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Bis(8-hy-droxy-2-methyl-quinolinium) bis-(pyridine-2,6-dicarboxyl-ato)-nickelate(II) methanol monosolvate monohydrate.

ABSTRACT: 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].

SUBMITTER: Aghabozorg H

PROVIDER: S-EPMC3152105 | biostudies-literature | 2011 Jul

REPOSITORIES: biostudies-literature

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Bis(8-hy-droxy-2-methyl-quinolinium) bis-(pyridine-2,6-dicarboxyl-ato)-nickelate(II) methanol monosolvate monohydrate.

Aghabozorg Hossein H Gholizadeh Ahmad A Mirzaei Masoud M Notash Behrouz B Moshki Niloofar N

Acta crystallographica. Section E, Structure reports online 20110611 Pt 7

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 π-π 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-me ...[more]

PMID: 21836882

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Bis(8-hy-droxy-2-methyl-quinolinium) bis-(pyridine-2,6-dicarboxyl-ato)cuprate(II) methanol monosolvate monohydrate.

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

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Project description:The reaction of nickel(II) nitrate hexa-hydrate, propane-1,2-diamine and pyridine-2,6-dicarboxylic acid in a 1:2:2 molar ratio in aqueous solution resulted in the formation of the title compound, (C(3)H(12)N(2))[Ni(C(7)H(3)NO(4))(2)]·4H(2)O or (p-1,2-daH(2))[Ni(pydc)(2)]·4H(2)O (where p-1,2-da is propane-1,2-diamine and pydcH(2) is pyridine-2,6-dicarboxylic acid). The geometry of the resulting NiN(2)O(4) coordination can be described as distorted octa-hedral. Considerable C=O?? stacking inter-actions are observed between the carboxyl-ate C=O groups and the pyridine rings of the (pydc)(2-) fragments, with O?? distances of 3.1563?(12) and 3.2523?(12)?Å and C=O?? angles of 95.14?(8) and 94.64?(8)°. In the crystal structure, a wide range of non-covalent inter-actions, consisting of hydrogen bonding [O-H?O, N-H?O and C-H?O, with D?A distances ranging from 2.712?(2) to 3.484?(2)?Å], ion pairing, ?-? [centroid-to-centroid distance = 3.4825?(8)?Å] and C=O?? stacking, connect the various components to form a supra-molecular structure.

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Project description:The asymmetric unit of the ionic title compound, (C(6)H(7)N(2)O)[Bi(C(7)H(3)NO(4))(2)(H(2)O)(2)]·H(2)O or (acpyH)[Bi(pydc)(2)(H(2)O)(2)]·H(2)O, contains an [Bi(pydc)(2)(H(2)O)(2)](-) anion (where pydcH(2) is pyridine-2,6-dicarb-oxy-lic acid), a protonated 3-(amino-carbon-yl)pyridine as counter-ion, (acpyH)(+), and one uncoordinated water mol-ecule. The anion is an eight-coordinate complex with a square-anti-prismatic geometry around the Bi(III) atom. In the crystal, extensive O-H?O and N-H?O hydrogen bonds, as well as ion pairing, C=O?? inter-actions [O?centroid distance = 3.583?(5)?Å], ?-? stacking [centroid-centroid distance = 3.864?(3)?Å], and C-H?? and C-H?O inter-actions, play an important role in the formation and stabilization of the three-dimensional supra-molecular structure.

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Project description:The title compound, [Cu(2)(C(7)H(3)NO(5))(2)(C(10)H(8)N(2))(H(2)O)(2)], exhibits a centrosymmetric binuclear molecule. Each completely deprotonated 4-hy-droxy-pyridine-2,6-dicarb-oxy-lic acid mol-ecule assumes a tridentate chelating coordination mode. The square-pyramidal coordination geometry around the Cu(II) ion is completed by the bridging bipyridine ligand and an apical water molecule. Adjacent complexes are connected via O-H?O and C-H?O hydrogen bonds to generate a three-dimensional supra-molecular structure.

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Hexaaqua-nickel(II) tetra-aqua-bis-(?-pyridine-2,6-dicarboxyl-ato)bis-(pyridine-2,6-dicarboxyl-ato)trinickelate(II) octa-hydrate.

Project description:The title compound, [Ni(H(2)O)(6)][Ni(3)(C(7)H(3)NO(4))(4)(H(2)O)(4)]·8H(2)O, was obtained by the reaction of nickel(II) nitrate hexa-hydrate with pyridine-2,6-dicarb-oxy-lic acid (pydcH(2)) and 1,10-phenanothroline (phen) in an aqueous solution. The latter ligand is not involved in formation of the title complex. There are three different Ni(II) atoms in the asymmetric unit, two of which are located on inversion centers, and thus the [Ni(H(2)O)(6)](2+) cation and the trinuclear {[Ni(pydc)(2)](2)-?-Ni(H(2)O)(4)}(2-) anion are centrosymmetric. All Ni(II) atoms exhibit an octa-hedral coordination geometry. Various inter-actions, including numerous O-H?O and C-H?O hydrogen bonds and C-O?? stacking of the pyridine and carboxyl-ate groups [3.570?(1), 3.758?(1) and 3.609?(1)?Å], are observed in the crystal structure.

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