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Poly[[hexa-aqua-(?(2)-oxalato-?O,O:O,O)bis(?(3)-pyridine-2,4-dicarboxyl-ato-?N,O:O:O)dicerium(III)] monohydrate].

ABSTRACT: In the polymeric title compound, {[Ce(2)(C(7)H(3)NO(4))(2)(C(2)O(4))(H(2)O)(6)]·H(2)O}(n), the Ce(3+) cation is nine-coordinated in a distorted CeNO(8) tricapped trigonal-prismatic geometry, formed by three pyridine-2,4-dicarboxyl-ate anions, one oxalate anion and three water mol-ecules. The mid-point of the oxalate anion is located on an inversion center. The oxalate and pyridine-2,4-dicarboxyl-ate anions bridge the Ce(3+) cations, forming a two-dimensional polymeric complex parallel to (010). Inter-molecular classical O-H?O hydrogen bonding and weak C-H?O hydrogen bonding are present in the crystal structure and ?-? stacking [centroid-centroid distance = 3.558?(2)?Å] is observed between parallel pyridine rings of adjacent mol-ecules. The uncoordinated water mol-ecule shows an occupancy of 0.5.

SUBMITTER: Shen FM

PROVIDER: S-EPMC3254299 | biostudies-literature | 2012 Jan

REPOSITORIES: biostudies-literature

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Poly[[hexa-aqua-(μ(2)-oxalato-κO,O:O,O)bis(μ(3)-pyridine-2,4-dicarboxyl-ato-κN,O:O:O)dicerium(III)] monohydrate].

Shen Fwu Ming FM Lush Shie Fu SF

Acta crystallographica. Section E, Structure reports online 20111207 Pt 1

In the polymeric title compound, {[Ce(2)(C(7)H(3)NO(4))(2)(C(2)O(4))(H(2)O)(6)]·H(2)O}(n), the Ce(3+) cation is nine-coordinated in a distorted CeNO(8) tricapped trigonal-prismatic geometry, formed by three pyridine-2,4-dicarboxyl-ate anions, one oxalate anion and three water mol-ecules. The mid-point of the oxalate anion is located on an inversion center. The oxalate and pyridine-2,4-dicarboxyl-ate anions bridge the Ce(3+) cations, forming a two-dimensional polymeric complex parallel to (010). ...[more]

PMID: 22259328

Similar Datasets

Poly[[hexa-aqua-(?(2)-oxalato-?O,O:O,O)bis-(?(3)-pyridine-2,4-dicarboxyl-ato-?N,O:O:O)dilanthanum(III)] monohydrate].

Project description:In the polymeric title compound, {[La(2)(C(7)H(3)NO(4))(2)(C(2)O(4))(H(2)O)(6)]·H(2)O}(n), the La(3+) cation is nine-coordinated in a distorted LaNO(8) tricapped trigonal-prismatic geometry formed by three pyridinedicarboxylate anions, one oxalate anion and three water mol-ecules. The oxalate anion is located on an inversion center. The oxalate and pyridine-dicarboxyl-ate anions bridge the La(3+) cations, forming a two-dimensional polymeric complex parallel to (010). Inter-molecular O-H?O hydrogen bonding and weak C-H?O hydrogen bonding is present in the crystal structure and ?-? stacking [centroid-centroid distance = 3.571?(3)?Å] is observed between parallel pyridine rings of adjacent mol-ecules. The uncoordinated water molecule shows an occupancy of 0.5.

| S-EPMC3238643 | biostudies-literature

Poly[hexa-aqua-hexa-kis-(?-pyridine-2,4-dicarboxyl-ato)tricopper(II)dieuropium(III)].

Project description:The asymmetric unit of the title heterometallic coordination polymer, [Cu(3)Eu(2)(C(7)H(3)NO(4))(6)(H(2)O)(6)](n), contains one Eu(III) and two Cu(II) atoms, three pyridine-2,4-dicarboxylate (pdc)(2-) anions and three water molecules. One Cu(II) atom is located on an inversion center and is N,O-chelated by two pdc(2-) anions in the equatorial plane and further coordinated by two carboxyl-ate O atoms from another two pdc anions in the axial positions, with an elongated octa-hedral geometry [Cu-O = 2.409?(3)?Å in the axial direction]; the other Cu atom is N,O-chelated by two pdc anions in the coordination basal plane and coordinated by a carboxyl O atom at the apical position with a distorted square-pyramidal geometry [Cu-O = 2.359?(3)?Å in the apical direction]. The Eu atom is eight-coordinated with a distorted square-anti-prismatic geometry formed by five carboxyl-ate O atoms from five pdc anions and three water mol-ecules. The carboxyl-ate anions bridge adjacent Eu and Cu atoms, forming the coordination polymer. Inter- and intra-molecular O-H?O hydrogen bonding occurs in the structure. ?-? stacking further consolidates the crystal structure, the centroid-centroid distance between parallel pyridine rings being 3.367?(2)?Å.

