Figure 2
The arrangement of the centrosymmetric anionic dimers (blocks) in ribbons. Adjacent blocks in each ribbon are connected by –CN⋯NC*– dipole–dipole and π–π interactions. The N2⋯C8ii distance is 3.370 (3) Å. Adjacent ribbons are interconnected via π–π interactions, forming an anionic wall. The interplanar distance is 3.34 Å. The shortest distances between atoms in adjacent layers are C5⋯N2iii of 3.246 (3) Å and C7⋯O1iv of 3.314 (3) Å. [Symmetry codes: (i) −x, 2 − y, 1 − z; (ii) 2 − x, 1 − y, 1 − z; (iii) 1 − x, 1 − y, 1 − z; (iv) 1 − x, 2 − y, 1 − z.] |