Figure 8
(a) Part of the crystal structure of isomer (III) showing the formation of a sheet of R44(32) rings parallel to (102) generated by the N—H⋯O and C—H⋯O hydrogen bonds. For the sake of clarity, the H atoms not involved in the motifs shown have been omitted. The atoms marked with an asterisk (*), a hash (#), a dollar sign ($), an ampersand (&) or an `at' sign (@) are at the symmetry positions (x, −1 + y, z), (1 + x, 1 − y, − + z), (1 + x, −y, − + z), (x, 1 + y, z) and (1 + x, 2 − y, − + z), respectively. (b) Part of the crystal structure of isomer (III) showing the formation of a chain along [001] generated by the C—H⋯π(arene) hydrogen bond. For the sake of clarity, the H atoms not involved in the motif shown have been omitted. The atoms marked with an asterisk (*) or a hash (#) are at the symmetry positions (x, 1 − y, − + z) and (x, 1 − y, + z), respectively. |