4-(<Emphasis Type="Italic">E</Emphasis>)-2-[3-(3-[(<Emphasis Type="Italic">E</Emphasis>)-2-(4-cyanophenyl)-1-diazenyl]hexahydro-1-pyrimidinylmethyl)hexahydro-1-pyrimidinyl]-1diazenylbenzonitrile: X-ray crystal structure

4-(E)-2-3-(3-(E)-2-(4-cyanophenyl)-1-diazenyl]hexahydro-1-pyrimidinylmethyl)hexahydro-1-pyrimidinyl]-1-diazenylbenzonitrile (1) has been synthesized by reaction of p-cyanobenzene diazonium chloride with a mixture of formaldehyde and 1,3-propanediamine. The crystal structure has been determined by single crystal X-ray diffraction analysis. The bis-triazene (1) adopts a folded conformation, similar to previously studied ethylenediamine analogues, and there is evidence of -stacking in the crystal packing. The two planar phenyltriazenyl groups are almost parallel, forming an angle of 6.6(1), and display weak intermolecular s interactions between molecules. This result establishes the structure of the product of this diazonium coupling reaction as the 1-(1-hexahydropyimidinylmethyl)hexahydropyrimidine derivative and not the alternate tetraazabicyclo5.5.1]tridecane derivative. Crystal data: 1C₂₃H₂₆N₁₀, monoclinic, space group P2₁/c, a = 10.717(1) Å, b = 7.749(1) Å, c = 28.252(2) Å, = 97.223(2), V = 2327.5(5) ų, for Z = 4.