Crystal structure of 4,4 '-diethynylbiphenyl

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)degrees, respectively. In the crystal, weak C-H center dot center dot center dot pi (ring) interactions, augmented by even weaker C C-H center dot center dot center dot pi(alkyne) contacts, generate a three-dimensional network structure with interlinked columns of molecules formed along the c-axis direction.