3 years ago

Mono- and Binuclear Titanates Bearing Podand Diamidoamine Ligands and Their Use as Catalysts in Siloxane Cross-Linking

Mono- and Binuclear Titanates Bearing Podand Diamidoamine Ligands and Their Use as Catalysts in Siloxane Cross-Linking
Johann Klein, Andrea Gutacker, Esteban Mejía, Martha Höhne
The synthesis of titanium(IV) alkoxides bearing diamidoamide ligands was undertaken. We synthesized complexes bearing alkoxide ligands of varying size to assess the influence of the steric demand of the alkoxide ligands on the coordination/dissociation equilibria. Moreover, to evaluate the influence of the electronic properties of these ligands, we prepared analogues including electron-donating trimethylsilyl and electron-withdrawing tosyl N-substituents. Herein, we describe their synthesis, characterization, and coordination behavior as well as some of their decomposition products and catalytic performance in the condensation cross-linking of silicone prepolymers.

Publisher URL: http://dx.doi.org/10.1021/acs.organomet.7b00335

DOI: 10.1021/acs.organomet.7b00335

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