Is [Co4(H2O)2(α-PW9O34)2]10- a Genuine Molecular Catalyst in Photochemical Water Oxidation? Answers from Time-Resolved Hole Scavenging Experiments

Water oxidation catalysts: evolution of [Co 4(H 2O) 2(α-PW 9O 34) 2] 10- to catalytically active species is assessed by laser flash photolysis in sacrificial photocatalytic cycles with Ru(bpy) 3 2+ as a photosensitizer.