Simple amphiphilic liquid crystalline N-alkylimidazolium salts. A new solvent system providing a partially ordered environmentCrystal data for [C14H29-imH][NO3]: C17H33N3O3, M = 303.44, triclinic, a = 8.962(3), b = 19.793(18), c = 22.363(7) Å, α = 99.606(17), β = 92.371(18), γ = 98.307(18)°, V = 3862(2) Å3, T = 298 K, space group P, Z = 10, μ = 0.090 mm−1, σcalcd = 1.305 mg m−3, 1.52 < θ < 25.00. Of 16247 reflections measured, 13442 were unique. Data were collected on a Siemens P4 diffractometer with graphite monochromatized Mo-Kα radiation (λ = 0.71073 Å) in ω scan mode. The structure was solved by direct methods and refined (based on F2 using all independent data) by full matrix least squares methods (Siemens SHELXTL V. 5.03). All the non-hydrogen atoms were refined anisotropically. The hydrogen atoms, located by Fourier difference synthesis, were isotropically refined with a common thermal parameter. R values are reported for R1 = 0.0505 (based on observed data, I > 2σ) and wR2 = 0.1390 (based on all data). CCDC 182/1768. See http://www.rsc.org/suppdata/cc/b0/b004462h/ for crystallographic files in .cif format. 1H-NMR (ppm, CDCl3, 25 °C): 0.87 (t, 3J = 7 Hz, –CH3, 3H), 1.25–1.32 (m, –CH2, 22H), 1.87 (m, –CH2, 2H), 4.28 (t, 3J = 7 Hz, –NCH2, 2H), 7.11 (s, CH, 1H), 7.40 (s, –CH, 1H), 9.36 (s, –CH, 1H), 15.53 (s, –NH, 1H). Anal. Calcd. for C17H33N3O3: C 62.35; H 10.16; N 12.83. Found: C 62.17; H 10.14; N 12.76%.

Abstract

Easily accessible liquid crystals of 1-alkylimidazolium salts having a bilayer structure, are good solvents providing a partially ordered reaction environment.