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Catena-Poly[zinc(II)-?-aqua-?O:O-bis-(?-quinoline-4-carboxyl-ato-?O:O')].

ABSTRACT: The asymmetric unit of the title complex, [Zn(C(10)H(6)NO(2))(2)(H(2)O)](n), consists of one quinoline-4-carboxyl-ate anion, half of a Zn(2+) cation and half of a coordinated water mol-ecule. The cation and the water O atom have crystallographically imposed inversion and twofold rotation symmetry, respectively. The metal centre displays an elongated ZnO(6) octa-hedral coordination geometry provided by the O atoms of four anions at the equatorial plane and two axial water mol-ecules. Each anion and water mol-ecule act as bridges between Zn(II) cations, forming a polymeric chain parallel to [001]. The chains are further linked into a three-dimensional framework through O-H?N hydrogen bonds.

SUBMITTER: Chen JX

PROVIDER: S-EPMC2977275 | biostudies-literature | 2009

REPOSITORIES: biostudies-literature

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catena-Poly[zinc(II)-μ-aqua-κO:O-bis-(μ-quinoline-4-carboxyl-ato-κO:O')].

Chen Jin-Xi JX Meng Wei-Wei WW

Acta crystallographica. Section E, Structure reports online 20090704 Pt 8

The asymmetric unit of the title complex, [Zn(C(10)H(6)NO(2))(2)(H(2)O)](n), consists of one quinoline-4-carboxyl-ate anion, half of a Zn(2+) cation and half of a coordinated water mol-ecule. The cation and the water O atom have crystallographically imposed inversion and twofold rotation symmetry, respectively. The metal centre displays an elongated ZnO(6) octa-hedral coordination geometry provided by the O atoms of four anions at the equatorial plane and two axial water mol-ecules. Each anion a ...[more]

PMID: 21583338

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catena-Poly[[diaqua-calcium(II)]-bis-(?-quinoline-3-carboxyl-ato)].

Project description:In the title complex, [Ca(C(10)H(6)NO(2))(2)(H(2)O)(2)](n), the Ca(II) ion is eight-coordinated by six carboxyl-ate O atoms from four separate quinoline-3-carboxyl-ate ligands, two of which are bidentate chelate and two bridging, and two water mol-ecules in a distorted square-anti-prismatic geometry. The bridging groups form a polymeric chain substructure extending along the c axis, the chains being connected by coordinated-water O-H?N and O-H?O(carboxyl-ate) hydrogen bonds into a three-dimensional framework structure.

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catena-Poly[[diaqua-strontium]-bis-(?-quinoline-3-carboxyl-ato)].

Project description:The title compound, [Sr(C(10)H(6)NO(2))(2)(H(2)O)(2)](n), contains an eight-coordinate Sr(II) ion displaying a distorted square-anti-prismatic geometry, two quinoline-3-carboxyl-ate ligands and two terminal water mol-ecules. The Sr(II) atom is surrounded by six carboxyl-ate O atoms from four separate quinoline-3-carboxyl-ate ligands and two O atoms from two coordinated water mol-ecules. The bridging carboxyl-ate O atoms [Sr-O = 2.498?(3) and 2.495?(3)?Å] link Sr(II) atoms, forming a chain substructure extending along the c axis. The chains are linked by O-H?N and O-H?O hydrogen bonds, giving a three-dimensional framework structure.

| S-EPMC3201418 | biostudies-literature

catena-Poly[cobalt(II)-bis-(?-3,7-dichloro-quinoline-8-carboxyl-ato-?N,O:O')].

Project description:In the crystal structure of the title compound, [Co(C(10)H(4)Cl(2)NO(2))(2)](n), the Co(II) cation lies on a twofold rotation axis. Each cation is N,O-chelated by the carboxyl-ate anions of two 3,7-dichloro-quinoline-8-carboxyl-ate ligands. The second carboxyl-ate O atom of each ligand coordinates to the Co(II) cation of an adjacent mol-ecule, linking the cations into a linear chain. Strong inter-chain ?-? stacking inter-actions are observed in the crystal structure (perpendicular distance 3.42?Å, centroid-to-centroid distance 3.874?Å).

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catena-Poly[[tetra-aqua-?-aqua-bis-(?(4)-pyrimidine-2-carboxyl-ato)tetra-lithium] dichloride].

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catena-Poly[bis-(4-amino-pyridinium) [[tetra-aqua-nickel(II)]-?-benzene-1,2,4,5-tetra-carboxyl-ato] dihydrate].

