title: Crystal structure ofmeso-di-μ-chlorido-bis-[bis-(2,2'-bi-pyridine)-cadmium] bis-(1,1,3,3-tetra-cyano-2-ethoxy-propenide) 0.81-hydrate.
abstract: The hydrated title salt, [Cd2Cl2(C10H8N2)4](C9H5N4O)2·0.81H2O, was obtained from the hydro-thermal reaction between 2,2'-bi-pyridine, cadmium(II) chloride and potassium 1,1,3,3-tetra-cyano-2-eth-oxy-propenide. The binuclear cation lies across a centre of inversion in the space groupP21/c, with the other components in general positions. The cation has approximate, but non-crystallographic 2/msymmetry and each of the CdIIatoms is a stereogenic centre, one having the Δ configuration and the other the Λ configuration. In the anion, one of the C(CN)2units is disordered over two sets of atomic sites having occupancies 0.75 (2) and 0.25 (2). The cations are linked by two independent C-H⋯Cl hydrogen bonds to form a sheet ofR22(14) andR42(24) rings.
authors.affiliation: Laboratoire de Chimie, Ingénierie Moléculaire et Nanostructures (LCIMN), Université Ferhat Abbas Sétif 1, Sétif 19000, Algeria.
authors.forename: Fatima
authors.initials: F
authors.lastname: Setifi
authors.affiliation: Fachrichtung Chemie, Universität des Saarlandes, Postfach 151150, D-66041 Saarbrücken, Germany.
authors.forename: Bernd
authors.initials: B
authors.lastname: Morgenstern
authors.affiliation: Fachrichtung Chemie, Universität des Saarlandes, Postfach 151150, D-66041 Saarbrücken, Germany.
authors.forename: Kaspar
authors.initials: K
authors.lastname: Hegetschweiler
authors.affiliation: Laboratoire de Chimie, Ingénierie Moléculaire et Nanostructures (LCIMN), Université Ferhat Abbas Sétif 1, Sétif 19000, Algeria.
authors.forename: Zouaoui
authors.initials: Z
authors.lastname: Setifi
authors.affiliation: Laboratoire de Chimie Appliquée et Environnement, LCAE-URAC18, COSTE, Faculté des Sciences, Université Mohamed Premier, BP 524, 60000, Oujda, Morocco; Faculté Pluridisciplinaire Nador BP 300, Selouane, 62702, Nador, Morocco.
authors.forename: Rachid
authors.initials: R
authors.lastname: Touzani
authors.affiliation: School of Chemistry, University of St Andrews, St Andrews, Fife KY16 9ST, UK.
authors.forename: Christopher
authors.initials: C
authors.lastname: Glidewell
keywords: crystal structure; hydrogen bonding; hydro­thermal synthesis; mol­ecular disorder; mol­ecular structure; polynitrile anions