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Catena-Poly[[nickel(II)-μ-1,3-dimethyl-2,6-dioxo-7H-purinato-κN:N] hydroxide].

ABSTRACT: The title complex, {[Ni(C(7)H(7)N(4)O(2))]OH}(n), has been prepared through hydro-thermal synthesis. The asymmetric unit contains one [Ni(TH)](+) cation (TH is the theophylline anion) and one hydroxide anion. The Ni(2+) ion is coordinated by two N atoms from two neighboring theophylline anions. The alternating linkage of the Ni(2+) cation and theophylline anion results in a one-dimensional chain along the [010] direction. Intermolec-ular O-H⋯O hydrogen bonds are present n the crystal structure.

SUBMITTER: Wei LH

PROVIDER: S-EPMC2960965 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Bis(cyanato-κN)tetra-kis-(2,6-dimethyl-pyrazine-κN(4))nickel(II).

Project description:Reaction of nickel(II) chloride with sodium cyanate and 2,6-di-methyl-pyrazine leads to single crystals of the title com-pound, [Ni(NCO)(2)(C(6)H(8)N(2))(4)]. The nickel(II) cation is located about a centre of inversion and is octa-hedrally coordinated by two cyanate anions and four 2,6-dimethyl-pyrazine ligands, forming discrete complexes.

| S-EPMC3393221 | biostudies-literature

Diaqua-bis(8-chloro-1,3-dimethyl-2,6-dioxo-1,2,3,6-tetra-hydro-7H-purinato-?N)copper(II) dihydrate.

Project description:The title mononuclear copper(II) complex, [Cu(C(7)H(6)ClN(4)O(2))(2)(H(2)O)(2)]·2H(2)O, based on 8-chloro-theophylline (HCt), has the Cu atom at a center of symmetry in a slightly distorted trans square-planar geometry coordinated by two N atoms of two deprotonated HCt ligands and two O atoms of water mol-ecules. The crystal packing is stabilized by hydrogen bonds involving deprotonated HCt ligands, coordinated water mol-ecules and uncoordinated solvent water mol-ecules.

| S-EPMC2960592 | biostudies-other

catena-Poly[[triaqua-(pyridine-κN)nickel(II)]-μ-sulfato-κO:O'].

Project description:The title compound, [Ni(SO(4))(C(5)H(5)N)(H(2)O)(3)](n), was synthesized by the hydro-thermal reaction of NiSO(4)·6H(2)O, pyridine and water. The central Ni(II) atom is coordinated in a distorted octa-hedral environment by a pyridine N atom, three aqua O atoms and two O atoms of bridging sulfate anions, yielding a zigzag chain. A three-dimensional network is generated via complex hydrogen bonds involving the sulfate and aqua ligands and a pyridine C-H group.

| S-EPMC2971987 | biostudies-literature

catena-Poly[[dimethyl-bis-(thio-cyanato-κN)tin(IV)]-μ-(4,4'-bipyridine-κN:N')].

Project description:The title dimethyl-tin diisothio-cyanate adduct of 4,4'-bipyridine, [Sn(CH(3))(2)(NCS)(2)(C(10)H(8)N(2))](n), adopts a chain motif in which the N-heterocycle functions as a bridge to adjacent all-trans octa-hedrally coordinated tin atoms. The Sn(IV) atom lies on a special position of 2/m site symmetry, the methyl C atom on a special position of 2 site symmetry, and the thio-cyanate and 4,4'-bipyridine on a special position of m site symmetry.

| S-EPMC3052023 | biostudies-literature

catena-Poly[[dichloridocobalt(II)]-μ-1,3-di-4-pyridylpropane-κN:N'].

