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U. Schubert:
"Metal alkoxide derivatives: from basic coordination chemistry to applications";
Vortrag: XLI Congresso Nazionale della Divisione di Chimica Inorganica della Società Chimica Italiana, Università degli Studi di Parma, Parma, Italia (eingeladen); 03.09.2013 - 06.09.2013; in: "XLI Congresso Nazionale della Divisione di Chimica Inorganica della Società Chimica Italiana - Atti del Congresso", (2013), S. 17.

Transition metal alkoxide derivatives exhibit a rich coordination chemistry, which is governed by solvatation, oligomerization and ligand exchange equilibria. The main focus of our work is on derivatives of titanium and zirconium alkoxides with chelating and/or bridging ligands. Reactions with, for example, aminoalcohols, oximes, phosphonic acids or carboxylic acids were systematically investigated. Partially substituted derivatives and their primary hydrolysis products exhibit a rich structural chemistry. When organic compounds with two or more acidic groups (C=NOH, COOH, etc.) are reacted, metallacycles or coordination polymers can be obtained. Upon sol-gel processing of the metal alkoxide derivatives, the organic groups bonded to the metal center are incorporated in the metal oxide gels. This is particularly interesting if the bidentate ligands are substituted by functional organic groups. An example is the preparation of bimetallic gels, with a homogeneous dispersion of both metals, through functional coordinating ligands. Carboxylate-substituted mono- or bimetallic oxo clusters, formed in situ upon reaction of metal alkoxides with (functional) carboxylic acids are especially interesting, because they may serve as nanosized building blocks for the preparation of cluster-reinforced organic polymers, which have superior materials properties.