This is iron III +, this is peroxo species, it got reduced to peroxo oxygen if you look at from the beginning oxygen itself is one electron reduced at this space and at this pace second electron reduced, but more importantly iron in this step remain iron III +.
इस कार्यविधि में मुख्य बात यह है कि आयरन III + अवस्था में ही रहता है।