The crystal structure determination of the title compound, C14H14N2O3,
reinvestigated using low-temperature X-ray diffraction data, confirms
the earlier report. However, the almost planar molecule is observed i
n a disordered state. Two partial molecules exist in unequal proportio
ns (75:25). They are related to one another through a pseudo-twofold a
xis of rotation contained in the molecular plane and normal to the mol
ecular axis. The dihedral angle between the two aromatic systems is 22
.1 (9)degrees.