Molecular and Crystal Structure ofP-Ethoxybenzylidene-P-N-Butylaniline (EBBA): Preliminary Data onP-Methoxybenzylidene-Cyanoaniline (MBCA)

Abstract

Single crystal X-ray diffraction studies have revealed the detailed molecular structure of EBBA, whilst giving some insight into the packing of MBCA. The molecules lie in long chains with their long axes parallel, and pack together as in the ideal nematic mesophase. Crystals of EBBA are Monoclinic, Space Group P2₁/c. a = 7.943(1), b = 5.623(4), c = 37.376(19)Å, β = 92.20(4)^O, z = 4. R(R′) = 0.082(0.060) for 951 data, I ≥ 2σ (I). Crystals of MBCA are Triclinic, Space Group , a = 11.575(5), b = 5.036(4), c = 11.338(5)Å, α = 89.79(6), β = 108.14(4), γ = 95.82(5)^O, z = 2.