Chetioui, Souheyla Rouag, Djamil-Azzeddine Djukic, Jean-Pierre Bochet, Christian G. Touzani, Rachid Bailly, Corinne Crochet, Aurélien Fromm, Katharina M. 2016-08-01 In the copper(II) complex, bis­{(<i>E</i>)-1-[(2,4,6-tri­bromo­phen­yl)diazen­yl]naph­thalen-2- olato}copper(II), [Cu(C₁₆</span>H₈</span>Br₃</span>N₂</span>O)₂], (I), the metal cation is coord­inated by two N atoms and two O atoms from two bidentate (<i>E</i>)-1-[(2,4,6-tri­bromo­phen­yl)diazen­yl]naphthalen-2-olate ligands, forming a slightly distorted square-planar environment. In one of the ligands, the tri­bromo­benzene ring is inclined to the naphthalene ring system by 37.4 (5)°, creating a weak intra­molecular Cu...Br inter­action [3.134 (2) Å], while in the other ligand, the tri­bromo­benzene ring is inclined to the naphthalene ring system by 72.1 (6)°. In the isotypic nickel(II) and palladium(II) complexes, namely bis­{(<i>E</i>)-1-[(2,4,6-tri­bromo­phen­yl)diazen­ yl]naphthalen-2-olato}nickel(II), [Ni(C₁₆H₈Br₃N₂O)₂], (II), and bis­{(<i>E</i>)-1- [(2,4,6-tri­bromo­phen­yl)diazen­yl]naphthalen-2-olato}palladium(II), [Pd(C₁₆</span>H₈</span>Br₃</span>N₂O)₂], (III), respectively, the metal atoms are located on centres of inversion, hence the metal coordination spheres have perfect square-planar geometries. The tri­bromo­benzene rings are inclined to the naphthalene ring systems by 80.79 (18)° in (II) and by 80.8 (3)° in (III). In the crystal of (I), mol­ecules are linked by C-H...Br hydrogen bonds, forming chains along [010]. The chains are linked by C-H...Pi inter­actions, forming sheets parallel to (011). In the crystals of (II) and (III), mol­ecules are linked by C-H...Pi inter­actions, forming slabs parallel to (10-1). For the copper(II) complex (I), a region of disordered electron density was corrected for using the SQUEEZE routine in <i>PLATON</i> [Spek (2015). <i>Acta Cryst.</i> C71, 9-18]. The formula mass and unit-cell characteristics of the disordered solvent mol­ecules were not taken into account during refinement. application/pdf https://folia.unifr.ch/global/documents/305272 https://folia.unifr.ch/documents/305272/files/fro_csc.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1107/S205698901601080X info:eu-repo/semantics/openAccess License undefined Acta Crystallographica Section E: Crystallographic Communications. - 2016, vol. 72, no. 8, p. 1093–1098 info:eu-repo/classification/udc/54 Crystal structures of a copper(II) and the isotypic nickel(II) and palladium(II) complexes of the ligand (E)-1-[(2,4,6-tri­bromo­phen­yl)diazen­yl]naphthalen-2-ol http://purl.org/coar/resource_type/c_6501