title: 1,3-Bis(2-ethoxy-phen-yl)triazene.
abstract: The title compound, C(16)H(19)N(3)O(2), exhibits a trans geometry about the N=N double bond in the triazene unit in the solid state, and individual mol-ecules are close to planar with r.m.s. deviations from planarity of 0.065 Å and 0.242 Å for the two independent molecules in the asymmetric unit. Distinct inter-molecular N-H⋯N hydrogen bonds lead to the formation of dimers with an R(2) (2)(8) graph-set motif. The steric demands of the eth-oxy groups in the ortho position prevent a coplanar arrangement of the two mol-ecules in the dimers and these instead consist of two inter-locked mol-ecules that are related by a non-crystallographic pseudo-twofold rotation axis. Weak C-H⋯π inter-actions between the CH groups and the aromatic phenyl rings also occur.
authors.forename: Mohammad Kazem
authors.initials: MK
authors.lastname: Rofouei
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Melardi
authors.forename: Yasaman
authors.initials: Y
authors.lastname: Salemi
authors.forename: Saba Razi
authors.initials: SR
authors.lastname: Kazemi