Figure 2
(a) The packing of the crystal by strong hydrogen bonds and (b) secondary interactions. Symmetry codes: (i) −x + , y − , −z + ; (ii) x + , −y + , z + ; (iii) −x + 1, −y + 1, −z + 1; (iv) −x + , y + , −z + ; (v) −x + , y + , −z + ; (vi) x + , −y + , z − ; (vii) x − 1, y + 1, z. |