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Poly[diaqua-(μ-oxalato)(μ-2-oxidopyridinium-3-carboxyl-ato)lanthanum(III)].

ABSTRACT: In the title complex, [La(C(6)H(4)NO(3))(C(2)O(4))(H(2)O)(2)](n), the La(III) ion is coordinated by eight O atoms from two 2-oxido-pyridinium-3-carboxyl-ate ligands, two oxalate ligands and two water mol-ecules in a distorted bicapped square-anti-prismatic geometry. The carboxyl-ate groups link adjacent La(III) ions, forming two-dimensional layers that are further linked by N-H⋯O and O-H⋯O hydrogen bonds.

SUBMITTER: Hu Z

PROVIDER: S-EPMC2969809 | biostudies-literature | 2009 May

REPOSITORIES: biostudies-literature

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Poly[diaqua-(μ-oxalato)(μ-2-oxidopyridinium-3-carboxyl-ato)lanthanum(III)].

Hu Zhen Z Zhu Zhi-Bo ZB

Acta crystallographica. Section E, Structure reports online 20090523 Pt 6

In the title complex, [La(C(6)H(4)NO(3))(C(2)O(4))(H(2)O)(2)](n), the La(III) ion is coordinated by eight O atoms from two 2-oxido-pyridinium-3-carboxyl-ate ligands, two oxalate ligands and two water mol-ecules in a distorted bicapped square-anti-prismatic geometry. The carboxyl-ate groups link adjacent La(III) ions, forming two-dimensional layers that are further linked by N-H⋯O and O-H⋯O hydrogen bonds. ...[more]

PMID: 21583041

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Poly[diaqua-μ-oxalato-μ-pyrazine-2-carbox-yl-ato-lanthanum(III)].

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Poly[diaqua-μ(2)-isonicotinato-μ(2)-oxalato-terbium(III)].

Project description:In the crystal structure of the title complex, [Tb(C(6)H(4)NO(2))(C(2)O(4))(H(2)O)(2)](n), the Tb(III) cation is coordinated by four O atoms from two oxalate ligands, two O atoms from two isonicotinate ligands and two O atoms from water mol-ecules within a distorted square-anti-prismatic coordination. The Tb(III) cation, the isonicotinate anion and the two crystallographically independent water mol-ecules occupy general positions, whereas one of the two crystallographically independent oxalate anions is located on a center of inversion, and the second oxalate anion is located on a twofold rotation axis. The Tb(III) cations are linked by the oxalate and isonicotinate anions into layers, which are connected via inter-molecular hydrogen-bonding and π-π stacking [with centroid-to-centroid distances of 3.509 (2) and 3.343 (3) Å] inter-actions into a three-dimensional network.

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Poly[diaqua-μ(2)-isonicotinato-μ(2)-oxalato-terbium(III)].

Project description:In the crystal structure of the title complex, [Tb(C(6)H(4)NO(2))(C(2)O(4))(H(2)O)(2)](n), the Tb(III) ion is coordinated by two O atoms from two isonicotinate (inic) anions, four O atoms of two oxalate anions, and two water mol-ecules, displaying a distorted square-antiprismatic geometry. The Tb(III) ion, the inic anion and the water mol-ecules occupy general positions. One of the two crystallographically independent oxalate anions is located on a center of inversion, whereas the second is located on the twofold rotation axis. The carboxyl-ate groups of the inic and oxalate anions link the terbium metal centres into layers. These layers are connected by O-H⋯O and N-H⋯O hydrogen bonding into a three-dimensional network.

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Poly[diaqua-μ(2)-oxalato-di-μ(4)-terephthalato-diytterbium(III)].

Project description:The crystal structure of the title complex, [Yb(2)(C(8)H(4)O(4))(2)(C(2)O(4))(H(2)O)(2)](n), features an extended three-dimensional framework made up of Yb(3+) ions coordinated by terephthalate ligands, oxalate ligands and water mol-ecules. The Yb(3+) ion has a distorted square-anti-prismatic coordination formed by one aqua ligand, two O atoms from an oxalate ligand and five O atoms belonging to four terephthalate anions. Two symmetry-independent terephthalate anions, as well as the oxalate anion, occupy special positions on inversion centers. The water molecule participates in O-H⋯O hydrogen bonding with both terephthalate anions.

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Poly[diaqua-μ(2)-oxalato-di-μ(4)-succinato-diyttrium(III)].

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