title: Crystal structure of 1,1'-[selanediyl-bis(4,1-phenyl-ene)]bis-(2-chloro-ethan-1-one).
abstract: In the title mol-ecule, C16H12Cl2O2Se, the C-Se-C angle is 100.05 (14)°, with the dihedral angle between the planes of the benzene rings being 69.92 (17)°. The average endocyclic angles (Se-Car-Car; ar = aromatic) facing the Se atom are 120.0 (3) and 119.4 (3)°. The Se atom is essentially coplanar with the benzene rings, with Se-Car-Car-Car torsion angles of -179.2 (3) and -179.7 (3)°. In the crystal, mol-ecules are linked via C-H⋯O hydrogen bonds forming chains propagating along the a-axis direction. The chains are linked via C-H⋯π inter-actions, forming a three-dimensional network.
authors: Laboratoire de Cristallographie, Département de Physique, Université Mentouri-Constantine, 25000 Constantine, Algeria.
authors: Hazem
authors: H
authors: Bouraoui
authors: Laboratoire de Cristallographie, Département de Physique, Université Mentouri-Constantine, 25000 Constantine, Algeria.
authors: Ali
authors: A
authors: Boudjada
authors: Laboratoire de Cristallographie, Département de Physique, Université Mentouri-Constantine, 25000 Constantine, Algeria.
authors: Noudjoud
authors: N
authors: Hamdouni
authors: Laboratoire VAREN, Département de chimie, Faculté des Sciences Exactes, Université Mentouri-Constantine, 25000 Constantine, Algeria.
authors: Youcef
authors: Y
authors: Mechehoud
authors: UMR 6226 CNRS-Université Rennes 1 'Sciences Chimiques de Rennes', Equipe 'Matière Condensée et Systèmes Electroactifs', 263 Avenue du Général Leclerc, F-35042 Rennes, France.
authors: Jean
authors: J
authors: Meinnel
keywords: C—H⋯O hydrogen bonds; crystal structure; organoselenium; selenium