Acta Cryst. (2013). E69, o748 [ doi:10.1107/S1600536813009550 ]
Abstract: The title compound, C13H13NO2, was previously described in space group P21/c by He et al. [Acta Cryst. (1993), C49, 2000-2002]. The ethyl group is disordered over two sets of sites in a 0.615 (10):0.385 (10) ratio. The C-O-C-C torsion angles containing the ethyl group are -111.6 (10) and 177.9 (7)°, while in the previously reported polymorph, the torsion angle is -167.3 (2)°. The molecules pack to form a three-dimensional structure in the ABAB style along the c-axis direction in the title compound, but parallel to the a-axis direction in the reported polymorph.
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