Crystal structure of 4,4′-diethynylbiphenyl

Abstract

The title compound, C16H10, crystallizes with four unique molecules, designated 1–4, in the asymmetric unit of the monoclinic unit cell. None of the molecules is planar, with the benzene rings of molecules 1–4 inclined to one another at angles of 42.41 (4), 24.07 (6), 42.59 (4) and 46.88 (4)°, respectively. In the crystal, weak C—H...π(ring) interactions, augmented by even weaker C[triple-bond]C—H...π(alkyne) contacts, generate a three-dimensional network structure with interlinked columns of molecules formed along thec-axis direction.