organic compounds
Open access
The title compound, C12H23NO2·0.5H2O, crystallized with two 2-(1-amino-4-tert-butylcyclohexyl)acetic acid molecules, which are present as zwitterions, and one water molecule in the asymmetric unit. The molecular structure of each zwitterion is stabilized by an intramolecular six-membered (C6 ) N—HO hydrogen bond. In the crystal, the two independent zwitterions are linked head-to-head by N—HO hydrogen bonds. Further O—HO and N—HO hydrogen bonds link the zwitterions and the water molecules, forming sandwich-like layers, with a hydrophilic filling and a hydrophobic exterior, lying parallel to the ab plane.
organic compounds
Open access
In the title compound, C20H13ClO3, the dihedral angles between the benzoate and the chlorobenzene and benzoyl rings are 68.82 (5) and 53.76 (6)°, respectively, while the dihedral angle between the benzoyl and benzoate rings is 81.17 (5)°. The eight atoms of the benzoyl residue are essentially planar with the exception of the O atom which lies 0.1860 (5) Å out of their mean plane (r.m.s. deviation = 0.97 Å). The nine atoms of benzoate residue are also essentially planar (r.m.s. deviation = 0.20 Å) with the ester O atom showing the greatest deviation [0.407 (12) Å] from their mean plane. In the crystal, molecules are connected into centrosymmetric dimers by pairs of C—HO hydrogen bonds.