Figure 3.
Kinetic scheme of basic two-quantum mechanism. Double arrows indicate light-activated processes with the quantum efficiencies Φ1 and Φ2 representing the first and second photooxidative events in the assembly sequence, kR representing the still ill-defined “dark” rearrangement, and kD1, kD2 representing the decay of intermediates. After the initial two Mn are photoligated, subsequent Mn appear to be added with high quantum yield.