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Poly[(?(4)-pyridine-2,3-dicarboxyl-ato)lead(II)].

ABSTRACT: In the title coordination polymer, [Pb(C(7)H(3)NO(4))](n), the Pb(II) ion is eight-coordinated in a distorted square-anti-prismatic geometry formed by one pyridine N atom and seven carboxyl-ate O atoms from four pyridine-2,3-dicarboxyl-ate (pda) anions. In the pda anion, the dihedral angles between the pyridine ring and carboxyl-ate groups are 19.5?(6) and 73.3?(6)°. The carboxyl-ate groups of the pda anions bridge the Pb ions, forming a two-dimensional coordination polymer parallel to (100). Weak inter-molecular C-H?O hydrogen boning is present in the crystal structure.

SUBMITTER: Lush SF

PROVIDER: S-EPMC3051456 | biostudies-literature | 2011 Jan

REPOSITORIES: biostudies-literature

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Poly[(μ(4)-pyridine-2,3-dicarboxyl-ato)lead(II)].

Lush Shie Fu SF Shen Fwu Ming FM

Acta crystallographica. Section E, Structure reports online 20110115 Pt 2

In the title coordination polymer, [Pb(C(7)H(3)NO(4))](n), the Pb(II) ion is eight-coordinated in a distorted square-anti-prismatic geometry formed by one pyridine N atom and seven carboxyl-ate O atoms from four pyridine-2,3-dicarboxyl-ate (pda) anions. In the pda anion, the dihedral angles between the pyridine ring and carboxyl-ate groups are 19.5 (6) and 73.3 (6)°. The carboxyl-ate groups of the pda anions bridge the Pb ions, forming a two-dimensional coordination polymer parallel to (100). We ...[more]

PMID: 21522843

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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

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Project description:In the title compound, {[Cu(C(7)H(3)NO(4))(H(2)O)(3)]·H(2)O}(n), the Cu(II) ion is bonded to three water mol-ecules, one N,O-bidentate pyridine-2,3-dicarboxyl-ate dianion and one O-bonded symmetry-generated dianion, resulting in a distorted CuNO(5) octa-hedral geometry. The bridging ligand results in an infinite chain. A network of O-H?O hydrogen bonds helps to establish the crystal structure.

| S-EPMC2959291 | biostudies-literature

catena-Poly[[triaqua-cadmium(II)]-μ-pyridine-2,3-dicarboxyl-ato-κN,O:O].

Project description:The title polymeric compound, [Cd(C(7)H(3)NO(4))(H(2)O)(3)](n) or [Cd(py-2,3-dc)(H(2)O)(3)](n), where py-2,3-dcH(2) is pyridine-2,3-dicarboxylic acid, was obtained by the reaction of cadmium(II) nitrate hexa-hydrate with (pipzH(2))(py-2,3-dc) as a proton-transfer compound in aqueous solution (pipz is piperazine). The mol-ecular structure shows that only the anionic fragment of the starting proton-transfer compound is present in the complex, while the (pipzH(2))(2+) dication has been lost. Each (py-2,3-dc)(2-) ligand bridges two Cd(II) atoms in two different coordination modes, i.e. one end acts as a monodentate and the other end as a bidentate ligand. The three remaining coordination sites on the metal center are occupied by water mol-ecules. The geometric arrangement of the six donor atoms around the Cd(II) atom is distorted octa-hedral. In the crystal structure, O-H⋯O and C-H⋯O hydrogen bonds play an important role in stabilizing the supra-molecular structure.

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Poly[propane-1,3-diammonium [cuprate(II)-bis-(μ(2)-pyridine-2,3-dicarboxyl-ato)] trihydrate].

