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Poly[diaqua-(?-oxalato)(?-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-other | 2009 May

REPOSITORIES: biostudies-other

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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

Similar Datasets

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

Project description:In the title complex, [La(C(5)H(3)N(2)O(2))(C(2)O(4))(H(2)O)(2)](n), the La(III) ion is coordinated by one N and three O atoms from two pyrazine-2-carboxylate ligands, by four O atoms from two oxalate ligands and by two O atoms of two water molecules, displaying a distorted bicapped square-anti-prismatic geometry. The carboxyl-ate groups of pyrazine-2-carboxyl-ate and oxalate ligands link the lanthanum metal centres, forming layers parallel to (10). The layers are further connected by inter-molecular O-H⋯O and N-H⋯O hydrogen-bonding inter-actions, forming a three-dimensional supra-molecular network.

| S-EPMC2967913 | biostudies-literature

Poly[[(?-3-amino-pyrazine-2-carboxyl-ato-?N,O:O')diaqua-(?-oxalato-?O,O:O,O)lanthanum(III)] monohydrate].

Project description:The water-coordinated La(III) atom in the title compound, {[La(C(5)H(4)N(3)O(2))(C(2)O(4))(H(2)O)(2)]·H(2)O}(n), is N,O-chelated by a 3-amino-pyrazine-2-carboxyl-ate ion; this ion links adjacent metal atoms to form a chain parallel to [010]. The oxalate ion serves as a bis-bidentate chelate that links adjacent metal atoms to form a chain parallel to [001]. The two bridging ions give rise to a layer motif parallel to (100) in which the La(III) atom exists in a distorted tricapped trigonal prismatic geometry. Extensive hydrogen bonding between the constituents stabilizes the structure.

| S-EPMC3200678 | biostudies-literature

Poly[diaqua-(?-oxalato)(?-2-oxido-pyridinium-3-carboxyl-ato)praseo-dymium(III)].

Project description:In the title complex, [Pr(C(6)H(4)NO(3))(C(2)O(4))(H(2)O)(2)](n), each Pr(III) ion is coordinated by eight O atoms from two 2-oxynicotinate ligands, two oxalate ligands and two water mol-ecules, displaying a distorted bicapped square-anti-prismatic geometry. The carboxyl-ate groups link adjacent praseodymium metal centres, forming layers parallel to the bc plane. The crystal packing is stabilized by inter-molecular O-H?O and N-H?O hydrogen bonds.

| S-EPMC2968694 | biostudies-literature

Poly[diaqua-?(2)-oxalato-di-?(2)-pyrimidine-2-carboxyl-ato-dimanganese(II)].

Project description:In the title compound, [Mn(2)(C(2)O(4))(C(5)H(3)N(2)O(2))(2)(H(2)O)(2)](n), the Mn(II) atom exhibits a distorted octa-hedral coordination geometry, with the centrosymmetric oxalate anion and the monoanionic pyrimidine-2-carboxyl-ate ligands generating a two-dimensional honeycomb network with a (6,3)-topology.

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catena-Poly[[diaqua-dibromidoman-ganese(III)]-?-pyridine-2-carboxyl-ato].

Project description:The asymmetric unit of the title compound, [MnBr(2)(C(6)H(4)NO(2))(H(2)O)(2)](n), contains one monomeric unit of the neutral linear coordination polymer. The Mn(3+) ions are bridged by anionic pyridine-2-carboxyl-ate (pic) ligands, thereby forming a chain-like structure along the c axis, and are six-coordinated in a distorted octa-hedral environment by two O atoms of the two different carboxyl-ate groups, two O atoms of two water mol-ecules and two Br atoms. The complex displays inter-molecular O-H?Br, O-H?N, O-H?O, C-H?O and C-H?Br hydrogen bonding. There may also be inter-molecular ?-? inter-actions between adjacent pyridine rings, with a centroid-centroid distance of 3.993?(8)?Å.

| S-EPMC2977438 | biostudies-literature

Poly[diaqua-(μ(2)-oxalato-κO,O:O,O)(μ(2)-pyrazine-2-carboxyl-ato-κN,O:O,O')neodymium(III)].

