Figure 3
A packing diagram for (I), showing the hydrogen-bonded sheet of molecules. Atoms labelled with an asterisk (*), dollar sign ($), hash (#) or `at' symbol (@) are at the symmetry positions (1 + x, 1 + y, 1 + z), (x, y, z − 1), (x, y, 1 + z) and (x, 1 + y, 1 + z), respectively. |