Synthesis and molecular structures of some new titanium(IV) aryloxides. |
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Authors: | K Gigant A Rammal M Henry |
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Institution: | Laboratoire de Chimie Moléculaire de l'Etat Solide, Université Louis Pasteur, Institut le Bel, 4, Rue Blaise Pascal, 67070 Strasbourg Cedex, France. |
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Abstract: | The coordination chemistry of model phenolic ligands (pyrocatechol, salicylic acid, and 2,2'-biphenol) that are able to form respectively five-, six-, or seven-membered rings with titanium(IV) alkoxides is investigated. With pyrocatechol, a polynuclear complex containing 10 Ti atoms was characterized with a not very common doubly bridging mu3-(O,O,O',O') coordination mode. With salicylic acid, a monomeric tris(chelate) complex was obtained. With 2,2'-biphenol, a polynuclear complex containing six Ti atoms was obtained showing both mu2-(O,O') and mu2-(O,O,O') coordination modes for the ligands. Intermolecular interactions in the solid state for these three new compounds are also quantitatively discussed using the partial charge model. |
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