Figure 3
A view of polymorph (Ia) down the crystallographic b axis, showing N—H⋯O hydrogen-bonded chains (short dashed lines) that are linked by π–π intermolecular interactions (long dashed lines). [Symmetry codes: (i) x − , y, −z + ; (ii) −x + 2, −y + 1, −z + 1.] |