Project description:The asymmetric unit of the title compound, {(C(5)H(7)N(2))(2)[Ni(C(10)H(2)O(8))(H(2)O)(4)]·2H(2)O}(n), contains an Ni(II) atom, two water mol-ecules of coordination, one half of a benzene-1,2,4,5-tetra-carboxyl-ate (btec) anionic ligand, one 4-amino-pyridinium cation (papy) and an uncoordinated water mol-ecule. The metal center lies on an inversion center and adopts an octa-hedral geometry with the carboxyl-ate groups tilted out of the mean plane formed by the btec. In the crystal, mol-ecules are linked into one-dimensional coordination polymers running along the ac diagonal. The crystal structure is consolidated by N-H?O and O-H?O hydrogen bonds.

| S-EPMC2970276 | biostudies-literature

catena-Poly[[[?-aqua-penta-aqua-dizinc(II)]-?(4)-benzene-1,2,4,5-tetra-carboxyl-ato] dihydrate].

Project description:The asymmetric unit of the title compound, {[Zn(2)(C(10)H(2)O(8))(H(2)O)(6)]·2H(2)O}(n), contains two distinct Zn atoms joined by a bridging water molecule and two bridging carboxyl-ate groups belonging to distinct halves of benzene-1,2,4,5-tetra-carboxyl-ate (tbec) tetra-anionic ligands, both lying on crystallographic inversion centres. The structure of this new isopolymorphic one-dimensional coordination polymer features asymmetric bimetallic octa-hedral knots. O-H?O hydrogen bonds between water molecules and carboxylate O atoms help to consolidate the crystal packing.

| S-EPMC2977204 | biostudies-literature

catena-Poly[aqua-bis-(?-3-chloro-benzo-ato-?(2) O:O')zinc].

Project description:In the polymeric title compound, [Zn(C7H4ClO2)2(H2O)] n , the Zn(II) cation is located on a twofold rotation axis and is coordinated by carboxylate O atoms of four monodentate chloro-benzoate anions and by one water mol-ecule, located on a twofold rotation axis, in a distorted square-pyramidal geometry. In the anion, the carboxyl-ate group is twisted away from the attached benzene ring by 44.16?(11)°. The chloro-benzoate anion bridges Zn(II) cations, forming polymeric chains running along the c-axis direction. O-H?O hydrogen bonds between coordinating water mol-ecules and carboxyl-ate groups link adjacent chains into layers parallel to the bc plane.

| S-EPMC3772418 | biostudies-literature

Diaqua-bis(3,7-dichloro-quinoline-8-carboxyl-ato)zinc(II) monohydrate.

Project description:In the title compound, [Zn(C(10)H(4)Cl(2)NO(2))(2)(H(2)O)(2)]·H(2)O, the Zn atom has a distorted square-pyramidal geometry comprising two O atoms and one N atom from two distinct 3,7-dichloro-quinoline-8-carboxyl-ate ligands, and two water mol-ecules. The free water mol-ecules are involved in inter-molecular O-H?O hydrogen bonding with the coordinated water mol-ecules and carboxyl-ate O atoms, to give a one-dimensional helical chain along the [100] direction.

| S-EPMC2960553 | biostudies-literature

Aqua-bis(1H-benzimidazole-2-carboxyl-ato-?O,N)zinc(II).

Project description:In the title compound, [Zn(C(8)H(5)N(2)O(2))(2)(H(2)O)], the Zn(II) ion is coordinated in each case by a carboxyl-ate O atom and an imidazole N atom from two different benzimidazole-2-carboxyl-ate (BIC) ligands and one water O atom in a trigonal-bipyramidal geometry. In the complex mol-ecule, the two benzimidazole planes are twisted, making a dihedral angle of 55.93?(11)°. The three-dimensional framework is organized by inter-molecular N-H?O hydrogen bonding and O-H?O inter-actions and ?-? inter-actions between adjacent benzimidazole rings [centroid-centroid distance = 3.586?(3)?Å].

| S-EPMC2979547 | biostudies-literature

catena-Poly[[aqua-(1,10-phenanthroline)cadmium(II)]-μ-benzene-1,4-di-carboxyl-ato].

Project description:The title compound, [Cd(C(8)H(4)O(4))(C(12)H(8)N(2))(H(2)O)](n), is a new coordination polymer of benzene-1,4-dicarboxyl-ate with cadmium(II) and 1,10-phenanthroline. The Cd(II) ion is coordinated by two N atoms from the 1,10-phenanthroline mol-ecule, three O atoms from two crystallographically independent benzene-1,4-dicarboxyl-ate ligands and the O atom of a coordinated water mol-ecule, forming a heavily distorted octa-hedron. The 1,10-phenanthroline ligand is approximately planar within 0.073 (4) Å. The two different benzene-1,4-dicarboxyl-ate ligands each coordinate to two Cd(II) ions in bidentate and monodentate modes, forming an infinite zigzag chain. Adjacent chains are packed tightly by strong π-π inter-actions [centroid-centroid distances = 3.851 (2) and 3.859 (2) Å] between the aromatic rings of the benzene-1,4-dicarboxyl-ate ligand and the 1,10-phenanthroline of a neighboring chain, forming a sheet parallel to (011). Different sheets are linked together via O-H⋯O hydrogen bonds between the coordinated water mol-ecules and the O atoms of the carboxyl-ate groups, forming a three-dimensional network.

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