Acta Cryst. (2009). E65, o719  [ doi:10.1107/S1600536809008034 ]

1,3-Bis(2-ethoxyphenyl)triazene

M. K. Rofouei, M. R. Melardi, Y. Salemi and S. R. Kazemi

Abstract: The title compound, C₁₆H₁₉N₃O₂, exhibits a trans geometry about the N=N double bond in the triazene unit in the solid state, and individual molecules 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 intermolecular N-HN hydrogen bonds lead to the formation of dimers with an R₂²(8) graph-set motif. The steric demands of the ethoxy groups in the ortho position prevent a coplanar arrangement of the two molecules in the dimers and these instead consist of two interlocked molecules that are related by a non-crystallographic pseudo-twofold rotation axis. Weak C-H interactions between the CH groups and the aromatic phenyl rings also occur.

Online 11 March 2009

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