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Figure 2 . Extensive π⋯π stacking interaction between aromatic rings of 9-aminoAcr ions, (9-aminoAcr)+, with centroid-centroid distances ranging from 3.4897 (13)–3.8627 (15) Å. Cg denotes the ring centroid; Cg1=N2/C9-C13, Cg2=C15-C20, Cg3=N3/C15/C20-C22/C27, Cg4=C22-C27, Cg5=C35-C40, Cg6=N5/C28/C33-C35/C40, Cg7=C28-C33. [Symmetry codes: (i) 2-x, 2-y, 1-z; (ii) 2-x, 1-y, 2-z] |