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A chiral three-dimensional network in poly[μ-4,4'-bipyridine-di-μ-formato-cadmium(II)].

ABSTRACT: In the title compound, [Cd(HCOO)(2)(C(10)H(8)N(2))](n), the Cd(II) ion, located on a position with 2.22 site symmetry, is surrounded by two 4,4'-bipyridine ligands and four formate ligands in a distorted octahedral CdN(2)O(4) coordination. The 4,4'-bipyridine ligands bridge the metal ions, forming one-dimensional chains along different directions, which are further connected by formate ligands into a topologically (10(10).12(4).14)(10)(3) three-dimensional network.

SUBMITTER: Zhao L

PROVIDER: S-EPMC2968935 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Poly[bis-(4,4'-bipyridine)(μ(3)-4,4'-dicarboxybiphenyl-3,3'-di-carboxyl-ato)iron(II)].

Project description:In the polymeric title complex, [Fe(C(16)H(8)O(8))(C(10)H(8)N(2))(2)](n), the iron(II) cation is coordinated by four O atoms from three different 4,4'-dicarboxybiphenyl-3,3'-di-carboxyl-ate ligands and two N atoms from two 4,4'-bipyridine ligands in a distorted octa-hedral geometry. The 4,4'-dicarboxybiphenyl-3,3'-di-carboxyl-ate ligands bridge adjacent cations, forming chains parallel to the c axis. The chains are further connected by inter-molecular O-H⋯N hydrogen bonds, forming two-dimensional supra-molecular layers parallel to (010).

| S-EPMC2971993 | biostudies-literature

catena-Poly[[(4,4'-dimethyl-2,2'-bipyridine-?(2) N,N')cadmium]-di-?-bromido].

Project description:In the crystal of the title polymeric compound, [CdBr2(C12H12N2)] n , the Cd(II) cation is located on a twofold rotation axis and is six-coordinated in a distorted octa-hedral geometry formed by two N atoms from the 4,4'-dimethyl-2,2'-bipyridine ligand and by four bridging Br(-) anions. The bridging function of the Br(-) anions leads to a polymeric chain running along the c axis. Weak C-H?? inter-actions observed between adjacent chains are effective in the stabilization of the three-dimensional packing.

| S-EPMC3588747 | biostudies-literature

Poly[(μ-4,4'-bipyridine)(μ-naphthalene-1,4-dicarboxyl-ato)manganese(II)].

Project description:In the crystal structure of the title compound, [Mn(C(12)H(6)O(4))(C(10)H(8)N(2))](n), the Mn atoms are each coordinated by four O atoms of naphthalene-1,4-dicarboxyl-ate anions and two N atoms of two symmetry-related 4,4'-bipyridine ligands within a strongly distorted octa-hedra. Two of the O atoms originate from one naphthalene-1,4-dicarboxyl-ate anion, whereas the remaining two O atoms derive from two symmetry-equivalent naphthalene-1,4-dicarboxyl-ate anions. Two Mn atoms are connected via the anions into dimers, which are further linked by the anions and the N-donor ligands into a three-dimensional coordination network.

| S-EPMC2968939 | biostudies-literature

The one-dimensional polymer poly[[aqua-(2,2'-bipyridine)cadmium(II)]-?-trans-stilbene-4,4'-dicarboxyl-ato].

Project description:In the title polymer, [Cd(C(16)H(10)O(4))(C(10)H(8)N(2))(H(2)O)](n), the Cd(II) ion is in a strongly distorted octa-hedral geometry, being coordinated by two N atoms from a 2,2'-bipyridine ligand, three carboxylate O atoms from two symmetry-related trans-stilbene-4,4'-dicarboxyl-ate dianions and one water mol-ecule. The stilbene ligand lies on an inversion centre at the midpoint of the central C=C bond. This feature generates the polymeric structure: adjacent Cd(II) ions are bridged by trans-stilbene-4,4'-dicarboxyl-ate dianions, giving rise to a one-dimensional structure. The coordinated water mol-ecule is involved in interchain O-H?O hydrogen bonds.

| S-EPMC2915100 | biostudies-literature

Poly[(μ(2)-4,4'-bipyridine)bis-(μ(4)-5-tert-butyl-isophthalato)bis-(μ(3)-5-tert-butyl-isophthalato)di-μ(3)-hydroxido-penta-zinc(II)].

Project description:The asymmetric unit of the title compound, [Zn(5)(C(12)H(12)O(4))(4)(OH)(2)(C(10)H(8)N(2))](n), consists of three Zn(II) ions (one of which is located on a twofold rotation axis), two 5-tert-butyl-isophthalate ligands, one 4,4'-bipyridine ligand and one hydroxide group. The five Zn(II) ions form a penta-nuclear zinc cluster, which is further bridged by ten organic ligands, forming two-dimensional sheets. The central zinc ion of the cluster has site symmetry 2 and is octahedrally coordinated in a N(2)O(4) donor set, whereas the other four zinc atoms are tetrahedrally coordinated by four O atoms. The coordination modes for the 5-tert-butyl-isophthalates are bis-(bidentate) or bidentate-monodentate. Hydrogen bonds are formed between adjacent sheets through the hydroxide groups and the O atoms of the monodentate carboxyl-ate groups. The two tert-butyl groups are disordered over two positions with ratios of 0.64 (2):0.36 (2) and 0.85 (3):0.15 (3).

| S-EPMC2969937 | biostudies-literature

catena-Poly[manganese(II)-(μ(2)-3,5-di-2-pyridyl-1,2,4-triazol-ato)-μ(2)-formato].

