Table 1. Centroid-to-centroid distances (Å).

Cg1, Cg2, Cg3, Cg4, Cg5 and Cg6 are the centroids of N2/C6/C9–C12, N3/C13–C17, N4/C18/C21–C24, C4–C9, C16–C21 and C25–C30, respectively

Cg1⋯Cg4i	3.734 (7)
Cg1⋯Cg6ii	3.937 (6)
Cg2⋯Cg6iii	3.525 (5)
Cg3⋯Cg3iv	3.900 (7)
Cg4⋯Cg4i	3.533 (7)
Cg5⋯Cg5v	3.606 (7)

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) ; (v) .