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Poly[[diaqua-tris-(?(2)-3-methyl-pyridine-2-carboxyl-ato)(3-methyl-pyridine-2-car-boxyl-ato)sodiumterbium(III)] ethanol monosolvate monohydrate].

ABSTRACT: In the title compound, {[NaTb(C(7)H(6)NO(2))(4)(H(2)O)(2)]·C(2)H(5)OH·H(2)O}(n), the Tb(III) atom is eight-coordinated in a slightly distorted square-anti-prismatic geometry defined by four carboxyl-ate O atoms and four pyridine N atoms. The bond lengths lie within the range 2.3000?(2)-2.326?(2)?Å for the Tb-O bonds and 2.543?(3)-2.553?(3)?Å for the Tb-N bonds. The Na(I) atom is five-coordinated by two water O atoms and three carboxyl-ate O atoms in a distorted square-pyramidal geometry. In the crystal, inter-molecular O-H?O hydrogen bonds link the mol-ecules into a three-dimensional network.

SUBMITTER: Lee T

PROVIDER: S-EPMC3009174 | biostudies-other | 2010

REPOSITORIES: biostudies-other

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Poly[[diaqua-tris-(μ(2)-3-methyl-pyridine-2-carboxyl-ato)(3-methyl-pyridine-2-car-boxyl-ato)sodiumterbium(III)] ethanol monosolvate monohydrate].

Lee Taewoo T Kang Sung Kwon SK

Acta crystallographica. Section E, Structure reports online 20101002 Pt 11

In the title compound, {[NaTb(C(7)H(6)NO(2))(4)(H(2)O)(2)]·C(2)H(5)OH·H(2)O}(n), the Tb(III) atom is eight-coordinated in a slightly distorted square-anti-prismatic geometry defined by four carboxyl-ate O atoms and four pyridine N atoms. The bond lengths lie within the range 2.3000 (2)-2.326 (2) Å for the Tb-O bonds and 2.543 (3)-2.553 (3) Å for the Tb-N bonds. The Na(I) atom is five-coordinated by two water O atoms and three carboxyl-ate O atoms in a distorted square-pyramidal geometry. In the ...[more]

PMID: 21588794

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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.

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Poly[[diaqua-(?(8)-benzene-1,2,4,5-tetra-carboxyl-ato)calciumzinc] monohydrate].

Project description:In the title complex, {[CaZn(C(10)H(2)O(8))(H(2)O)(2)]·H(2)O}(n), the Zn(II) ion is coordinated by four O atoms from four benzene-1,2,4,5-tetra-carboxyl-ate anions in a distorted tetra-hedral geometry. The Ca(II) ion is eight-coordinated by six O atoms from four benzene-1,2,4,5-tetra-carboxyl-ate anions and by two water mol-ecules in a distorted square-anti-prismatic geometry. The Ca(II) and Zn(II) ions and the lattice water mol-ecule are located on twofold rotation axes; the centroid of the benzene-1,2,4,5-tetra-carboxyl-ate anion is located on a centre of inversion. The ?(8)-bridging mode of the anion results in the formation of a three-dimensional structure with channels extending along [100] in which lattice water mol-ecules are situated. Inter-molecular O-H?O hydrogen bonds involving the coordinating and lattice water mol-ecules as donors and the carboxyl-ate O atoms and lattice water mol-ecules as acceptors are present in the structure.

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

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Diaqua-bis(pyridine-2-carboxyl-ato-κN,O)cobalt(II).

Project description:In the mol-ecule of the title compound, [Co(C(6)H(4)NO(2))(2)(H(2)O)(2)], the coordination environment around the Co(II) atom is distorted octahedral; two N and two O atoms of the pyridine-2-carboxylate ligands lie in the equatorial plane and the two water O atoms in the axial positions. In the crystal structure, inter-molecular O-H⋯O hydrogen bonds link the mol-ecules, forming a supra-moleular network structure.

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Project description:In the title compound, [Co(C(6)H(4)NO(2))(3)], the Co(III) ion lies on a threefold rotation axis and is in a distorted octa-hedral environment defined by three N and three O donor atoms from three fac-disposed pyridine-2-carboxyl-ate ligands. The ligands are coordinated in a chelate fashion, forming three five-membered rings. In the crystal, translationally related complex molecules are organized into columns along [001] via C-H?O hydrogen bonds.

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Project description:In the title compound, [Zn(C(10)H(4)Cl(2)NO(2))(2)(H(2)O)(2)]·H(2)O, the Zn atom has a distorted square-pyramidal geometry comprising two O atoms and one N atom from two distinct 3,7-dichloro-quinoline-8-carboxyl-ate ligands, and two water mol-ecules. The free water mol-ecules are involved in inter-molecular O-H?O hydrogen bonding with the coordinated water mol-ecules and carboxyl-ate O atoms, to give a one-dimensional helical chain along the [100] direction.

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Project description:In the title compound, (C(10)H(10)NO)(2)[Ni(C(7)H(3)NO(4))(2)]·CH(3)OH·H(2)O, the coordination geometry of the Ni(II) atom can be described as distorted octa-hedral. In the crystal, noncovalent inter-actions play an important role in the stabilization of the structure, involving O-H?O, N-H?O and weak C-H?O hydrogen bonds and ?-? stacking inter-actions between the pyridine rings of the pyridine-2,6-dicarboxyl-ate ligands [centroid-centroid distance = 3.7138?(15)?Å] and between the 8-hy-droxy-2-methyl-quinolinium cations [centroid-centroid distances = 3.6737?(15), 3.4434?(14), 3.6743?(15), 3.7541?(16), 3.5020?(15) and 3.7947?(15)?Å].

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