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Catena-Poly[[diaqua-nickel(II)]-bis-(μ-2-{[5-(pyridin-4-yl)-1,3,4-oxadiazol-2-yl]sulfan-yl}acetato)].

ABSTRACT: In the title compound, [Ni(C(9)H(6)N(3)O(3)S)(2)(H(2)O)(2)](n), the Ni(II) atom, located on an inversion center, is ligated in an octa-hedral geometry by two carboxyl-ate O atoms from two 2-{[5-(pyridin-4-yl)-1,3,4-oxadiazol-2-yl]sulfan-yl}acetate (L) ligands and two O atoms from water mol-ecules in the equatorial plane, and two pyridine N atoms from other two L ligands at the apical sites. Two L ligands bridge pairs of metal atoms in an anti-parallel manner, forming centrosymmetric dinuclear quasi-recta-ngular units which are linked into infinite double-stranded chains parallel to [100]. O-H⋯O hydrogen bonds between the coordinating water mol-ecules and the carboxyl-ate groups of the L ligand as well as interchain S⋯N inter-actions [2.726 (2)-3.363 (2) Å] lead to the formation of a layer structure parallel to (001).

SUBMITTER: Gao RQ

PROVIDER: S-EPMC3379099 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Tetra-aqua-bis-(2-{[5-(pyridin-4-yl)-1,3,4-oxadiazol-2-yl]sulfan-yl}acetato)-cobalt(II) monohydrate.

Project description:In the title compound, [Co(C(9)H(6)N(3)O(3)S)(2)(H(2)O)(4)]·H(2)O, the two 2-{[5-(pyridin-4-yl)-1,3,4-oxadiazol-2-yl]sulfan-yl}acetate ligands are monodentate. One coordinates the metal atom via the pyridyl N atom whereas the other coordinates via the carboxyl-ate O atom. The Co(II) atom adopts a slightly distorted octa-hedral coordination geometry with four O atoms of the coordinated water mol-ecules located in the equatorial plane and the N and O atoms of the two POA ligands in axial positions. In the crystal, the components are connected through O-H?O and O-H?N hydrogen bonds into a three-dimensional framework.

| S-EPMC3238654 | biostudies-literature

1,4-Bis{[5-(pyridin-4-yl)-1,3,4-oxadiazol-2-yl]sulfan-yl}butane.

Project description:In the centrosymmetric title compound, C(18)H(16)N(6)O(2)S(2), the 1,3,4-oxadiazole and the attached pyridinyl ring are twisted by 5.3?(3)°.

| S-EPMC3052088 | biostudies-literature

Tetra-aqua-bis-(2-{[5-(pyridin-4-yl)-1,3,4-oxadiazol-2-yl]sulfan-yl}acetato)-iron(II).

Project description:In the title compound, [Fe(C(9)H(6)N(3)O(3)S)(2)(H(2)O)(4)] or [Fe(POA)(2)(H(2)O)(4)], the Fe(II) atom is located on an inversion center and is ligated by four O atoms of coordinated water mol-ecules in the equatorial plane while two POA ligands acting as monodentate ligands occupy the axial positions through their pyridyl N atoms, completing a slightly distorted octa-hedral coordination geometry. A three-dimensional supra-molecular network is formed by multiple O-H?O hydrogen-bonding inter-actions between the coordinated water donors and the uncoordinated carboxyl acceptors.

| S-EPMC3201331 | biostudies-other

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Project description:In the distorted W-shaped mol-ecule of the title compound, C(17)H(12)N(6)O(3)S(2), a twofold axis passes through the carbonyl group. The mol-ecules stack in the crystal through ?-? inter-actions [centroid-centroid distance = 3.883?Å] and weak C-H?N hydrogen-bonding inter-actions, forming a three-dimensional architecture.

| S-EPMC3051430 | biostudies-literature

4-[5-(Pyridin-4-yl)-1,3,4-oxadiazol-2-yl]pyridinium benzoate.

