The Crystal and Molecular Structure of <i>dl</i>-2-<i>cis</i>-4-<i>trans</i>-Abscisic Acid

Abstract

Abstract The crystal and molecular structure of dl-2-cis-4-trans-abscisic acid has been determined by the X-ray method. The crystal is monoclinic, P21/c, with lattice parameters a=6.316(1), b=33.575(3), c=7.607(1) Å, and β=118.42(1)°. The molecule has two independent conjugated systems forming respective planes which are orthogonal to each other. The molecules form a dimer by the hydrogen bonding and are connected by the other hydrogen bonding along the c-axis.