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Bis(4,4'-bipyridinium) dodeca-tungsto-silicate 4,4'-bipyridine hexa-hydrate.

ABSTRACT: The title compound, (C(10)H(10)N(2))(2)[SiW(12)O(40)]·C(10)H(8)N(2)·6H(2)O or (4,4'-bipyH(2))(2)[SiW(12)O(40)].(4,4'-bipy)·6H(2)O (4,4'-bipy is 4,4'-bipyridine), was prepared under hydro-thermal conditions. The asymmetric unit contains a discrete Keggin-type [SiW(12)O(40)](4-) anion (located on a twofold axis), one 4,4'-bipy (located on a twofold axis), two (4,4'-bipyH(2))(2+) cations and six uncoordinated water mol-ecules. The polyoxoanion is constructed from a central SiO(4) tetra-hedron which shares its O atoms with four trinuclear W(3)O(13) groups, each of which is made up of three edge-sharing WO(6) octa-hedra. The water mol-ecules and [SiW(12)O(40)](4-) anions are linked through hydrogen bonds.

SUBMITTER: Ma FX

PROVIDER: S-EPMC2959252 | biostudies-literature | 2008 Sep

REPOSITORIES: biostudies-literature

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Bis(4,4'-bipyridinium) dodeca-tungsto-silicate 4,4'-bipyridine hexa-hydrate.

Ma Feng-Xia FX Zhao Quan Q

Acta crystallographica. Section E, Structure reports online 20080906 Pt 10

The title compound, (C(10)H(10)N(2))(2)[SiW(12)O(40)]·C(10)H(8)N(2)·6H(2)O or (4,4'-bipyH(2))(2)[SiW(12)O(40)].(4,4'-bipy)·6H(2)O (4,4'-bipy is 4,4'-bipyridine), was prepared under hydro-thermal conditions. The asymmetric unit contains a discrete Keggin-type [SiW(12)O(40)](4-) anion (located on a twofold axis), one 4,4'-bipy (located on a twofold axis), two (4,4'-bipyH(2))(2+) cations and six uncoordinated water mol-ecules. The polyoxoanion is constructed from a central SiO(4) tetra-hedron which ...[more]

PMID: 21200985

Similar Datasets

Hemi(4,4'-bipyridinium) hexa-fluorido-phosphate bis-(4-amino-benzoic acid) 4,4'-bipyridine monohydrate.

Project description:In the title compound, 0.5C(10)H(10)N(2) (2+)·PF(6) (-)·C(10)H(8)N(2)·2C(7)H(7)NO(2)·H(2)O, the cation is located on a center of symmetry. The crystal structure is determined by a complex three-dimensional network of inter-molecular O-H?O, O-H?N, N-H?N and N-H?F hydrogen bonds. ?-? stacking inter-actions between neighboring pyridyl rings are also present; the centroid-centroid distance is 3.643?(5)?Å. The hexa-fluoridophosphate anion is disordered over two positions with site-occupancy factors of ca 0.6 and 0.4.

| S-EPMC2968380 | biostudies-literature

4,4'-Bipyridinium bis(perchlorate)-4-aminobenzoic acid-4,4'-bipyridine-water (1/4/2/2).

Project description:In the structure of the title compound, C(10)H(10)N(2) (2+)·2ClO(4) (-)·4C(7)H(7)NO(2)·2C(10)H(8)N(2)·2H(2)O, the 4,4'-bipyridinium cation has a crystallographically imposed centre of symmetry. The cation is linked by N-H?N hydrogen bonds to adjacent 4,4'-bipyridine mol-ecules, which in turn inter-act via O-H?N hydrogen bonds with 4-amino-benzoic acid mol-ecules, forming chains running parallel to [30]. The chains are further connected into a three-dimensional network by N-H?O and O-H?O hydrogen-bonding inter-actions involving the perchlorate anion, the water mol-ecules and the 4-amino-benzoic acid mol-ecules. In addition, ?-? stacking inter-actions with centroid-centroid distances ranging from 3.663?(6) to 3.695?(6)?Å are present. The O atoms of the perchlorate anion are disordered over two sets of positions, with refined site occupancies of 0.724?(9) and 0.276?(9).

