Abstract
Synergistic action in a bimetallic nanosized catalyst: A bimetallic catalyst consisting of a flexible molecular cage with two Co(III) porphyrins is investigated to convert CO2 and epoxides into cyclic carbonates. The preorganisation of the two metal centres in the hollow framework favours their intramolecular cooperative action leading to superior catalytic performance than for a Co(III) meso-tetraphenylporphyrin.