Polyoxometalate Embedding of a Tetraruthenium(IV)-oxo-core by Template-Directed Metalation of γ-SiW10O368−: A Totally Inorganic Oxygen-Evolving Catalyst

Solid state and solution evidence confirms the embedding of an adamantane-like, Ru4O6 fragment by the divacant, gamma-decatungstosilicate ligand. The resulting complex catalyzes water oxidation to oxygen with TON up to 500 and TOF > 450 h-1.