| S-EPMC2968051 | biostudies-literature

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Project description:The crystal structure of the title compound, (C(10)H(9)N(2))(2)[Mn(2)(C(10)H(8)N(2))(3)(H(2)O)(8)](C(8)H(3)O(7)S)(2)·C(10)H(8)N(2)·15H(2)O, consists of dinuclear Mn(II) complex cations, sulfonato-benzene-dicarboxyl-ate trianions, 4-(4-pyridyl)pyridinium cations, uncoordin-ated 4,4'-bipyridine and uncoordinated water mol-ecules. One 4,4'-bipyridine mol-ecule bridges two Mn atoms, forming a centrosymmetric dinuclear complex; the mid-point of the C-C bond linking the pyridine rings of the bridging ligand is located on an inversion center. Each Mn(II) atom is coordinated by four water and two 4,4'-bipyridine mol-ecules in a distorted octa-hedral geometry. The Mn(II) atom deviates by 0.591?(5) and 0.209?(2)?Å from the mean planes of the coordinated pyridine rings. In the 4-(4-pyridyl)pyridinium cation, the two pyridine rings are twisted with respect to each other, making dihedral angle of 34.78?(17)°. The uncoordinated bipyridine mol-ecule is also centrosymmetric. One of uncoordinated water mol-ecules has site symmetry 2, and the other uncoordinated water mol-ecule is located close to an inversion center and its one H atom is disordered equally over two sites. Extensive ?-? stacking between pyridine rings is observed and an extensive hydrogen-bonding network of the types N-H?N, O-H?N and O-H?O is present.

| S-EPMC2977419 | biostudies-literature

Tris[hexa-amminecobalt(III)] bis-[tri-oxalato-cobaltate(II)] chloride dodeca-hydrate.

Project description:The title compound, [Co(III)(NH?)?]?[Co(II)(C?O?)?]?Cl·12H?O, was synthesized under hydro-thermal conditions. The asymmetric unit comprises two [Co(NH?)?]³? cations, one located on a threefold axis and the other on a site of symmetry -3, a [Co(C?O?)?]?? anion, located on a threefold axis, one sixth of a chloride anion [disordered over two sites, one threefold (site occupancy = 0.5) and the other -3 (site occupancy (0.25)] and two water molecules. Both Co(III) centers are six-coordinated by NH? mol-ecules, forming [Co(NH?)?]³? octa-hedra, with Co-N distances in the range 1.958?(2)-1.977?(3)?Å. The title structure gives the first example of the [Co(C?O?)?]?? anion, with the distorted octa-hedral environment of Co(II) center formed by six O atoms from three oxalate residues. The Co-O bond lengths are 2.0817?(18) to 2.0979?(18)?Å. Multiple N-H?O, N-H?Cl and O-H?O hydrogen bonds link the cations, anions and water mol-ecules into a three-dimensional network.

| S-EPMC3393183 | biostudies-literature

?-Succinato-?O:O-bis[(2,2'-bipyridine-?N,N')copper(II)] succinate dodeca-hydrate.

Project description:In the title compound, [Cu(2)(C(4)H(4)O(4))(C(10)H(8)N(2))(4)]C(4)H(4)O(4)·12H(2)O, C(10)H(8)N(2)), the centrosymmetic dinuclear cations, succinate anions and water mol-ecules are hydrogen bonded into layers parallel to (010). The Cu atom is square-pyramidally coordinated by one atom of the succinato ligand and four N atoms of two 2,2'-bipyridine ligands. The 12 water mol-ecules form a new type of water cluster.

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1,1'-Dimethyl-4,4'-bipyridinium bis-(triiodide).

Project description:In the title compound, C(12)H(14)N(2) (2+)·2I(3) (-), the 1,1'-dimethyl-4,4'-bipyridinium (DMBP) dication is charge balanced by two triiodide ions. The DMBP dication is planar within 0.010 (5) Å. The asymmetric unit contains only half of the dication, the other half being generated by an inversion center. Weak C-H⋯I inter-actions link the ions into sheets parallel to (121).

| S-EPMC2977828 | biostudies-literature

catena-Poly[4,4'-bipyridinium [[diaqua-disulfatocadmium(II)]-?-4,4'-bipyridine-?N:N'] dihydrate].

Project description:The title compound, {(C(10)H(10)N(2))[Cd(SO(4))(2)(C(10)H(8)N(2))(H(2)O)(2)]·2H(2)O}(n), consists of anionic chains of the Cd complex, diprotonated 4,4'-bipyridinium cations and uncoordinated water mol-ecules. In the anionic chain, the Cd atom lies on a center of inversion in an octa-hedral geometry. The midpoint of the coordinated bipyridine also resides on a center of inversion, as does the non-coordinated bipyridinium counterion. O-H?O and N-H?O hydrogen bonding inter-actions and ?-? stacking inter-actions in the structure are responsible for the supra-molecular assembly.

| S-EPMC2980147 | biostudies-literature

Bis(4,4'-bipyridinium) di-μ-hydroxido-bis-[dihydroxido(pyridine-2,6-dicarboxyl-ato)anti-monate(III,V)] octa-hydrate.

