Structure of N,N '-bis[3-(aminocarbonyl)propyl] sulfamide

The title compound, C8H18N4O4S, possesses C-2 symmetry, with the S atom lyi ng on a twofold rotational axis in the unit cell. The sulfamide group of ea ch molecule forms four identical hydrogen bonds with those of its four neig hboring molecules, resulting in a rhombic two-dimensional hydrogen bonded n etwork. This network assembles in the third dimension via hydrogen bonds be tween the primary amide groups of the substituents that extend from the 2D sulfamide sheets. The primary amide groups form a hydrogen-bonded eight-mem bered cyclic dimer around a two-fold rotational axis. These cyclic dimers a re linked into a ribbonlike network via hydrogen bonding interaction betwee n the Irans-H and the carbonyl of the amide groups. The compound crystalliz es in C2/ca with a = 8.6162(1), b = 57716(1), c = 24.8344(b) Angstrom, beta = 96.298(1)degrees, D-calc = 1.441 g cm(-3), and Z = 4.