Figure 3
Mutual bonding of CONH2 groups, which yields 21 helices propagating along the c-axis direction. Stacking interactions [e.g. N2⋯C1viii] are indicated with thin lines [symmetry codes: (v) −x, −y + 1, z + ; (vii) −x, −y + 1, − + z; (viii) x, y, z − 1]. |