Conversion of atmospheric dioxygen to a µ–η22-peroxo bridge in a dinuclear uranium(VI) complex

Abstract
N, N-Ethylenebis(2-pyrrolidone)(ebpyrr) reacts with uranyl nitrate in acetonitrile, methanol, or nitromethane to form a helical chain polymer [UO2(NO3)2(ebpyrr)]n and, on exposure to air, also a dinuclear µ-η2, η2-peroxo-bridged complex {[(UO2)(NO3)(ebpyrr)]2(µ-O2)}.