title: Two polymorphic forms of a mixed zinc/copper biquinoline dihydrogenphosphate.
abstract: Two polymorphic forms of a mixed zinc/copper biquinoline dihydrogenphosphate are presented, showing almost identical monomeric units, viz. (2,2'-biquinoline-kappa(2)N,N')bis(dihydrogenphosphato-kappaO)copper(II)/zinc(II), formulated as [Zn(x)Cu(1-x)(H(2)PO(4))(2)(C(18)H(12)N(2))], with x = 0.88 (1) and 0.90 (2). The cation is tetrahedrally coordinated to a chelating biquinoline system and two diprotonated phosphate anions. The structures differ mainly in their intermolecular hydrogen-bonding interactions, leading to different packing schemes. No significant evidence of stress due to the Zn/Cu solid solution formation was detected.
authors.affiliation: Departamento de Química Analítica e Inorgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Casilla 233, Concepción, Chile. ymoreno@udec.cl
authors.forename: Yanko
authors.initials: Y
authors.lastname: Moreno
authors.forename: Patricio
authors.initials: P
authors.lastname: Hermosilla
authors.forename: María Teresa
authors.initials: MT
authors.lastname: Garland
authors.forename: Octavio
authors.initials: O
authors.lastname: Peña
authors.forename: Ricardo
authors.initials: R
authors.lastname: Baggio