Project description:The reaction of anti-mony(III) chloride, 4,4'-bipyridine (4,4'-bipy) and pyridine-2,6-dicarboxylic acid (pydcH(2)), in a 1:2:2 molar ratio in an aqueous solution, resulted in the formation of the title centrosymmetric disordered mixed-valence Sb(III)/Sb(V) compound, (C(10)H(9)N(2))(2)[Sb(2)(C(7)H(3)NO(4))(2)(OH)(6)]·8H(2)O or (4,4'-bipyH)(2)[Sb(pydc)(OH)(2)(μ-OH)](2)·8H(2)O. The seven donor atoms of the (pydc)(2-) groups and the hydroxido ligands form a distorted penta-gonal-bipyramidal arrangement around the Sb(III)/Sb(V) centers. C-H⋯π stacking inter-actions between CH groups of the complex dianion and the aromatic rings of the (4,4'-bipyH)(+) cations, with a distance of 2.89 Å, are observed. In the crystal structure, a wide range of noncovalent inter-actions, consisting of O-H⋯O, N-H⋯O and C-H⋯O hydrogen bonds [D⋯A ranging from 2.722 (2) to 3.137 (3) Å], ion pairing, π-π stacking [centroid-centroid distance of 3.4363 (13) Å] and C-H⋯π inter-actions, connect the various components into a supra-molecular structure.

| S-EPMC2960308 | biostudies-literature

Poly[[bis-(?-4,4'-bipyridine-?(2)N:N')copper(I)] perchlorate 0.24-hydrate].

Project description:The title copper(I) polymeric compound, {[Cu(C(10)H(8)N(2))(2)]ClO(4)·0.24H(2)O}(n), obtained by the reaction of Cu(ClO(4))(2) and 4,4'-bipyridine (4,4'-bpy) under hydro-thermal conditions, features a fourfold-inter-penetrated diamondoid coordination framework. The asymmetric unit consists of two Cu(I) atoms, three 4,4'-bpy ligands in general positions and two halves of two centrosymmetric 4,4'-bpy ligands, two ClO(4) (-) anions and water mol-ecule with a site-occupancy factor of 0.480?(17). The Cu(I) atoms are in a distorted tetra-hedral coordination environment and are bridged by 4,4'-bpy ligands, forming a diamondoid cationic polymeric framework that encloses two symmetry-independent channels along [100], which accommodate perchlorate anions and water mol-ecules.

| S-EPMC3344380 | biostudies-literature

Crystal structure of undeca-potassium bis-[α-hemi-penta-hydrogen hexa-molybdoplatinate(IV)] dodeca-hydrate.

Project description:The title compound, K11[α-Pt(μ3-OH)2(μ3-OH0.5)Mo6(μ3-O)3(μ2-O)6O12]2·12H2O (simplified chemical formula K11[H2.5PtMo6O24]2·12H2O), containing the well-known Anderson-type heteropolyoxomolybdate anion, was obtained by hydro-thermal reaction at pH = ca 6.0. The complete polyanion dimer has 2/m symmetry. The locations of the H atoms with respect to protonated O atoms were obtained from difference Fourier maps, and confirmed by the inter-polyanion hydrogen bonds, bond-length elongation and bond-valence sums (BVSs). The title heteropolyanion has two types of protonated O atoms viz. μ3-OH, {Mo2-O(H)-Pt} and μ3-OH0.5 (disordered H atom). The [H2.5α-PtMo6O24](5.5-) polyanion forms a dimer, [(H2.5α-PtMo6O24)2](11-), held together by two pairs of μ3-O-H⋯μ1-O and of one disordered μ3-O⋯H⋯μ3-O hydrogen bonds. Three K(+) ions are located on special positions (two on twofold rotation axes, one on a mirror plane), and two K(+) ions are located on general positions with a reduced occupancy of 0.5. The remaining K(+) ion has a reduced occupancy of 0.25 for charge balance and reasonable displacement parameters. As a result, the numbers of K(+) and H(+) ions in the title compound are 5.5 and 2.5, respectively.

| S-EPMC4571373 | biostudies-literature

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