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Poly[[tetra-aqua-bis[μ(3)-1-ethyl-6-fluoro-4-oxo-7-(piperazinium-1-yl)-1H-quinoline-3-carboxyl-ato]dinickel(II)] hydroxide nitrate].

ABSTRACT: In the title compound, [Ni(2)(C(16)H(18)FN(3)O(3))(2)(H(2)O)(4)](OH)(NO(3)), the cationic [Ni(2)(C(16)H(18)FN(3)O(3))(2)(H(2)O)(4)](2+) building units are linked through Ni-O(carboxyl-ate) and Ni-N(amino) bridges into a layer structure. The two independent nickel atoms lie on inversion centres: one adopts an NiO(6) octa-hedral geometry, the other a trans-NiN(2)O(4) octahedral arrangement. The charge-balancing hydroxide and nitrate ions are of half site occupancy each. A network of O-H⋯O and N-H⋯O hydrogen bonds helps to establish the packing.

SUBMITTER: Song WD

PROVIDER: S-EPMC2914950 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Tetra-aqua-hexa-kis(μ(2)-quinoline-4-carboxyl-ato)diyttrium(III) dihydrate.

Project description:In the title centrosymmetric binuclear complex, [Y(2)(C(10)H(6)NO(2))(6)(H(2)O)(4)]·2H(2)O, each Y(III) atom is nine-coordin-ated by nine O atoms from five ligands and two water mol-ecules in a slightly distorted monocapped square-anti-prismatic coordination environment. The Y(III) atoms are separated by a distance of 4.0363 (9) Å. The ligands coordinate in three different modes: chelating, bridging and a mixed chelating bridging mode. In the crystal structure, the binuclear complexes are linked by O-H⋯O and O-H⋯N hydrogen bonds, forming a three-dimensional network.

| S-EPMC2960038 | biostudies-literature

Tetra-aqua-bis(2-oxo-1,2-dihydro-quinoline-4-carboxyl-ato-κO)nickel(II).

Project description:In the title compound, [Ni(C(10)H(6)NO(3))(2)(H(2)O)(4)], the central Ni(II) atom is located on an inversion center and coordinated in a slightly distorted octa-hedral geometry by two O atoms from two 2-oxo-1,2-dihydro-quinoline-4-carboxyl-ate ligands and four water mol-ecules, all of which act as monodentate ligands. The crystal structure features an extensive network of inter-molecular hydrogen-bonding inter-actions (O-H⋯O and N-H⋯O) and offset face-to-face π-π stacking inter-actions [centroid-centroid distances = 3.525 (3) and 3.281 (5) Å].

| S-EPMC2960272 | biostudies-literature

Aqua-bis[1-ethyl-6-fluoro-7-(4-methyl-piperazin-1-yl)-4-oxo-1,4-dihydro-quinoline-3-carboxyl-ato]zinc(II) dihydrate.

Project description:The title compound, [Zn(C(17)H(19)FN(3)O(3))(2)(H(2)O)]·2H(2)O or [Zn(pef)(2)(H(2)O)]·2H(2)O, where pef is 1-ethyl-6-fluoro-7-(4-methyl-piperazin-4-yl)-4-oxo-1,4-dihydro-quinoline-3-carb-oxyl-ate, was synthesized under hydro-thermal conditions. The Zn(II) atom exhibits a distorted ZnO(5) square-pyramidal geometry defined by two bidentate O,O-bonded pef anions in the basal plane and one water mol-ecule in the apical position. A network of O-H⋯O and O-H⋯N hydrogen bonds is formed between the Zn(II) complexes and the uncoordinated water mol-ecules.

| S-EPMC2960459 | biostudies-literature

Poly[[[(1-ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydro-quinoline-3-carboxyl-ato)manganese(II)]-μ(3)-4,4'-oxydibenzoato] monohydrate].

Project description:In the title compound, {[Mn(C(16)H(18)N(3)O(3))(C(14)H(8)O(5))]·H(2)O}(n), the unique Mn(II) ion is coordinated by two O atoms from a chelating 1-ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydro-quinoline-3-carboxyl-ate ligand and three O atoms from three 4,4'-oxydibenzoate ligands, forming a distorted square-pyramidal coordination environment. In the crystal structure, centrosymmetric dinuclear manganese units are linked via 4,4'-oxydibenzoate ligands into one-dimensional chains; these chains are, in turn, connected via inter-molecular N-H⋯O and O-H⋯O hydrogen bonds to form a two-dimensional supra-molecular network. The O atom of the solvent water mol-ecule is disordered over two sites with equal occupancies; the attached H atoms are common to both sites.

| S-EPMC2914913 | biostudies-literature

catena-Poly[[[(1-ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydro-quinoline-3-carboxyl-ato-?O,O)copper(II)]-?-1-ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydro-quinoline-3-carboxyl-ato-?N:O,O] tetra-hydrate].

