The growth of hexagonal bipyramids and X- and polycrystal-shaped twins of cholic acid during acidic hydrolysis of its ester hydrogel†
Abstract
In this paper, hexagonal bipyramids and X- and polycrystal-shaped twins of cholic acid are acquired through the acidic hydrolysis of its ester hydrogel. The growth mechanism is proposed on the basis of the hydrophobic swallowtail-shaped tetramers found in the single-crystal structure.