Figure 2
Intermolecular (8) hydrogen-bonding associations (shown as dashed lines) between 2,2′-disulfanylidene-5,5′-biimidazolidinylidene-4,4′-dione molecules and peripheral hydrogen-bond extensions in the A and B ribbon structures of (I) , with non-associated H atoms omitted for clarity. For symmetry codes, see Table 2 . |