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Diaqua-bis(cyclo-hexa-necarboxyl-ato)zinc(II) monohydrate.

ABSTRACT: In the title compound, [Zn(C(7)H(11)O(2))(2)(H(2)O)(2)]·H(2)O, the Zn(II) atom (site symmetry ) is four-coordinated by two O atoms from the cyclo-hexa-necarboxyl-ate anions and two O atoms from the water mol-ecules, forming a slightly distorted square-planar coordination. The O atom of the uncoordinated water mol-ecule lies on a crysatllographic twofold rotation axis. In the crystal, the components are linked by O-H⋯O hydrogen bonds, forming a three-dimensional network.

SUBMITTER: Zhang YW

PROVIDER: S-EPMC2969973 | biostudies-literature |

REPOSITORIES: biostudies-literature

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(Cyclo-hexa-necarboxyl-ato)bis-(di-2-pyridylamine)zinc(II) nitrate monohydrate.

Project description:In the title compound, [Zn(C(7)H(11)O(2))(C(10)H(9)N(3))(2)]NO(3)·H(2)O, the Zn(II) atom is five-coordinated by two bidentate di-2-pyridylamine ligands and one O atom from a cyclo-hexa-necarboxy-ate anion, resulting in a ZnON(4) square-based pyramidal coordination for the metal ion with the O atom in one of the basal positions. In the crystal, the components inter-act by way of O-H?O, O-H?N and N-H?O hydrogen bonds.

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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

Diacridinium trans-diaqua-bis(pyrazine-2,3-dicarboxyl-ato)cobaltate(II) hexa-hydrate.

Project description:The title compound, (C(13)H(10)N)(2)[Co(C(6)H(2)N(2)O(4))(2)(H(2)O)(2)]·6H(2)O, consists of mononuclear trans-[Co(pz-2,3-dc)(2)(H(2)O)(2)](2-) complex anions, (acrH)(+) cations and uncoordinated water mol-ecules (acr is acridine and pz-2,3-dcH(2) is pyrazine-2,3-dicarboxylic acid). The Co(II) atom, which lies on a crystallographic center of symmetry, has a slightly distorted octa-hedral coordination environment, with two N and two O atoms from the (pz-2,3-dc)(2-) ligands in the equatorial plane and with two water mol-ecules in axial positions. In the crystal, the components are held together by two distinct N-H?O and C-H?O hydrogen bonds with R(2) (2)(8) graph-sets. The coordinated and uncoordinated water mol-ecules are also involved in O-H?O hydrogen bonds, which lead to the formation of layers with R(3) (3)(12) graph-set motifs. Extensive ?-? stacking inter-actions between parallel aromatic rings of the acridinium ions, with distances ranging from 3.533?(1) to 3.613?(1)?Å, occur in the structure.

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Poly[[diaqua-(ethanol)bis-(?(3)-pyridine-2,3-dicarboxyl-ato)dimanganese(II)] monohydrate].

Project description:The title compound, {[Mn(2)(C(7)H(3)NO(4))(2)(C(2)H(5)OH)(H(2)O)(2)]·H(2)O}(n), is a three-dimensional polymer. There are two symmetry-independent Mn(II) centres with different coordination environments: one Mn(II) atom is coordinated by four O atoms from four ligands and two N atoms from two ligands, the other Mn(II) atom is coordinated by three O atoms from two ligands, two water O atoms and the O atom of an ethanol mol-ecule. The crystal structure is stabilized by O-H?O hydrogen bonds.

| S-EPMC2970155 | biostudies-literature

trans-Diaqua-bis-(cyclo-hexane-1,2-diamine)-zinc(II) dichloride.

Project description:In the title compound, [Zn(C(6)H(14)N(2))(2)(H(2)O)(2)]Cl(2), the Zn(II) atom resides on a special position with site symmetry 2/m and is octa-hedrally coordinated by four N atoms from two trans 1,2-diamino-cyclo-hexane ligands and two water O atoms. In the crystal, N-H⋯Cl and O-H⋯Cl hydrogen bonds link the mol-ecules into a two-dimensional network parallel to the bc plane.

| S-EPMC3099959 | biostudies-literature

Bis(?-2,2'-bi-1H-imidazole-1,1'-di-acet-ato)bis-[diaqua-cobalt(II)] hexa-hydrate.

