1. Unité de Catalyse et de Chimie du Solide UMR CNRS 8181, Ecole Nationale Supérieure de Chimie, BP 90108, 59?652 Villeneuve d'Ascq Cedex (France), Fax: (+33)?320‐43‐67‐54;2. Anorganische Chemie, Universit?t Duisburg‐Essen, Universit?tsstrasse 5, 45117 Essen (Germany), Fax: (+49)?201‐183‐2621
Abstract:
Bound to stay heteroleptic : Grafting of homoleptic benzyl and amide calcium reagents onto silica affords well‐defined supported heteroleptic species, catalytically active in hydrosilylation, hydroamination, and styrene polymerization. The fact that attempts to generate a molecular model were thwarted by the Schlenk equilibrium affording the homoleptic compound (see scheme) emphasizes the importance of immobilization as an approach for the syntheses of heteroleptic calcium complexes.
