Figure 1
The expanded asymmetric unit of (I). Displacement ellipsoids are drawn at the 50% probability level. Hydrogen bonds are shown as dotted lines. [Symmetry codes: (i) x, −y + , z − ; (ii) −x + 2, y + , −z + ; (iii) x − 1, −y + , z − ; (iv) x − 1, y, z.] |