| Summary: | The title compound, C20H16N2O6 (systematic name: 4-hydroxyphenyl N-{4-[(4-hydroxyphenoxycarbonyl)amino]phenyl}carbamate), contains two urethane groups substituting the central benzene ring in para positions. The molecule is centrosymmetric, and displays a twisted conformation for the three aromatic rings [the dihedral angle between central benzene ring and the urethane group is 33.4 (6)°, and that between the latter and the terminal ring is 65.1 (1)°]. In the crystal, a three-dimensional framework is formed through O—H...O and N—H...O hydrogen bonds involving the hydroxy and urethane functional groups, respectively.
|
|---|