Purak Das, A. N. Biswas, S. Acharya
Mar 18, 2009
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Journal
Molecular Crystals and Liquid Crystals
Abstract
The molecular structure of 1-phenyl-3-{4-[4-(4-octyloxybenzoyloxy)-phenyloxycarbonyl]phenyl}triazene-1-oxide, a member of newly developed liquid crystalline homologous series, has been investigated by crystal X-ray crystallography at low temperature (100 K). The title compound crystallizes in the triclinic crystal class in the space group P with cell parameters a = 5.766(5) Å, b = 12.151(10) Å, c = 21.751(17) Å, α = 79.089(13)°, β = 88.646(14)°, γ = 84.278(14)°, V = 1489(2) Å3 for Z = 2. It establishes the N-oxide form of the triazene-1-oxide moiety. The overall molecule is not planar, the dihedral angles between pairs of adjacent benzene rings are 14.00 (10), 52.36 (07), and 50.57 (07)°. Intramolecular N–H…O hydrogen-bonding is present within the triazene-1-oxide moiety of the title compound. The compound forms inversion dimer via an intermolecular N–H…O and an intermolecular C–H…O links. The dimers are then linked into chains in a parallel fashion by C–H…O hydrogen bonds. The crystal packing is further stabilized by C–H…π interactions.