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Heterodinuclear TiMo and TiW complexes bridged by the (dimethylsilanediyl) dicyclopentadienyl ligand

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Authors
Calvo Pérez, MercedesUniversity of Alcalá Author; Gómez Sal, Pilar; Manzanero Castillo, AntonioUniversity of Alcalá Author; Royo Gracia, PascualUniversity of Alcalá Author
Identifiers
Permanent link (URI): http://hdl.handle.net/10017/4281
DOI: 10.1016/S0277-5387(97)00494-4
ISSN: 0277-5387
Publisher
Pergamon
Date
1998
Affiliation
Universidad de Alcalá. Departamento de Química Inorgánica
Funders
Comunidad Autónoma de Madrid
Bibliographic citation
Polyhedron, 1998, v.17, n.7, p.1081-1089
Keywords
Heterodinuclear complexes
Titanium-molybdenum
Titanium-tungsten
Cyclopentadienyl
Project
PB-920178C (Ministerio de Educación y Cultura)
I+D 0033/94 (Comunidad Autónoma de Madrid)
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/publishedVersion
Publisher's version
http://dx.doi.org/10.1016/S0277-5387(97)00494-4
Rights
© Elsevier, 1998
Access rights
info:eu-repo/semantics/openAccess
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Abstract
Reactions of the tricarbonyl-molybdenum and -tungsten complexes [M(CO)3(MeCN)3] (M = Mo, W or [Mo(CO)3(mesitylene)] with equimolar amounts of [Ti(η5-Cp′){(η5-C5H3)(SiMe2)2 (C5H4)}Cl2] (Cp′ = C5H5, C5Me5) lead to the heterodinuclear compounds [Ti(η5-Cp′)Cl2{μ-[(SiMe2)2(η5-C5H3)2]}MH(CO)3]. These dinuclear complexes are isolated as single cis- and trans-isomers or as mixtures of both depending on the starting complex and the reaction conditions. The molar ratio of the two resulting isomers is controlled by thermodynamic and kinetic factors which prevent the application of stereoselective methods for some of the products. Reaction of the hydrido cis- and trans-complexes with CCl4 in CH2Cl2 allows the isolation of chloro complexes [Ti(η5-Cp′)Cl2{μ-[(SiMe2)2(η5-C5H3)2]} MCl(CO)3] of the same configuration. All of the new heterodinuclear compounds reported were characterized by their analytical composition, IR and NMR spectroscopy and the molecular structure of cis-[Ti(η5-C5Me5)Cl2{μ-[(SiMe2)2(η5-C5H3)2]}WH(CO)3] was studied by X-ray diffraction methods.
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