Heptane-1,7-diaminium dinitrate.
In the title molecular salt, C(7)H(20)N(2) (2+)·2NO(3) (-), the crystal structure exhibits an unusual back-to-back paired double-stacked packing arrangement culminating in an overall double zigzag pattern of the dications. The nitrate anions form a ring around one pair of double-stacked dications. An intricate three-dimensional N-H⋯O and N-H⋯(O,O) hydrogen-bonding network exists in the crystal structure.
University of Johannesburg, Department of Chemistry, PO Box 524, Auckland Park, Johannesburg 2006,  South Africa.
Charmaine
C
Arderne