1,4-Bis(p-tolylethynyl)benzene.

The rod-like molecule of the title hydrocarbon, C24H18, is centrosymmetric, with the centroid of the central benzene ring residing on an inversion center. The molecules display a planar conformation of the benzene rings and aggregate into stacks along the [010] direction via Csp(3)-H...pi(arene) interactions, thus forming a stair-like pseudo-two-dimensional network. Each molecule acts as both a C-H hydrogen donor and a pi-arene acceptor, forming four hydrogen bonds per molecule.