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, C <inf>14</inf>H<inf>15</inf>N<inf>3</inf>, (I), C<inf>12</inf>H <inf>9</inf>ClFN<inf>3</inf>, (II), and C<inf>13</inf>H<inf>12</inf>FN <inf>3</inf>, (III), each contain a triazene group (-N=N-NH-) having an extended conformation. The dihedral angles between the two benzene rings in (I), (II) and (III) are 4.3, 3.4 and 6.5°, 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) Å, respectively. In each compound, the molecules are linked by N-H⋯N hydrogen bonds to form chains and pack similarly in the crystal structures. © 2005 International Union of Crystallography.