Project description:Owing to the presence of crystallographic twofold rotation axes (site symmetry 2, Wyckoff letters e and f), the asymmetric unit of the title compound, [Mn(C(12)H(8)N(5))(CHO(2))](n), contains one-half of an Mn(II) cation, one-half of a bpt anion (Hbpt is 3,5-di-2-pyridyl-4H-1,2,4-triazole) and one-half of a formate anion. The bpt and formate ligands occupy the same C(2) symmetry, while the Mn(II) ion resides on another crystallographic twofold rotation axis. Each bpt ligand acts as a cis-bis-chelate to ligate two Mn(II) ions into a one-dimensional chain running along the crystallographic 4(1) screw axis. Adjacent Mn(II) ions are further bridged by a μ(2)-formate ligand, completing the distorted octa-hedral coordination geometry of the cation.

| S-EPMC2961983 | biostudies-literature

catena-Poly[[[tetra-aqua-cadmium(II)]-?-4,4'-bipyridine] fumarate tetra-hydrate].

Project description:In the crystal structure of the title compound, [Cd(C(10)H(8)N(2))(H(2)O)(4)](C(4)H(2)O(4))·4H(2)O, the Cd(II) atom, on an inversion centre, is six-coordinated by four O atoms from four water mol-ecules and two N atoms from 4,4'-bpy mol-ecules in a distorted octa-hedral coordination geometry. Weak C-H?O inter-actions between uncoordinated carboxyl-ate O atoms of fumaric acid and water mol-ecules contribute to the crystal packing stability.

| S-EPMC2915124 | biostudies-literature

catena-Poly[[(2,2'-bipyrimidine-κN,N)diperchloratocopper(II)]-μ-4,4'-bipyridine-κN:N'].

Project description:The central CuN(4)O(2) motif of the title compound, [Cu(ClO(4))(2)(C(8)H(6)N(4))(C(10)H(8)N(2))](n), exhibits a Jahn-Teller-distorted octa-hedral geometry around the metal centre, showing a considerably long Cu-O bond distance of 2.634 (4) Å towards the second perchlorate group occupying the sixth coordination site, giving a (4+1+1)-type coordination mode. The 4,4'-bipyridine (bipy) ligands are highly twisted with respect to each other, the dihedral angle between the two pyridyl ring planes being 38.9 (2)°. The bipy ligands act as bridging ligands between [Cu(ClO(4))(2)(2,2'-bpym)] (2,2'-bpym is 2,2'-bipyrimidine) units, generating an infinite one-dimensional zigzag chain along [010]. Intra- and intermolecular C-H⋯O hydrogen bonds are present in the crystal structure.

| S-EPMC2961952 | biostudies-literature

catena-Poly[{μ-cyanido-bis-[(4,4'-dimethyl-2,2'-bipyridine-κN,N')copper(I)]}-μ-cyanido-copper(I)-μ-cyanido].

Project description:In the title compound, [Cu(3)(CN)(3)(C(12)H(12)N(2))(2)], two 2,2'-bipyridine N,N'-chelated Cu(I) atoms are linked by a cyanide bridge that lies about a center of inversion; the Cu(I) atom exists in a tetra-hedral coordination geometry. This dinuclear entity is linked to another Cu(I) atom that lies on a twofold rotation axis by another cyanide bridge, these bridges giving rise to the formation of a linear chain motif.

| S-EPMC2961986 | biostudies-literature

Poly[[diaqua-nickel(II)]-μ(2)-4,4'-bipyridine-κN:N'-μ-p-phenyl-enedioxy-diacetato-κO:O'].

Project description:The title coordination polymer, [Ni(C(10)H(8)O(6))(C(10)H(8)N(2))(H(2)O)(2)](n), was obtained by the hydro-thermal reaction of nickel(II) sulfate, benzene-1,4-dioxy-diacetic acid (p-phenyl-enedioxy-diacetic acid) and 4,4'-bipyridine (4,4'-bpy) in alkaline aqueous solution. Each Ni(II) atom is coordinated by two O atoms from two benzene-1,4-dioxy-diacetate ligands, two N atoms from two 4,4'-bpy ligands and two water mol-ecules, and displays a distorted octa-hedral geometry. The Ni(II) atom and benzene-1,4-dioxy-diacetate and 4,4'-bpy moieties lie on inversion centres. The benzene-1,4-dioxy-diacetate ligands bridge the Ni(II) atoms to form infinite zigzag chains, which are further inter-connected by 4,4'-bpy ligands to form a grid-like layer parallel to the (01) plane. Moreover, there are O-H⋯O hydrogen-bonding inter-actions within the grid-like layer between the coordinated water mol-ecules and the carboxyl-ate O atoms.

| S-EPMC2914940 | biostudies-literature

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