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2',6'-Bis(4-carb-oxy-phen-yl)-4,4'-bipyridin-1-ium nitrate 0.25-hydrate.

ABSTRACT: In the title compound, C(24)H(17)N(2)O(4) (+)·NO(3) (-)·0.25H(2)O, the central pyridine ring of the 2',6'-bis-(4-carb-oxy-phen-yl)-4,4'-bipyridin-1-ium cation is almost coplanar with one benzene ring [dihedral angle = 1.03?(5)°], while it makes dihedral angles of 9.59?(5)° with the other benzene ring and 13.66?(6)° with the pyridinium ring. In the crystal, N-H?O and O-H?O hydrogen bonds link the cations and nitrate anions into a sheet in the (302) plane. The crystal structure also exhibits ?-? inter-actions between the central pyridine ring and the benzene rings of neighboring mol-ecules [centroid-centroid distance = 3.6756?(13)?Å].

SUBMITTER: Li Y

PROVIDER: S-EPMC3254403 | biostudies-literature | 2012 Jan

REPOSITORIES: biostudies-literature

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2',6'-Bis(4-carb-oxy-phen-yl)-4,4'-bipyridin-1-ium nitrate 0.25-hydrate.

Li Yaping Y Zang Hu H Su Guanfang G

Acta crystallographica. Section E, Structure reports online 20111207 Pt 1

In the title compound, C(24)H(17)N(2)O(4) (+)·NO(3) (-)·0.25H(2)O, the central pyridine ring of the 2',6'-bis-(4-carb-oxy-phen-yl)-4,4'-bipyridin-1-ium cation is almost coplanar with one benzene ring [dihedral angle = 1.03 (5)°], while it makes dihedral angles of 9.59 (5)° with the other benzene ring and 13.66 (6)° with the pyridinium ring. In the crystal, N-H⋯O and O-H⋯O hydrogen bonds link the cations and nitrate anions into a sheet in the (302) plane. The crystal structure also exhibits π-π i ...[more]

PMID: 22259546

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Tetra-aqua-bis-[1-(3-carb-oxy-phen-yl)-4,4'-bipyridin-1-ium-?N]zinc bis-(4,5-carb-oxy-benzene-1,2-dicarboxyl-ate) 2.5-hydrate.

Project description:In the complex cation of the title compound, [Zn(C(17)H(13)N(2)O(2))(2)(H(2)O)(4)](C(10)H(4)O(8))(2)·2.5H(2)O, the Zn(II) atom, lying on an inversion center, is coordinated by two N atoms from two N-(3-carb-oxy-phen-yl)-4,4'-bipyridin-1-ium ligands and four water mol-ecules in a distorted octa-hedral geometry. The pyromellitate anion is double deprotonated. O-H?O and C-H?O hydrogen bonds connect the cations, anions and uncoordinated water mol-ecules into a three-dimensional supra-molecular network. One of the two lattice water molecules shows an occupancy of 0.25. An intra-molecular O-H?O hydrogen bond is present in the anion.

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Poly[[diaqua-bis-{?-4-[6-(4-carb-oxy-phen-yl)-4,4'-bipyridin-2-yl]benzoato-?(2) O:N (1')}copper(II)] dimethyl-formamide tetra-solvate].

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4-(3-Carb-oxy-phen-yl)pyridinium nitrate.

Project description:In the title salt, C(12)H(10)NO(2) (+)·NO(3) (-), the dihedral angle between the pyridine ring and the benzene ring of the 4-(3-carb-oxy-phen-yl)pyridinium cation is 30.14?(2)°. Inversion-related pairs of cations are linked into dimers by pairs of O-H?O hydrogen bonds. Pairs of dimers are linked by N-H?O and C-H?O hydrogen bonds involving nitrate anions as acceptors, generating supra-molecular chains along the diagonal of the bc plane.

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Project description:In the title compound, C(21)H(14)O(8), the central benzene ring makes dihedral angles of 77.8?(6) and 75.9?(5)° with the outer benzene rings. In the crystal, mol-ecules are linked by O-H?O hydrogen bonds involving carboxyl groups, forming one-dimensional ladders. Two-dimensional layers are formed by inter-penetration of these one-dimensional ladders.

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Bis[?-4-(4-carb-oxy-phen-oxy)phthalato]bis-[triaqua-cobalt(II)].

Project description:The dinuclear title complex, [Co(2)(C(15)H(8)O(7))(2)(H(2)O)(6)], lies across an inversion center. The unique Co(II) ion is coordinated in a slightly distorted octa-hedral coordination geometry by two O atoms from a chelating 4-(carb-oxy-phen-oxy)phthalate ligand, three water O atoms and a further O atom from a bridging carboxyl-ate group of a symmetry-related 4-(carb-oxy-phen-oxy)phthalate ligand. In the crystal, O-H?O hydrogen bonds link the mol-ecules into a three-dimensional network.

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Bis[?-4-(4-carb-oxy-phen-oxy)phthalato]bis-[triaqua-nickel(II)].

Project description:In the centrosymmetric binuclear title compound, [Ni(2)(C(15)H(8)O(7))(2)(H(2)O)(6)], the Ni(II) ion is in a distorted octa-hedral coordination geometry with O(6) donors, three from three water mol-ecules, the others from three carboxylate groups of two ligands. Extensive O-H?O hydrogen bonding connects the mol-ecules into a three-dimensional supra-molecular structure.

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5-Amino-3-carb-oxy-1H-1,2,4-triazol-4-ium nitrate monohydrate.

Project description:The two-dimensional crystal packing of the title compound, C(3)H(5)N(4)O(2) (+)·NO(2) (-)·H(2)O, results from the stacking of well separated layers (i.e. with nothing between the layers) parallel to the (-113) plane in which adjacent cations adopt a head-to-head arrangement such that two -COOH groups are linked via two water mol-ecules (the water O atom behaves simultaneously as donor and acceptor of hydrogen bonds) and two -NH(2) groups are linked through two nitrate anions. This arrangement leads to alternating hydro-philic and hydro-phobic zones in which O-H?O and N-H?O hydrogen bonds, respectively, are observed.

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