Description:
<jats:p>The title compound, C<jats:sub>21</jats:sub>H<jats:sub>25</jats:sub>NO<jats:sub>3</jats:sub>, crystallized as a racemic twin in the Sohnke space group <jats:italic>P</jats:italic>2<jats:sub>1</jats:sub>. In the molecular structure of the title compound, both enantiomers show a highly similar conformation with the urethane function and the benzoyl group showing an almost perpendicular arrangement [the dihedral angle is 72.46 (8)° in the <jats:italic>S</jats:italic>-enantiomer and 76.21 (8)° in the <jats:italic>R</jats:italic>-enantiomer]. In the crystal structure, molecules of both enantiomers show infinite helical arrangements parallel to the <jats:italic>b</jats:italic> axis formed by weak C—H...O hydrogen bonds between the phenyl ring of the benzoyl group and the carbamate carbonyl group. In case of the <jats:italic>R</jats:italic>-enantiomer, this helix is additionally stabilized by a bifurcated hydrogen bond between the carbonyl function of the benzoyl group towards both phenyl groups of the molecule.</jats:p>