Figure 3
Chains of molecules linked through hydrogen-bonding interactions (dotted lines) in the crystal structures of (a) (II) and (b) (I). The different colours represent the enantiomers of (II) in (a) (dark blue and light blue in the electronic version of the paper) and the independent molecules in the asymmetric unit of (I) in (b) (purple and light pink). H atoms not involved in hydrogen bonding have been omitted. [Symmetry codes: (ii) −x + , y, z + ; (iii) x + , −y, z; (iv) x − , −y, z; (v) −x, −y, z − ; (vii) −x + , y, z − ; (viii) −x + 2, y − , −z; (ix) −x + 2, y + , −z; (x) −x + 1, y + , −z; (xi) −x + 1, y − , −z; (xii) x, y − 1, z.] |