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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)[link]. 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.

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
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