1,3-Bis(4-methylphenyl)triazene, 1-(4-chlorophenyl)-3-(4-fluorophenyl)triazene and 1-(4-fluorophenyl)3-(4-methylphenyl)triazene

Abstract

The title 4,4'-disubstituted diphenyl-1,3-triazines, C14H15N3, (I), C12H9ClFN3, (II), and C13H12FN3, (III), each contain a triazene group (-N=N-NH-) having an extended conformation. The dihedral angles between the two benzene rings in (1), (II) and (III) are 4.3, 3.4 and 6.5 degrees, respectively. The molecules are almost entirely planar, with maximum deviations from the mean planes of 0.1087 (2), -0.1072 (7) and 0.1401 (3) angstrom, respectively. In each compound, the molecules are linked by N-H center dot center dot center dot N hydrogen bonds to form chains and pack similarly in the crystal structures.