Cis- and trans-titanium complexes with doubly silyl-bridged dicyclopentadienyl ligands: molecular structure of [(TiCl)2 (μ-0) {(SiMe2)2(η5-C5H3)2}]2 (μ-O)2
Authors
Cano Sierra, Ana María; Cano Sierra, JesúsIdentifiers
Permanent link (URI): http://hdl.handle.net/10017/4248DOI: 10.1016/S0020-1693(98)00170-4
ISSN: 0020-1693
Publisher
Elsevier
Date
1998Funders
Universidad de Alcalá
Bibliographic citation
lnorganica Chimica Acta, 1998, v.280, n.1-2, p.1,3-7
Keywords
Crystal structures
Titanium complexes
Silyl-bridged cyclopentadienyl complexes
Project
92-0178-C (Dirección General de Investigación Científica y Técnica)
info:eu-repo/COST/D2103192
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/publishedVersion
Publisher's version
http://dx.doi.org/10.1016/S0020-1693(98)00170-4Rights
© Elsevier, 1998
Access rights
info:eu-repo/semantics/openAccess
Abstract
The reaction of TiCl4 with Li2[(SiMe2)2(η5-C5H3)2] in toluene at room temperature afforded a mixture of cis- and trans-[(TiCl3)2{(SiMe2)2(η5-C5H3)2}] in a molar ratio of Full-size image (<1 K) after recrystallization. The complex trans-[(TiCl3)2{(SiMe2)2(η5-C5H3)2}] was hydrolyzed immediately by the addition of water to THF solutions to give trans-[(TiCl2)2(μ-O){(SiMe2)2(η5-C5H3)2}] as a solid insoluble in all organic solvents, whereas hydrolysis of cis-[(TiCl3)2{(SiMe2)2(η5-C5H3)2}] under different conditions led to the dinuclear μ-oxo complex cis-[(TiCl2)2)(μ-O){(SiMe2)2(η5-C5H3)2}] and two oxo complexes of the same stoichiometry [(TiCl)2(μ-O){(SiMe2)2(η5-C5H3)2}]2(μ-O)2 as crystalline solids. Alkylation of cis- and trans-[(TiCl3)2{(SiMe2)2(η5-C5H3)2}] with MgCIMe led respectively to the partially alkylated cis-[(TiMe2Cl)2{(SiMe2)2(η5-C5H3)2}] and the totally alkylated trans-[(TiMe3)2{(SiMe2)2(η5-C5H3)2}] compounds. The crystal and molecular structure of the tetranuclear oxo complex [(TiCl)2(μ-O){(SiMe2)2(η5-C5H3)2}]2(μ-O)2 was determined by X-ray diffraction.
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