub>2</sub> (X = Cl, Br) complexes by ligand exchange reactions with bis(pentamethylphenyl)methane and dimesitylmethane. The [η<sup>6</sup>-1,2,3,4,5- pentamethyl-6-(2,3,4,5,6-pentamethylbenzyl)benzene]Ti[(μ-X)<sub>2</sub>AlX<sub>2</sub>]<sub>2</sub> (X = Cl, Br) and [η<sup>6</sup>-1,3,5- trimethyl-2-(2,4,6-trimethylbenzyl)benzene]Ti[(μ-Br)<sub>2</sub>AlBr<sub>2</sub>]<sub>2</sub> complexes containing titanium coordinated to only one of the two phenyl rings were obtained and their crystal structures were determined. (η<sup>6</sup>-Benzene)Ti[(μ-Cl)<sub>2</sub>AlCl<sub>2</sub>]<sub>2</sub> and dimesitylmethane afforded the (η<sup>6</sup>-mesi- tylene)Ti[(μ-Cl)<sub>2</sub>AlCl<sub>2</sub>]<sub>2</sub> complex which is isotypic with the known bromo analogue. This product shows that Friedel-Crafts scission of aryl-alkyl bonds occurs in such systems even under mild conditions. <p>

Title:Synthesis and Structure of (π-Arene)titanium(II) Haloaluminate Complexes with Diarylmethane Ligands
Creators:
Kupfer, Volkmar
Mach, Karel
Thewalt, Ulf
Uncontrolled Keywords:Arene complexes, Titanium, X-Ray diffraction, Crystal structure, Haloaluminates, Diarylmethane ligands
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:65
Number:2
Page Range:pp. 192-202
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc20000192UNSPECIFIED
ID Code:1635
Item Type:Article
Deposited On:06 Feb 2009 17:11
Last Modified:06 Feb 2009 16:11

Citation

Kupfer, Volkmar; Mach, Karel; Thewalt, Ulf (2000) Synthesis and Structure of (π-Arene)titanium(II) Haloaluminate Complexes with Diarylmethane Ligands. Collection of Czechoslovak Chemical Communications, 65 (2). pp. 192-202. ISSN 0010-0765

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