Figure 4
The packing of (II) in the unit cell, viewed down the c axis. The discrete hydrogen-bonded tetrameric units are shown (dashed lines). Also illustrated are the π-bonding associations between the two 5-NSA adduct molecules (A and C). [Symmetry codes: (iii) 1 − x, y − , 1 − z; for others, see Table 2.] |