The First Molecular Complex Containing Two Azoarenes. The Crystal Structure of Decafluoroazobenzene/Azomesitylene (1 : 1)

Abstract

The crystal and molecular structures of the title compound, C₁₂F₁₀N₂.C₁₈H₂₂H₂,are reported. The crystal structure is comprised of stacks of alternate decafluoroazobenzene and azomesitylene molecules with the vertical separation between successive molecules being approximately 3.42 Å . The stacks are aligned so that the azobenzene molecules of one stack are adjacent to the azomesitylene molecules of the neighbouring stacks; there are no significant intercolumn contacts. Crystals are monoclinic, space group P2₁/n with unit cell dimensions a 7.197(2), b 15.432(3), c 12.513(3) Å , β 96.33(2)º , and Z 2. The structure was refined by a full-matrix least-squares procedure to final R 0.059 for 915 reflections for which 1 ≥ 3.O σ(I).