Figure 4
A partial packing diagram of compound (II) viewed approximately along the b axis, showing a hydrogen-bonded tape structure formed by acid molecules and pairs of base molecules. O—H⋯O and N—H⋯O hydrogen bonds are shown by light-blue dotted lines. [Symmetry codes: (i) −x + 1, −y + 1, −z + 1; (iii) −x + , −y + , −z + 1.] |