Figure 5
N—H⋯O hydrogen-bonding patterns observed in structures (1), (2a) and (2b). Pattern (I) found in (1) (water molecules are well separated). Pattern (II) found in (2a) (O⋯O separation 3.07 Å). Patterns (III) and (IV) found in (2b) (O⋯O separations 3.00 and 4.55 Å, respectively). |