Figure 1
The molecular conformation and atom-labelling scheme for the two DNSA− anions (A and B), the benzidine monocation (C) and dication (D), and the disordered ethanol molecule of solvation (E) in (I). The dication lies across a crystallographic inversion centre [symmetry code: (viii) −x + 1, −y + 1, −z]. The intramolecular hydrogen bonds in anions A and B are shown as dashed lines. Displacement ellipsoids are drawn at the 30% probability level. |