title: Crystal structure ofcatena-poly[bis-(tetra-ethyl-ammonium) [tetra-aqua-tris(μ-dicyanamido-κ2N1:N5)bis(dicyanamido-κN1)di-cobaltate(II)] dicyanamide].
abstract: The structure of the title compound, [N(C2H5)4]2[Co2(C2N3)5(H2O)4](C2N3), is a new example of a metal-dicyanamide coordination polymer which exhibits a unique three-dimensional framework of covalently linked CoIIchains. All bridging dicyanamide ligands in the title structure are in theμ1,5-bridging mode. The anionic CoII-dicyanamide network is templated by tetra-ethyl-ammonium cations residing in a series of channels extending along thebaxis where additional non-coordinating dicyanamidate anions are also located. The framework structure is further stabilized by O-H⋯N hydrogen bonding between aqua ligands and dicyanamido ligands or the dicyanamide anion. In addition, C-H⋯N inter-actions are present between the tetra-ethyl-ammonium cations and dicyanamide amide nitro-gen atoms.
authors.affiliation: Department of Chemistry and Environmental Science, Grenfell Campus, Memorial University of Newfoundland, Corner Brook, NL, A2H 5G4, Canada.
authors.forename: Chen
authors.initials: C
authors.lastname: Liu
authors.affiliation: Department of Chemistry, University of Florida, Gainesville, FL, 32611-7200, USA.
authors.forename: Annaliese E
authors.initials: AE
authors.lastname: Thuijs
authors.affiliation: Department of Chemistry, University of Florida, Gainesville, FL, 32611-7200, USA.
authors.forename: Khalil A
authors.initials: KA
authors.lastname: Abboud
keywords: O—H⋯N hydrogen bonding; cation template; crystal structure; metal dicyanamide coordination polymer; tetra­ethyl­ammonium