Project description:The dinuclear title compound, [Co(2)(C(10)H(8)N(4)O(4))(2)(H(2)O)(4)]·6H(2)O, lies about an inversion centre. Each Co(II) atom is six-coordinated by two water mol-ecules, two carboxyl-ate O atoms and two N atoms of two symmetry-related 2,2'-bi-1H-imidazole-1,1'-diacetate (L(2-)) ligands in a slightly distorted octa-hedral geometry. Mol-ecules are linked into a three-dimensional framework via O-H?O and C-H?O hydrogen bonds.

| S-EPMC2977594 | biostudies-literature

Diaqua-bis(5-methyl-pyridine-2-carboxyl-ato-?N,O)zinc(II).

Project description:In the title compound, [Zn(C(7)H(6)NO(2))(2)(H(2)O)(2)], the Zn atom (site symmetry ) adopts a distorted trans-ZnN(2)O(4) octa-hedral coordination arising from two N,O-bidentate 5-methyl-pyridine-2-carboxyl-ate ligands and two water mol-ecules. In the crystal structure, mol-ecules form a layered network linked by O-H?O hydrogen bonds.

| S-EPMC2968010 | biostudies-literature

Bis(2-amino-4-methyl-pyridinium) trans-diaqua-bis-(pyrazine-2,3-dicarboxyl-ato)cuprate(II) hexa-hydrate.

Project description:The title compound, (C(6)H(9)N(2))(2)[Cu(C(6)H(2)N(2)O(4))(2)(H(2)O)(2)]·6H(2)O, consists of a mononuclear trans-[Cu(pzdc)(2)(H(2)O)(2)](2-) dianion (pzdc is pyrazine-2,3-dicarboxyl-ate) and two [ampyH](+) cations (ampy is 2-amino-4-methyl-pyridine) with six water mol-ecules of solvation. The Cu(II) atom is hexa-coordinated by two pzdc groups and two water mol-ecules. The coordinated water mol-ecules are in trans-diaxial positions and the pzdc dianion acts as a bidentate ligand through an O atom of the carboxyl-ate group and the N atom of the pyrazine ring. There are diverse hydrogen-bonding inter-actions, such as N-H?O and O-H?O contacts, which lead to the formation of a three-dimensional supra-molecular architecture.

| S-EPMC3007013 | biostudies-literature

Bis(2-amino-6-methyl-pyridinium) trans-diaqua-bis-(pyrazine-2,3-dicarboxyl-ato)cuprate(II) hexa-hydrate.

Project description:The title compound, (C(6)H(9)N(2))(2)[Cu(C(6)H(2)N(2)O(4))(2)(H(2)O)(2)]·6H(2)O, was obtained by the reaction of CuCl(2)·2H(2)O with pyrazine-2,3-dicarb-oxy-lic acid (pyzdcH(2)) and 2-amino-6-methyl-pyridine (2a-6mpy) in aqueous solution. The Cu(II) atom is located on an inversion centre and has an overall octa-hedral coordination environment. Two N and two O atoms from (pyzdc)(2-) ligands define the equatorial plane and two water mol-ecules are in axial positions, resulting in a typical tetra-gonally Jahn-Teller-distorted environment. Extensive classical O-H?O, O-H?N and N-H?O and non-classical C-H?O hydrogen bonds, as well as ?-? stacking inter-actions between aromatic rings of the cations [centroid-centroid distance = 3.58?(9)?Å], lead to the formation of a three-dimensional supra-molecular structure.

| S-EPMC3100057 | biostudies-literature

(1S,3R)-3-Ammonio-cyclo-hexa-necarboxyl-ate.

Project description:The title ?-amino-butyric acid, C(7)H(13)NO(2), exists as a zwitterion. The crystal structure is stabilized by a network of inter-molecular N-H?O hydrogen bonds, forming a two-dimensional bilayer. An inter-molecular C-H?O hydrogen bond is also observed.

| S-EPMC2959423 | biostudies-literature

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