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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

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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).

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

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Bis(4,4'-bipyridinium) di-?-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)(?-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?? 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, ?-? stacking [centroid-centroid distance of 3.4363?(13)?Å] and C-H?? inter-actions, connect the various components into a supra-molecular structure.

| S-EPMC2960308 | 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

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

1,1'-Dimethyl-4,4'-bipyridinium bis-(tetra-fluorido-borate).

Project description:In the title compound, C(12)H(14)N(2) (2+)·2BF(4) (-), the cation has a centre of symmetry at the mid-point of the central C-C bond. ?-? inter-actions, with a shortest atom-to-atom distance of 3.757?(4)?Å, extend the crystal structure into a one-dimensional supra-molecular chain.

| S-EPMC2915310 | biostudies-literature

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