| S-EPMC3011568 | biostudies-literature

Poly[μ(2)-aqua-aqua-μ(4)-pyridine-2,4-dicarboxyl-ato-strontium].

Project description:In the title polymeric complex, [Sr(C(7)H(3)NO(4))(H(2)O)(2)](n), the Sr(II) atom is eight-coordinated by four O atoms and one N atom of four pyridine-2,4-dicarboxyl-ate (py-2,4-dc) ligands and three O atoms of three coordinated water mol-ecules in a dodeca-hedral geometry. These units are connected via the carboxyl-ate O atoms and water mol-ecules, building polymeric layers parallel to (100). In the crystal structure, non-covalent inter-actions consisting of O-H⋯O hydrogen bonds and π-π stacking inter-actions [centroid-centroid distances = 3.862 (17) and 3.749 (17) Å] connect the various components, forming a three-dimensional structure.

| S-EPMC2977487 | biostudies-literature

Poly[triaqua-tris-(μ(4)-pyridine-3,5-dicarboxyl-ato)dicerium(III)].

Project description:The asymmetric unit of the title compound, [Ce(2)(C(7)H(3)NO(4))(3)(H(2)O)(3)](n), contains two Ce(III) cations, three pyridine-3,5-dicarboxyl-ate (pyd) anions and three coordinated water mol-ecules. One Ce(III) cation is coordinated by seven carboxyl-ate O atoms from six pyd anions and two water mol-ecules in a square-face-capped square-anti-prismatic geometry. Another Ce(III) cation is coordinated by seven O atoms from six pdy anions and one water mol-ecule in a bicapped trigonal-prismatic geometry. The pdy anions bridge the Ce(III) cations, forming the three-dimensional polymeric structure. The crystal structure contains extensive O-H⋯O, O-H⋯N and weak C-H⋯O hydrogen bonds. π-π stacking is present in the crystal structure, the shortest centroid-centroid distance between parallel pyridine rings being 3.509 (4) Å.

| S-EPMC3051676 | biostudies-literature

Poly[?(6)-pyridine-2,4-dicarboxyl-ato-barium].

Project description:In the title complex, [Ba(C(7)H(3)NO(4))](n), the coordination geometry around the Ba(II) ion can be described as a distorted bicapped trigonal-prismatic BaNO(7) arrangement. The pyridine-2,4-dicarb-oxy-lic acid ligands exhibit a new coordination mode. Adjacent metal centers are linked by the O atoms of the pyridine-2,4-dicarb-oxy-lic acid ligands, and then form a three-dimensional supra-molecular polymeric framework.

| S-EPMC3006690 | biostudies-literature

Poly[piperazinediium [[aqua-bismuth-ate(III)]-di-μ-pyridine-2,6-dicarboxyl-ato-bis-muthate(III)-di-μ-pyridine-2,6-dicarboxyl-ato] monohydrate].

Project description:The title compound, {(C(4)H(12)N(2))[Bi(2)(C(7)H(3)NO(4))(4)(H(2)O)]·H(2)O}(n) or {(pipzH(2))[Bi(2)(pydc)(4)(H(2)O)]·H(2)O}(n), where pydcH(2) is pyridine-2,6-dicarboxylic acid and pipz is piperazine, was obtained by reaction of Bi(NO(3))(3)·5H(2)O with (pipzH(2))(pydc-H)(2)·3H(2)O in a 1:2 molar ratio in aqueous solution. There are two independent Bi(III) atoms in the structure, one of which is eight-coordinate with a distorted bicapped trigonal-prismatic geometry, and another which is nine-coordinate with a distorted tricapped trigonal-prismatic geometry. The carboxyl-ate groups of the (pydc)(2-) ligands link dinuclear [Bi(2)(C(7)H(3)NO(4))(4)(H(2)O)](2-) units into one-dimensional coordin-ation polymers. The pipzH(2) (2+) cations (site symmetry ) and non-coordinated water mol-ecules lie between these polymers, forming N-H⋯O and O-H⋯O hydrogen bonds to the O atoms of the carboxylate groups.

| S-EPMC2960170 | biostudies-literature

Poly[[octa-aqua-tetra-kis-(?(3)-pyridine-2,5-dicarboxyl-ato)copper(II)diytterbium(III)] monohydrate].

