N-carboxyl-DL-phenylalanine anhydride

Article abstract of DOI:10.1107/S0108270197004010

The N1-H1 imino group of the five-membered ring of the title compound, C₁₀H₉NO₃, forms intermolecular hydrogen bonds between O1 along the a axis and between O3 along the b axis. Thus, a two-dimensional hydrogen-bonding network forms a layer perpendicular to the c axis. The layer, which consists of one of two independent molecules, stacks alternately along the c axis and produces a sandwich structure.