Crystal Structure of 2, 8, 14, 20-tert-butylpyrogallol[4]arene

摘要

The aromatic derivative 2, 8, 14, 20-tert-butylpyrogallol[4]arene was synthesized by the acid catalyzed condensation of pivalaldehyde and pyrogallol in refluxing aqueous ethanol. Single crystal X-ray analysis revealed that the molecule crystallizes in the monoclinic crystal system; space group: P2(1)/c. Unit cell dimensions: a = 11.1175(7) angstrom, alpha = 90 degrees, b = 23.4525(15) angstrom,beta = 101.6720(10)degrees, c = 21.9595(14) angstrom, gamma = 90 degrees, D-calc = 1.205 Mg/m(3) g/m(3) for Z = 4. In the solid state, the macrocycle is found to adopt a crown structure that is unique for the rcct conformation.