title: Crystal structure of di-μ-hydroxido-bis-[aqua-(1,10-phenanthroline-κ(2) N,N')copper(II)] naphthalene-2,6-di-carboxyl-ate hexa-hydrate.
abstract: In the title compound, [Cu2(OH)2(C12H8N2)2(H2O)2](C12H6O4)·6H2O, the two hydroxide groups bridge the two Cu(II) cations, forming a centrosymmetric binuclear complex cation, in which the Cu(II) cation is coordinated by a 1,10-phenanthroline (phen) mol-ecule, one water mol-ecule and two bridging hydroxide O atoms in a distorted N2O3 square-pyramidal coordination geometry. The naphthalene-2,6-di-carboxyl-ate anion is also located on an inversion centre. In the crystal, O-H⋯O hydrogen bonds link the cations, anions and lattice water mol-ecules into a three-dimensional supra-molecular architecture. Extensive π-π stacking is observed between the parallel or nearly parallel aromatic rings of adjacent phen ligands and naphthalenedi-carboxyl-ate anions, the centroid-to-centroid distances ranging from 3.4990 (16) to 3.8895 (16) Å.
authors.affiliation: UVM Campus Toluca, Avenida las Palmas Poniente No. 439 San Jorge Pueblo Nuevo, CP 52164, Metepec, Estado de México, Mexico.
authors.forename: Daniela
authors.initials: D
authors.lastname: Arias-Zárate
authors.affiliation: Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Cd. México, 04510, Coyoacán, México D.F., Mexico.
authors.forename: María Fernanda
authors.initials: MF
authors.lastname: Ballesteros-Rivas
authors.affiliation: Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Cd. México, 04510, Coyoacán, México D.F., Mexico.
authors.forename: Rubén A
authors.initials: RA
authors.lastname: Toscano
authors.affiliation: Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Cd. México, 04510, Coyoacán, México D.F., Mexico.
authors.forename: Jesús
authors.initials: J
authors.lastname: Valdés-Martínez
keywords: binuclear copper(II) complex; crystal engineering; crystal structure; hydrogen bonding; π–π stacking