Project description:In the title compound, [CoCl(2)(C(13)H(14)N(2))](n), 1,3-bis-(4-pyrid-yl)propane (bpp) ligands bridge four-coordinate Co atoms, generating an extended one-dimensional zigzag chain. Both the Co and two Cl atoms in the tetrahedral coordination polyhedron lie on a mirror plane, while the bbp ligand is bis-ected through the central C atom in the chain by a second mirror plane. There are some π-π stacking inter-ations in the crystal structure, with inter-planar distances of 3.449 Å, which are responsible for the supra-molecular assembly.

| S-EPMC2961947 | biostudies-literature

8-(2-Hy-droxy-phen-yl)-1,3-dimethyl-1H-purine-2,6(3H,7H)-dione.

Project description:The title compound, C(13)H(12)N(4)O(3), is an imidazole derivative featuring an annealed purine ring system. The benzimidazole-inspired moiety is essentially planar (r.m.s. of all fitted non-H atoms = 0.0205 Å). An intra-molecular O-H⋯N hydrogen bond occurs. In the crystal, inter-molecular N-H⋯O and C-H⋯O hydrogen bonds are observed, which connect the mol-ecules into chains along [110]. The shortest centroid-centroid distance between two aromatic systems is 3.7771 (11) Å.

| S-EPMC3200978 | biostudies-literature

catena-Poly[[[aqua-(pyridine-2,6-dicarboxyl-ato N-oxide-κO,O)cobalt(II)]-μ-1,3-di-4-pyridylpropane-κN:N'] dihydrate].

Project description:In the title compound, {[Co(C(7)H(3)NO(5))(C(13)H(14)N(2))(H(2)O)]·2H(2)O}(n), the Co(II) atom is coordinated by two O atoms from a pyridine-2,6-dicarboxyl-ate N-oxide ligand, two N atoms from two 1,3-di-4-pyridylpropane ligands and one water mol-ecule, and displays a distorted square-pyramidal coordination geometry. The 1,3-di-4-pyridylpropane ligands link the Co(II) atoms into an infinite zigzag chain parallel to [010]. The chains are further linked through O-H⋯O and C-H⋯O hydrogen bonds, forming a three-dimensional supra-molecular network.

| S-EPMC2959606 | biostudies-literature

catena-Poly[[bis-(pyridine-κN)nickel(II)]-μ-oxalato-κO,O:O,O].

Project description:The title compound, [Ni(C(2)O(4))(C(5)H(5)N)(2)](n), was synthesized under hydro-(solvo)thermal conditions. The Ni(II) atom, lying on a twofold rotation axis, has an octa-hedral coordination geometry involving two N atoms from two pyridine ligands and four O atoms from two oxalate ligands. The Ni atoms are connected by the tetra-dentate bridging oxalate ligands into a one-dimensional zigzag chain.

| S-EPMC2961960 | biostudies-literature

catena-Poly[[[2,6-bis-(pyrazol-1-yl-κN)pyridine-κN](nitrato-κO,O')cadmium(II)]-μ-thio-cyanato-κN:S].

Project description:In the title crystal structure, [Cd(NCS)(NO(3))(C(11)H(9)N(5))](n), the unique Cd(II) ion is coordinated in a distorted penta-gonal-bipyramidal environment. The axial thio-cyanate ligands act in a μ(1,3)-bridging mode to connect symmetry-related Cd(II) ions into one-dimensional chains along [010]. In addition, there are inter-molecular C-H⋯O contacts between chains.

| S-EPMC2959772 | biostudies-literature

catena-Poly[[(dimethyl-formamide-κO)cobalt(II)]-bis-[μ-(4-nitro-phenyl)-cyanamido]-κN:N;κN:N].

Project description:In the title coordination polymer, [Co(C(7)H(4)N(3)O(2))(2)(C(3)H(7)NO)](n), the Co(II) atom is five-coordinated in a distorted square-pyramidal CoON(4) geometry with the O atom from a dimethyl-formamide mol-ecule in an equatorial position. The bridging phenyl-cyanamide anions generate an infinite chain propagating in [001].

| S-EPMC2983514 | biostudies-literature

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