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Figure 2 The arrangement of the ions in the crystal structure, viewed along the a axis. The N–H⋯O and C–H⋯O hydrogen bonds are represented by dashed lines, the π-π contacts by dotted lines. H atoms not involved in interactions have been omitted. [Symmetry codes: (i) x + 1, y, z + 1; (ii) x, −y + , z + ; (iii) x, −y + , z − .] |