Project description:The title polymeric compound {(C(3)H(12)N(2))[Cu(C(7)H(3)NO(4))(2)]·3H(2)O}(n) or {(pnH(2))[Cu(py-2,3-dc)(2)]·3H(2)O}(n) (pn is propane-1,3-diamine and py-2,3-dcH(2) is pyridine-2,3-dicarboxylic acid), was synthesized by reaction of copper(II) chloride dihydrate with a proton-transfer compound, propane-1,3-diammonium pyridine-2,3-dicarboxyl-ate or (pnH(2))(py-2,3-dc), in aqueous solution. The anion is a six-coordinate complex (site symmetry ), with a distorted octa-hedral geometry around Cu(II), consisting of two bidentate pyridine-2,3-dicarboxyl-ate groups and two O atoms of bridging ligands from (py-2,3-dc)(2-) fragments, which are located in trans positions. The (pnH(2))(2+) cation is disordered over two sites by the center of inversion. Inter-molecular hydrogen bonds, π-π [centroid-centroid distances of 3.539 (3) Å] and C-O⋯π stacking inter-actions [O⋯Cg = 3.240 (5) Å; Cg is the center of the pyridine ring], connect the various components into a supra-molecular structure.

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Poly[di-?(2)-aqua-?(5)-(pyridine-2,6-dicarboxyl-ato)-?(3)-(pyridine-2,6-dicarboxyl-ato)-cobalt(II)disodium].

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Poly[(?-1H-benzimidazole-5,6-dicarboxyl-ato)lead(II)].

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| S-EPMC3120506 | biostudies-literature

Poly[[chloridodimethanol(?(3)-pyridine-2,3-dicarboxyl-ato)europium(III)] methanol monosolvate].

Project description:The asymmetric unit of the title compound, {[Eu(C(7)H(3)NO(4))Cl(CH(3)OH)(2)]·CH(3)OH}(n), contains one Eu(III) ion, one pyridine 2,3-dicarboxylate dianion (PDC), two CH(3)OH mol-ecules coordinating to the metal atom, one coordinating chloride and one lattice occluded CH(3)OH mol-ecule. In the crystal, each PDC anion coordinates to three adjacent Eu(III) ions by the pyridine N and O atoms of the carboxyl-ate groups. The Eu(III) cation is eightfold coordinated by four carboxyl-ate O atoms, one pyridine N atom, two MeOH and one chloride anion in the form of a distorted polyhedron. Extended coordination of the PDC ligand lead to the formation of a two-dimensional coordination polymer parallel to (10-1).

| S-EPMC3344402 | biostudies-literature

catena-Poly[[[diaqua-iron(II)]-μ-pyridine-2,5-dicarboxyl-ato-[tetra-aqua-iron(II)]-μ-pyridine-2,5-dicarboxyl-ato] tetra-hydrate].

Project description:In the crystal structure of the title compound, {[Fe(2)(C(7)H(3)NO(4))(2)(H(2)O)(6)]·4H(2)O}(n), there are two types of coordination for the Fe(II) atoms. One Fe(II) atom is in a distorted octa-hedral N(2)O(4) environment, with two chelating rings from the pyridine-dicarboxyl-ate ligands and two O atoms from the water mol-ecules, while the other is in a distorted octa-hedral O(6) environment with two O atoms from the pyridine-dicarboxyl-ate ligands and four O atoms from the water mol-ecules. Both Fe(II) atoms lie on crystallographic centers of symmetry. The complex possesses an infinite chain structure running along the [101] direction. These chains are inter-connected by the uncoordinated water mol-ecules through O-H⋯O hydrogen bonds.

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Poly[(?(5)-2,2'-bipyridine-5,5'-dicarboxyl-ato)lead(II)].

Project description:In the title polymeric compound, [Pb(C(12)H(6)N(2)O(4))](n), the Pb(II) cation, located on a mirror plane, is N,N'-chelated by a 2-2'-bipyridine-5,5'-dicarboxyl-ate (bpdc) anion and is further coordinated by six O atoms from four carboxyl groups of bpdc anions in an irregular N(2)O(6) geometry. The carboxylate groups bridge the Pb(II) cations, forming a three-dimensional polymeric structure. The carboxyl-ate group is twisted away from the attached pyridine ring by 11.4?(3)°.

| S-EPMC3435613 | biostudies-literature

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