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Monocyclopentadienyl titanium complexes supported by functionalized carboxylate ligands |
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| Authors: | Rosa Fandos,Antonio Otero,Ana Rodrí guez,Sara Suizo,Pilar Terreros |
| Affiliation: | a Departamento de Química Inorgánica, Orgánica y Bioquímica, Universidad de Castilla-La Mancha, Instituto de Nanociencia, Nanotecnología y Materiales Moleculares (INAMOL), Facultad de Ciencias del Medio Ambiente. Avda. Carlos III, s/n, 45071 Toledo, Spain b Departamento de Química Inorgánica, Orgánica y Bioquímica, Universidad de Castilla-La Mancha, Facultad de Químicas, Avda. Camilo José Cela, 10, 13071 Ciudad Real, Spain c Departamento de Química Inorgánica, Orgánica y Bioquímica, Universidad de Castilla-La Mancha ETS Ingenieros Industriales. Avda. Camilo José Cela, 3, 13071 Ciudad Real, Spain d Servicio Interdepartamental de Apoyo a la Investigación, Facultad de Ciencias, Universidad Autónoma de Madrid, Spain e Instituto de Catálisis y Petroleoquímica, CSIC, Cantoblanco, 28049 Madrid, Spain |
| Abstract: | The reaction of [TiCp*Cl3] with [Fe(η5-C5H5)(η5-C5H4COOH)] in the presence of NEt3 yields [TiCp*{(OOC-C5H4)FeCp}3] (1), (Cp = η5-C5H5). The alkyl complex [TiCp*Me3] reacts with [FeCp(η5-C5H4-CH2COOH)] or anthranilic acid rendering the tris-carboxylate titanium complexes [TiCp*{(OOCCH2-C5H4)FeCp}3] (2) and [TiCp*{(OOCC6H4NH2)3] (3), respectively. Complex 3 can be protonated with triflic acid to render [TiCp*{(OOCC6H4NH2)3].HOTf (4). The reaction of [TiCp*Me3] with anthranilic acid in a 1:2 M ratio yields the alkyl carboxylate derivative [TiCp*Me{(OOCC6H4NH2)2] (5). Complex 5 reacts with tBuNC to render the iminoacyl complex [TiCp*(η2-MeCNtBu){(OOCC6H4NH2)2] (6). The reaction of [TiCp*Cl3] with the ferroceneacetic acid, gives [TiCp*Cl2{(OOCCH2-C5H4)FeCp}] (7). The [TiCp*Cl]2(μ-O)[(ΟΟC-C5H4)2Fe] (8) can be obtained by reaction of [TiCp*Cl3] with [Fe(η5-C5H4-COOH)2] in the presence of a base. The molecular structures of 1 and 8 have been established by X-ray diffraction methods. |
| Keywords: | Titanium Carboxylate Ferrocenyl ligands |
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