Project description:In the title compound, C(12)H(9)N(4)O(+)·C(7)H(5)O(2) (-), ?-? stacking inter-actions [centroid-centroid distance = 3.6275?(14) ?Å] stabilize the crystal structure. The dihedral angles between the central ring and the terminal rings are 3.27?(12) and 10.30?(13)°.

| S-EPMC3051668 | biostudies-literature

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Project description:The bidentate 1,3,4-thia-diazole ligand, namely, 2,5-bis-(2-pyrid-yl)-1,3,4-thia-diazole (denoted L), untested as a polydentate ligand, has been found to form the monomeric title complex, [Ni(C(12)H(8)N(4)S)(2)(H(2)O)(2)](BF(4))(2). The complex shows an octa-hedral environment of the nickel cation in which the Ni(2+) ion is located on a center of symmetry, linked to two ligands and two water molecules. In this 1:2 complex (one metal for two organic ligands) each thia-diazole ligand uses one pyridyl and one thia-diazole N atom for chelate binding. In the second pyridyl substituent, the N atom is oriented towards the same direction as the S atom of the 1,3,4-thiadiazole ring. The mean plane of the thia-diazole and pyridyl rings linked to the nickel cation forms a dihedral angle with the other pyridine ring of 18.63?(8)°. The tetra-fluorido-borate ions can be regarded as free anions in the crystal lattice. Nevertheless, they are involved in an infinite two-dimensional network parallel to ([Formula: see text]01) through O-H?F hydrogen bonds.

| S-EPMC3212138 | biostudies-literature

catena-Poly[[diaqua-[(4-tolyl-sulfan-yl)acetato-?O]cadmium(II)]-?-4,4'-bipyridine-?N:N'].

Project description:The title complex, [Cd(C(9)H(9)O(2)S)(2)(C(10)H(8)N(2))(H(2)O)(2)](n), has a linear chain structure. The central Cd(II) ion is in a slightly disorted octa-hedral environment, coordinated by two aqua ligands, two (4-tolyl-sulfan-yl)acetate ligands and two bridging 4,4'-bipyridine ligands. The Cd(II) ion lies on a twofold rotation axis. Inter-molecular O-H?O hydrogen bonds connect adjacent chains, forming a layer structure. An intramolecular O-H?O hydrogen bond is also present.

| S-EPMC2960514 | biostudies-other

Tetra-aqua-bis-[2-(4-pyridyl-sulfan-yl)acetato-?N]nickel(II).

Project description:In the centrosymmetric title complex, [Ni(C(7)H(6)NO(2)S)(2)(H(2)O)(4)], the Ni(II) atom, located on a centre of inversion, is coordinated by two N atoms from two 2-(4-pyridyl-sulfan-yl)acetate ligands and four water O atoms in an octa-hedral geometry. In the crystal, inter-molecular O-H?O hydrogen bonds between the coordinated water mol-ecules and the carboxyl-ate group of the anionic 2-(4-pyridyl-sulfan-yl)acetate ligands link these discrete mononuclear units into a three-dimensional network.

| S-EPMC3120356 | biostudies-literature

trans-Diaqua-bis-[2-(2-pyrid-yl)acetato-κN,O]nickel(II).

Project description:In the centrosymmetric title complex, [Ni(C(7)H(6)NO(2))(2)(H(2)O)(2)], the Ni(II )atom, located on an inversion center, is six-coordinated in a distorted octa-hedral geometry defined by two N and four O atoms from the two chelating 2-(2-pyrid-yl)acetate ligands and two aqua ligands. The mol-ecules form a three-dimensional framework by O-H⋯O hydrogen bonds and aromatic π-π stacking inter-actions, with a centroid-centroid distance of 3.506 (3) Å.

| S-EPMC3007937 | biostudies-literature

catena-Poly[[diaqua-bis-{?(2)-3,5-bis-[(pyridin-4-yl)methyl-amino]-benzoato}nickel] monohydrate].

Project description:In the title coordination polymer, {[Ni(C(19)H(17)N(4)O(2))(2)(H(2)O)(2)]·H(2)O}(n), the Ni(2+) cation is located on an inversion center and coordinated by two carboxyl-ate O atoms from two different 3,5-bis-(pyridin-4-yl-methyl-amino)-benzoate anions, two O atoms from two coordinated water mol-ecules and two N atoms from two different 3,5-bis-(pyridin-4-yl-methyl-amino)-benzoate anions, displaying a slightly distorted NiN(2)O(4) octa-hedral geometry. Each 3,5-bis-(pyridin-4-yl-methyl-amino)-benzoate anion acts as a ?(2)-bridge, linking different nickel ions into a chain along [010]. In the crystal, adjacent chains are further linked through N-H?O, O-H?O, O-H?N and C-H?O hydrogen bonds into a three-dimensional network. The coordinated water mol-ecules and a disordered water mol-ecule of hydration with 0.50 site occupancy play an important role in the formation of these hydrogen-bonding inter-actions.

| S-EPMC3201333 | biostudies-other

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