Project description:In the title compound, {[Cu(C(16)H(17)FN(3)O(3))(2)]·4H(2)O}(n), the Cu(II) atom is bonded to two O,O'-bidentate 1-ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydro-quinoline-3-carboxyl-ate (norf) monoanions and a symmetry-generated N-bonded norf anion, resulting in a distorted square-pyramidal coordination environ-ment with the N atom occupying the apical site. The bridging norf anion results in one-dimensional chains propogating along [010]. A network of O-H?O and N-H?O hydrogen bonds helps to establish the crystal structure.

| S-EPMC2960715 | biostudies-literature

Poly[(aqua-calcium)-μ(4)-pyrazine-2,3-di-carboxyl-ato].

Project description:The polymeric title compound, [Ca(C(6)H(2)N(2)O(4))(H(2)O)](n), was synthesized from pyrazine-2,3-dicarb-oxy-lic acid and calcium dichloride under hydro-thermal conditions. The Ca(2+) cation is seven-coordinated by five O atoms and one N atom of four pyrazine-2,3-dicarboxyl-ate anions, and one water mol-ecule. The complete deprotonated pyrazine-2,3-dicarboxyl-ate anion adopts a μ(4)-coordination mode, resulting in the formation of a three-dimensional structure.

| S-EPMC3238750 | biostudies-literature

(μ-Ethane-1,1,2,2-tetra-carboxyl-ato)bis-[tetra-aqua-manganese(II)].

Project description:In the centrosymmetric title molecule, [Mn(2)(C(6)H(2)O(8))(H(2)O)(8)], the Mn(II) atom is in an octa-hedral environment coordinated by six O-atom donors from water mol-ecules and ethane-1,1,2,2-tetra-carboxyl-ate ligands. The crystal structure features a three-dimensional hydrogen-bonding network based on a strong and distinctive pattern of O-H⋯O hydrogen-bonding inter-actions.

| S-EPMC3099957 | biostudies-literature

Poly[[hepta-μ(2)-aqua-bis-(μ(2)-pyrazine-2-carboxyl-ato)dibarium] bis-(pyrazine-2-carboxyl-ate)].

Project description:In the layered title coordination polymer, {[Ba(2)(C(5)H(3)N(2)O(2))(2)(H(2)O)(7)](C(5)H(3)N(2)O(2))(2)}(n), the coordination geometries around the two independent Ba(II) ions can be described as bicapped square-anti-prismatic [BaNO(9)] arrangements. A two-dimensional polymeric framework with (6,3) topology can be observed in the ac plane, the nodes being provided by Ba(II) ions and the connectors being N and O atoms belonging to pyrazine-2-carboxyl-ate ligands and O atoms of bridging water mol-ecules. Non-coordinating pyrazine-2-carboxyl-ate ions are located between the polymeric layers in the crystal and are interconnected through extensive O-H⋯N,O hydrogen bonding.

| S-EPMC3051667 | biostudies-literature

Poly[aqua-(μ(3)-pyridazine-4-carboxyl-ato-κO:O:O')lithium].

Project description:The structure of the title compound, [Li(C(5)H(3)N(2)O(2))(H(2)O)](n), is composed of centrosymmetric dimers in which two Li(I) ions are bridged by a carboxyl-ate O atom, each donated by a ligand, acting in a bidentate mode. The second carboxyl-ato O atoms bridge the dimers to Li(I) ions in adjacent dimers, forming mol-ecular layers parallel to (001). Each Li(I) ion is coordinated by two bridging carboxyl-ate O atoms, a bridging carboxyl-ate O atom donated by the adjacent dimer and an aqua O atom, resulting in a distorted tetra-hedral coordination geometry. The layers are held together by O-H⋯N hydrogen bonds in which coordinated water O atoms act as donors and ligand hetero-ring N atoms as acceptors.

| S-EPMC3099971 | biostudies-literature

Bis(μ-pyridazine-3-carboxyl-ato-κO:O')bis-[aqua-dioxido(pyridazine-3-carboxyl-ato-κN,O)uranium(VI)] dihydrate.

Project description:The structure of the binuclear title complex, [U(2)(C(5)H(3)N(2)O(2))(4)O(4)(H(2)O)(2)]·2H(2)O, is composed of centrosymmetric dimers in which each UO(2) (2+) ion is coordinated by two ligand mol-ecules. One donates its N,O-bonding group and the other donates both carboxyl-ate O atoms. Each of the latter bridges adjacent uranyl ions. The coordination environment of the metal center is a distorted penta-gonal bipyramid. The dimers are inter-connected by O-H⋯O hydrogen bonds between coordinated and uncoordinated water mol-ecules and carboxyl-ate O atoms. An intra-molecular O-H⋯N inter-action is also present.

| S-EPMC2967926 | biostudies-literature

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