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The title compound, C21H30N2O2·2(NO3), consists of a 17-membered diaza-crown ether ligand with two O and two N atoms, and two nitrate anions. It belongs to space group P21/a with cell parameters a = 14.0800(12), b = 10.3752(11), c = 15.7118(10)A and β = 94.058(10)°. The crystal structure is stabilized by intermolecular N-H…O hydrogen bonds between the nitrate O atoms and the N atoms of the macrocycle. The relative macrocyclic inner-hole size is estimated to be 2.07 A.

Crystal Structure of 3,4:11,12-dibenzo-5,10-dioxacycloheptadeca-1,14-diammonium dinitrate