Synergy of Phenylsilsesquioxane and Pyridylpyrazolate Ligands in Hexacopper Cages: Approach to Catalytic Toluene Oxidation
Cage-like Cu6M2 (M = Li or Na) complexes, containing two pairs of ligands, Si5-cyclic silsesquioxanes and pyrazolylpyridines, have been obtained. Two central (Cu···Cu···Cu···M) tetramers are sandwiched by Si ligands, while pyrazolylpyridines behave simultaneously in chelating and bridging manners. Depending on the na...