title: Crystal structure of bis-(μ2-tetra-bromo-phthalato-κ(2) O (1):O (2))bis[aqua(N,N,N',N'-tetra-methyl-ethane-1,2-di-amine-κ(2) N,N')copper(II)].
abstract: In the title complex, [Cu2(C8Br4O4)2(C6H16N2)2(H2O)2], the Cu(II) cation is chelated by a tetra-methyl-ethane-1,2-di-amine ligand and coordinated by a water mol-ecule as well as bridged by two tetra-bromo-phthalate anions in a distorted O3N2 trigonal-bipyramidal geometry. The two symmetry-related tetra-bromo-phthalate anions bridge the two Cu(II) cations, forming a centrosymmetric dinuclear complex in which the Cu⋯Cu separation is 5.054 (2) Å. Intra-molecular classic O-H⋯O hydrogen bonds and weak C-H⋯O hydrogen bonds occur in the dinuclear mol-ecule. In the crystal, the mol-ecules are linked by weak C-H⋯Br and C-H⋯O inter-actions into supra-molecular chains propagating along the b-axis direction.
authors.affiliation: Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Instituto de Química, Universidad Nacional Autónoma de México, Carretera Toluca-Atlacomulco, Km 14.5 CP 50200 Toluca, Estado de México, México.
authors.forename: Luis Manuel
authors.initials: LM
authors.lastname: Tobón-Trujillo
authors.affiliation: Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Instituto de Química, Universidad Nacional Autónoma de México, Carretera Toluca-Atlacomulco, Km 14.5 CP 50200 Toluca, Estado de México, México.
authors.forename: Luis Felipe
authors.initials: LF
authors.lastname: Villanueva-Sánchez
authors.affiliation: Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Instituto de Química, Universidad Nacional Autónoma de México, Carretera Toluca-Atlacomulco, Km 14.5 CP 50200 Toluca, Estado de México, México.
authors.forename: Diego
authors.initials: D
authors.lastname: Martínez-Otero
authors.affiliation: Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Instituto de Química, Universidad Nacional Autónoma de México, Carretera Toluca-Atlacomulco, Km 14.5 CP 50200 Toluca, Estado de México, México.
authors.forename: Alejandro
authors.initials: A
authors.lastname: Dorazco-González
keywords: copper(II) complex; crystal structure; hydrogen bonding; tetra­bromo­phthalate anion; tetra­methyl­ethane-1,2-di­amine