title: Crystal structure of bis-{1-[(E)-(2-meth-oxy-phen-yl)diazen-yl]naphthalen-2-olato-κ(3) O,N (2),O'}copper(II) containing an unknown solvate.
abstract: The title complex, [Cu(C17H13N2O2)2], crystallizes with two independent mol-ecules in the asymmetric unit. Each Cu(II) atom has a distorted ocahedral coordination environment defined by two N atoms and four O atoms from two tridentate 1-[(E)-(2-meth-oxy-phen-yl)diazen-yl]naphthalen-2-olate ligands. In the crystal, the two mol-ecules are linked via weak C-H⋯O hydrogen bonds which in turn stack parallel to [010]. A region of disordered electron density, most probably disordered methanol solvent molecules, was corrected for using the SQUEEZE routine in PLATON [Spek (2015). Acta Cryst. C71, 9-18]. Their formula mass and unit-cell characteristics were not taken into account during refinement.
authors.affiliation: Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale (CHEMS), Faculté des Sciences Exactes, Département de Chimie, Université Constantine 1, Constantine 25000, Algeria.
authors.forename: Souheyla
authors.initials: S
authors.lastname: Chetioui
authors.affiliation: Laboratoire de Cristallographie, Département de Physique, Université Constantine 1, Constantine 25000, Algeria.
authors.forename: Noudjoud
authors.initials: N
authors.lastname: Hamdouni
authors.affiliation: Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale (CHEMS), Faculté des Sciences Exactes, Département de Chimie, Université Constantine 1, Constantine 25000, Algeria.
authors.forename: Djamil-Azzeddine
authors.initials: DA
authors.lastname: Rouag
authors.affiliation: Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale (CHEMS), Faculté des Sciences Exactes, Département de Chimie, Université Constantine 1, Constantine 25000, Algeria.
authors.forename: Salah Eddine
authors.initials: SE
authors.lastname: Bouaoud
authors.affiliation: Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale (CHEMS), Faculté des Sciences Exactes, Département de Chimie, Université Constantine 1, Constantine 25000, Algeria.
authors.forename: Hocine
authors.initials: H
authors.lastname: Merazig
keywords: azo compounds; copper(II) complex; crystal structure; naphthalen-2-olate; octa­hedral coordination