title: Powder X-ray investigation of 4,4'-diisocyano-3,3'-dimethyl-biphen-yl.
abstract: The title compound, C16H12N2, was investigated in a powder diffraction study and its structure refined utilizing the Rietveld Method. The mol-ecule has approximate C2 symmetry. The dihedral angle between the rings is 25.6 (7)°. The crystal packing is consolidated by weak C-H⋯C N hydrogen-bond-like contacts, which lead to the formation of a three-dimensional network. Further stabilization of the crystal structure is achived by weak non-covalent π-π inter-actions between aromatic rings, with a centroid-centroid distance of 3.839 (8) Å.
authors.affiliation: Department of Chemistry, Atomic Energy Commission of Syria (AECS), PO Box 6091, Damascus, Syrian Arab Republic.
authors.forename: Mwaffak
authors.initials: M
authors.lastname: Rukiah
authors.forename: Mahmoud
authors.initials: M
authors.lastname: Al-Ktaifani