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Catena-Poly[(aqua-dimethano-lzinc)-?-furan-2,5-dicarboxyl-ato-?(3)O(2):O(2),O(2')].

ABSTRACT: In the crystal structure of the title compound, [Zn(C(6)H(2)O(5))(CH(3)OH)(2)(H(2)O)](n), an infinite chain is formed along the b axis by linking of the Zn(OH(2))(CH(3)OH)(2) unit with one carboxyl-ate group of the furan-2,5-dicarboxyl-ate ligand. The Zn(II) ion is in a distorted octa-hedral environment with one weak coordination [Zn-O(carboxyl-ate) = 2.565?(3)?Å] and two meth-anol mol-ecules located in axial positions. In the chain, O(water)-H?O hydrogen bonds are present, while adjacent chains are linked by O(methanol)-H?O hydrogen bonds into a layer parallel to (10-2).

SUBMITTER: Li YF

PROVIDER: S-EPMC3344337 | biostudies-literature | 2012 May

REPOSITORIES: biostudies-literature

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catena-Poly[(aqua-dimethano-lzinc)-μ-furan-2,5-dicarboxyl-ato-κ(3)O(2):O(2),O(2')].

Li Ya-Feng YF Gao Yue Y Xu Yue Y Qin Xiao-Lin XL Gao Wen-Yuan WY

Acta crystallographica. Section E, Structure reports online 20120413 Pt 5

In the crystal structure of the title compound, [Zn(C(6)H(2)O(5))(CH(3)OH)(2)(H(2)O)](n), an infinite chain is formed along the b axis by linking of the Zn(OH(2))(CH(3)OH)(2) unit with one carboxyl-ate group of the furan-2,5-dicarboxyl-ate ligand. The Zn(II) ion is in a distorted octa-hedral environment with one weak coordination [Zn-O(carboxyl-ate) = 2.565 (3) Å] and two meth-anol mol-ecules located in axial positions. In the chain, O(water)-H⋯O hydrogen bonds are present, while adjacent chains ...[more]

PMID: 22590103

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catena-Poly[[[aqua-(2,2'-bipyridine-?(2) N,N')zinc]-?-furan-2,5-dicarboxyl-ato-?(2) O (2):O (5)] dihydrate].

Project description:In the title hydrated coordination polymer, {[Zn(C6H2O5)(C10H8N2)(H2O)]·2H2O} n , an infinite [1-10] chain is formed by the linking of [Zn(C10H8N2)(H2O)](2+) entities by bridging, monodentate furan-2,5-dicarboxyl-ate dianionic linkers. The Zn(2+) coordination geometry is a trigonal bipyramid, with one N atom (from 2,2'-bipyridine) and one O atom (from the bridging dianion) in the axial positions. For each Zn(II) atom, the dihedral angle between the furan ring of its coordinated bridging ligand and its coordinated bipyridine ring system is 87.19?(8)°. O-H?O hydrogen bonds involving both the coordinated and uncoordinated water mol-ecules generate a layer motif parallel to (001).

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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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catena-Poly[[aqua-trimethyl-tin(IV)]-{[trimethyl-tin(IV)]-?(3)-thio-phene-2,5-dicarboxyl-ato}].

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catena-Poly[diimidazolium [bis-(?-pyridine-2,5-dicarboxyl-ato)bis-[diaqua-praseodymate(III)]]-bis-(?-pyridine-2,5-dicarboxyl-ato)].

Project description:The title compound {(C(3)H(5)N(2))(2)[Pr(2)(C(7)H(3)NO(4))(4)(H(2)O)(4)]}(n), has a chain structure featuring a dimeric unit consisting of two Pr(III) atoms within a dodecahedral environment. Each of the metal cations is coordinated by two N atoms and two O atoms from two pyridine-2,5-dicarboxyl-ate ligands, two O atoms from another two pyridine-2,5-dicarboxyl-ate ligands and two water O atoms. The Pr(III) ions are bridged by two ligands along the c axis, forming the dimeric unit, and these are connected by four ligands along the b axis, forming a chain. N-H?O and O-H?O hydrogen bonds are found in the structure.

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Poly[di-?-aqua-?(4)-(pyrazine-2,5-dicarboxyl-ato)-dilithium(I)].

