4-(E)-2-[3-(3-[(E)-2-(4-Cyanophenyl)-1-diazenyl]perhydrobenzo[d]imidazo-1- ylmethyl)perhydrobenzo[d]imidazol-1-yl]-1-diazenylbenzonitrile: X-ray crystal structure

摘要

4-(E)-2-[3-(3-[(E)-2-(4-Cyanophenyl)-1-diazenyl] perhydrobenzo[d] imidazol-1-ylmethyl) perhydrobenzo[d] imidazol-1-yl]-1-diazenylbenzonitrile (1) has been synthesized by reaction of p-cyanobenzene diazonium chloride with a mixture of formaldehyde and trans-1,2-cyclohexanediamine. The crystal structure has been determined by single crystal X-ray diffraction analysis. The bis-triazene ( 1) does not adopt a folded conformation, unlike previously studied ethylenediamine analogues, and there is no indication of pi-stacking in the crystal packing. The dominant interaction between molecules is the van der Waal's attraction between cyclohexane rings. This result establishes the structure of the product of this diazonium coupling reaction as the 1-(1-imidazolidinylmethyl) imidazolidine derivative and not the alternate tetraazabicyclo[4.4.1] undecane derivative. Crystal data: 1 C29H34N10, orthorhombic, space group Pbca, a = 17.946(1), b = 13.106(1), c = 24.108(1) Angstrom, V = 5670.6(3) Angstrom(3), for Z = 8. [References: 10]