Project description:The asymmetric unit of the title heterometallic polymeric coordination compound, {[CuYb(2)(C(7)H(3)NO(4))(4)(H(2)O)(8)]·H(2)O}(n), contains one Cu(II) cation located on an inversion center, a Yb(III) cation, two pyridine-2,5-dicarboxyl-ate (pda) anions, four coordination water mol-ecules a disordered lattice water molecule, which is half-occupied and is located close to an inversion center. The Cu(II) cation is N,O-chelated by two pda anions in the coordination basal plane and further coordinated by two carboxyl O atoms at the apical positions, with an elongated octa-hedral geometry. The Yb(III) atom is eight-coordinated in a distorted square-anti-prismatic geometry formed by two carboxyl-ate O atoms from two pda anions, and is N,O-chelated by one pda anion and four coordinated water mol-ecules. The pda anions bridge adjacent Yb and Cu cations, forming a three-dimensional polymeric structure. The crystal structure features extensive O-H?O hydrogen bonds. ?-? stacking is observed between parallel pyridine rings, the centroid-centroid distance being 3.843?(4)?Å.

| S-EPMC3089069 | biostudies-literature

catena-Poly[diammonium [diaqua-bis(pyridine-2,4-dicarboxyl-ato-?N,O)cuprate(II)] [[diaqua-copper(II)]-?-pyridine-2,4-dicarboxyl-ato-?N,O:O-[tetra-aqua-cadmium(II)]-?-pyridine-2,4-dicarboxyl-ato-?O:N,O] hexa-hydrate].

Project description:The title mixed-metal complex, {(NH(4))(2)[Cu(C(7)H(3)NO(4))(2)(H(2)O)(2)][CdCu(C(7)H(3)NO(4))(2)(H(2)O)(6)]·6H(2)O}(n), contains one octa-hedrally coordinated Cd(II) center and two octa-hedrally coordinated Cu(II) centers, each lying on an inversion center. The two Cu(II) atoms are each coordinated by two O atoms and two N atoms from two 2,4-pydc (2,4-H(2)pydc = pyridine-2,4-dicarboxylic acid) ligands in the equatorial plane and two water mol-ecules at the axial sites, thus producing two crystallographically independent [Cu(2,4-pydc)(2)(H(2)O)(2)](2-) metalloligands. One metalloligand exists as a discrete anion and the other connects the Cd(H(2)O)(4) units, forming a neutral chain. O-H?O and N-H?O hydrogen bonds connects the polymeric chains, complex anions, ammonium cations and uncoordinated water mol-ecules into a three-dimensional supra-molecular network.

| S-EPMC2971796 | biostudies-other

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

Project description:In the title compound, [CoNa(2)(C(7)H(3)NO(4))(2)(H(2)O)(2)](n), the Co(II) atom is coordinated by two pyridine N atoms and four carboxyl-ate O atoms from two doubly deprotonated pyridine-2,6-dicarboxyl-ate ligands in a distorted octa-hedral geometry. One Na(+) cation is coordinated by three carboxyl-ate O atoms and two water mol-ecules and the other is coordinated by five carboxyl-ate O atoms and two water mol-ecules in an irregular geometry. The bis-(pyridine-2,6-dicarboxyl-ato)cobalt complex units are connected by Na(+) cations and bridging water mol-ecules into a three-dimensional coordination network. O-H?O hydrogen bonds are formed between the water mol-ecules and the carboxyl-ate O atoms.

| S-EPMC3238695 | biostudies-literature

Di-?-hydroxido-bis-[aqua-(pyridine-2,6-dicarboxyl-ato)iron(III)] monohydrate.

Project description:In the dinuclear title complex, [Fe(2)(OH)(2)(C(7)H(3)NO(4))(2)(H(2)O)(2)]·H(2)O, the two Fe atoms are separated by 3.063?(1)?Å. Inter-molecular O-H?O hydrogen bonds form an extensive three-dimensional hydrogen-bonding network, which consolidates the crystal packing.

| S-EPMC3009288 | biostudies-literature

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