Project description:In the title coordination polymer, [Li(2)(C(6)H(2)N(2)O(2))(H(2)O)(2)](n) the pyrazine-2,5-dicarboxyl-ate dianionic ligand bridges two symmetry-independent Li(+) ions using both its N,O-chelating sites. The carboxyl-ate O atom of one of them also bridges to another Li(+) ion, while the second O atom of this group is bonded to another Li(+) ion. Two symmetry-independent water O atoms participate also in the bridging system, which gives rise to a polymeric three-dimensional framework. Both Li(+) ions show distorted trigonal-bipyramidal LiNO(4) coordination geometries, with the N atom in an axial site in both cases. The packing is consolidated by O-H?O hydrogen bonds, which occur between water mol-ecules as donors and carboxyl-ate O atoms as acceptors.

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Poly[piperazinediium [aqua-bis(?-pyridine-2,5-dicarboxyl-ato)zincate] dihydrate].

Project description:The polymeric title compound, {(C(4)H(12)N(2))[Zn(C(7)H(3)NO(4))(2)(H(2)O)]·2H(2)O}(n), was obtained by the reaction of zinc(II) nitrate hexa-hydrate with the proton-transfer compound (pipzH(2))(py-2,5-dc) (where pipz is piperazine and py-2,5-dcH(2) is pyridine-2,5-dicarboxylic acid) in aqueous solution. Each Zn(II) atom is coordinated in a distorted octa-hedral geometry by four O atoms and two N atoms from one water mol-ecule and two (py-2,5-dc)(2-) ligands, which also act as bridging ligands between Zn(II) atoms. ?-? Stacking inter-actions between two aromatic rings of (py-2,5-dc)(2-) fragments, with centroid-centroid distances of 3.4747?(7) and 3.7081?(7)?Å are observed. The crystal structure is stabilized by O-H?O and N-H?O hydrogen bonds.

| S-EPMC2915064 | biostudies-literature

Poly[tetra-aqua-bis-(μ(4)-thio-phene-2,5-dicarboxyl-ato)(μ(2)-thio-phene-2,5-dicarboxyl-ato)dieuropium(III)].

Project description:The three-dimensional coordination polymer, [Eu(2)(C(6)H(2)O(4)S)(3)(H(2)O)(4)](n), has been synthesized under hydro-thermal conditions. The asymmetric unit comprises one Eu(3+) cation, two aqua ligands and one and a half thiophene-2,5-dicarboxylate anions (the half-anion being completed by a twofold rotation axis). The Eu(3+) cation is eight-coordinated in a distorted dodeca-hedral geometry. The crystal structure features O-H⋯O hydrogen bonds.

| S-EPMC3414099 | biostudies-literature

Poly[aqua-(dimethyl sulfoxide)(?(4)-pyridine-2,5-dicarboxyl-ato)calcium(II)].

Project description:In the polymeric title compound, [Ca(C(7)H(3)NO(4))(H(2)O)(C(2)H(6)OS)](n), the Ca(II) ion is coordinated in a distorted penta-gonal-bipyramidal CdNO(6) geometry. The crystal packing is stabilized by O-H?O hydrogen bonds and ?-? stacking inter-actions between the aromatic rings of pyridine-2,5-dicarb-oxy-late with centroid-centroid distances of 3.6166?(13)?Å.

| S-EPMC3051525 | biostudies-literature

catena-Poly[[aqua-(imidazole)-cadmium(II)]-?(3)-benzene-1,3-dicarboxyl-ato].

Project description:In the title compound, [Cd(C(8)H(4)O(4))(C(3)H(4)N(2))(H(2)O)](n), the Cd(II) ion is seven-coordinated by five O atoms from three crystallographically independent benzene-1,3-carboxylate ligands, one N atom from the imidazole ligand and one coordinated water mol-ecule. Neighboring Cd(II) ions are bridged by the benzene-1,3-dicarboxyl-ate ligands, forming a zigzag polymeric chain structure. These chains are further extended into a three-dimensional supra-molecular structure through O-H?O and N-H?O hydrogen bonds.

| S-EPMC3006711 | biostudies-literature

catena-Poly[(triaqua-zinc)-?-furan-2,5-dicarboxyl-ato-?(3)O(2):O(2),O(2')].

Project description:In the crystal structure of the title compound, [Zn(C(6)H(2)O(5))(H(2)O)(3)](n), an infinite chain is formed along [001] by linking of the Zn(H(2)O)(3) entities with one carboxyl-ate group of the furan-2,5-dicarboxyl-ate ligand. Adjacent chains are linked by O(water)-H?O hydrogen-bonding inter-actions. The Zn(H(2)O)(3)O(3) polyhedron displays a distorted octa-hedral geometry with one weak Zn-O(carboxyl-ate) coordination [2.433?(8) A°] and two water mol-ecules located in axial positions. Except for one of the axial water molecules and two adjacent H atoms, the other atoms (including H atoms) possess site symmetry m.

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