Figure 4
A view of the molecular packing down (a) the c axis in crystals of (II) and (b) the b axis in crystals of (I). Dotted lines represent hydrogen-bonding interactions, some of which (shown in Fig. 3) have been omitted for clarity. [Symmetry codes: (i) x + , −y + 1, z; (vi) −x, −y + 1, z + ; (xiii) x + 2, y + , −z + 1; (xiv) −x + 2, y − , −z + 1; (xv) −x + 1, y + , −z + 1; (xvi) −x + 1, y − , −z + 1.] |