Figure 2Structural optimization for the interaciton of oxygen-containing intermediates (RO·, ROO·) on Zn2+. (a) Zn(RO·)2+, (b) Zn(RO·)22+, (c) Zn(RO·)32+, (d) Zn(ROO·)2+, (e) Zn(ROO·)22+ and (f) Zn(ROO·)32+.