Crystal structure of [μ-2,2'-bis(1H-imidazolyl)ether-k2N:N']copper(II) dinitrate, [Cu(C10H14N4O)2](NO3)2 - Zhang Lai-Ping; Kan Wei-Qiu; Liu Ying-Ying (Zeitschrift für Kristallographie - New Crystal Structures, 2010)