Project description:In the title complex, [Nd(C(5)H(3)N(2)O(2))(C(2)O(4))(H(2)O)(2)](n), the Nd(III) atom is ten-coordinated by one N atom and three O atoms from two pyrazine-2-carboxyl-ate ligands, four O atoms from two oxalate ligands and two water mol-ecules in a distorted bicapped square-anti-prismatic geometry. The two crystallographically independent oxalate ligands, each lying on an inversion center, act as bridging ligands, linking Nd atoms into an extended zigzag chain. Neighboring chains are linked by the pyrazine-2-carboxyl-ate ligands into a two-dimensional layerlike network in the (10) plane. The layers are further connected by O-H⋯O and O-H⋯N hydrogen bonds, forming a three-dimensional supra-molecular network.

| S-EPMC2969933 | biostudies-literature

Poly[[hemi-?(4)-oxalato-hemi-?(2)-oxalato-bis-(?(3)-pyrazine-2-carboxyl-ato)erbium(III)silver(I)] monohydrate].

Project description:The asymmetric unit of the title complex, {[AgEr(C(5)H(3)N(2)O(2))(2)(C(2)O(4))]·H(2)O}(n), contains one Er(III) atom, one Ag(I) atom, two pyrazine-2-carboxyl-ate (pyc) ligands, two half oxalate ligands (each lying on an inversion center) and one uncoordinated water mol-ecule. The Er(III) atom is coordinated by two O atoms and two N atoms from two pyc ligands, one O atom from a third pyc ligand and four O atoms from two oxalate ligands in a distorted monocapped square-anti-prismatic geometry. The Ag(I) atom is coordinated by two N atoms from two pyc ligands, one O atom from a third pyc ligand and one O atom from one oxalate ligand. The crystal structure exhibits a three-dimensional heterometallic polymeric network. O-H?O hydrogen bonding between the uncoordinated water mol-ecule and carboxyl-ate O atoms is observed.

| S-EPMC2977120 | biostudies-literature

Poly[[hemi-?(4)-oxalato-hemi-?(2)-oxalato-bis-(?(3)-pyrazine-2-carboxyl-ato)neodymium(III)silver(I)] monohydrate].

Project description:In the title coordination polymer, {[AgNd(C(5)H(3)N(2)O(2))(2)(C(2)O(4))]·H(2)O}(n), the Nd(III) atom is coordinated in a distorted monocapped square-anti-prismatic geometry by two O and two N atoms of two N,O-bidentate pyrazine-2-carboxyl-ate (2-pzc) ligands, four O atoms of two bidentate oxalate ligands, and one O atom of a monodentate carboxyl-ate group of a 2-pzc ligand. The Ag(I) ion is coordinated in a distorted tetra-hedral geometry by two N atoms from two monodentate 2-pzc ligands, one O atom from one monodentate oxalate ligand and one O atom of a bridging carboxyl-ate group of a 2-pzc ligand. The oxalate anions link neighbouring neodymium(III) metal centres into Nd-oxalate chains, which are inter-connected by Ag(2-pyz)(2) units, forming a three-dimensional polymeric framework. Inter-molecular O-H?O and C-H?O hydrogen bonds are observed in the crystal structure.

| S-EPMC2969187 | biostudies-literature

Poly[[tetra-?(3)-acetato-hexa-?(2)-acetato-diaqua-?(2)-oxalato-tetra-lanthanum(III)] dihydrate].

Project description:The title compound, {[La(4)(CH(3)CO(2))(10)(C(2)O(4))(H(2)O)(2)]·2H(2)O}(n), exhibits a two-dimensional layered structure with the oxalate and acetate ligands acting as bridges. The asymmetric unit contains two crystallographically independent lanthanum(III) ions, half of an oxalate ligand, five acetate ligands, one coordinated water mol-ecule and one uncoordinated water mol-ecule. The coordination numbers of the two La ions are 9 and 10. Adjacent layers of the structure, which extend parallel to (100), are linked by O-H?O hydrogen bonds and are also held together by van der Waals inter-actions between the CH(3) groups of the acetate anions.

| S-EPMC3201431 | biostudies-other

Poly[diaqua(?(2)-oxalato-?O,O:O,O)(?(2)-pyrazine-2-carboxyl-ato-?N,O:O')cerium(III)].

Project description:In the hydro-thermally synthesized title compound, [Ce(C(5)H(3)N(2)O(2))(C(2)O(4))(H(2)O)(2)](n), the Ce(III) ion is coordinated by four O atoms from two different oxalate ligands, three O atoms from two symmetry-related pyrazine-2-carboxyl-ate ligands, two O atoms from two water melecules and one N atom from a pyrazine-2-carboxyl-ate ligand in a distorted bicapped square-anti-prismatic coordination geometry. The oxalate and pyrazine-2-carboxyl-ate ligands bridge the Ce(III) ions, forming a two-dimensional structure. In addition, inter-molecular O-H?O and O-H?N hydrogen bonds connect the two-dimensional structure into a three-dimensional network.

| S-EPMC2959293 | biostudies-other

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