Browse
Submit Data
Databases
API
Help

Dataset Information

24 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Crystal structure of penta-potassium di-hydrogen nona-vanadato(V)platinate(IV) nona-hydrate.

ABSTRACT: The title compound, K5[H2PtV9O28]·9H2O, containing the nona-vanado-platinate(IV) polyanion, was obtained by hydro-thermal reaction at pH = 4.2. The polyanion has approximate mm2 (C 2v ) symmetry. The two platinum-bound ?2-O atoms are protonated in the polyanion. The heteropolyanions form inversion-generated dimers, {[H2PtV9O28]2}(10-), held together by ?2-O-H??2-O and ?2-O-H??3-O hydrogen bonds. All K(+) cations are located on general positions of the space group P-1.

SUBMITTER: Joo HC

PROVIDER: S-EPMC4459313 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Similar Datasets

Anhydrous penta-guanidinium dihydrogen nona-vanado(IV)platinate(IV).

Project description:The title compound, (CH(6)N(3))(5)[H(2)PtV(9)O(28)], containing the nona-vanadoplatinate(IV) polyanion, was obtained by hydro-thermal reaction. The polyanion has approximate C(2v) symmetry. The two Pt-bound ?(2)-O atoms are protonated in the polyanion. The heteropolyanions form inversion-generated dimers, {[H(2)PtV(9)O(28)](2)}(10-), held together by each of the two ?(2)-O-H??(2)-O and ?(2)-O-H??(3)-O hydrogen bonds. The guanidinium cations are hydrogen bonded with the ?(2)- and terminal O atoms of the polyanion, connecting the polyanions into a three-dimensional network.

| S-EPMC3238708 | 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

Crystal structure of hepta-guanidinium nona-hydrogen bis-[α-hexa-molybdoplatinate(IV)] hepta-hydrate.

Project description:The title compound, (CH6N3)7H9[PtMo6O24]2·7H2O, containing the well-known Anderson-type heteropolyoxomolybdate, was obtained by recrystallization of its powdered guanidinium salt. The protonated O atoms in the polyanion were confirmed by electron-density maps, inter-polyanion hydrogen bonds and bond-valance sums (BVS). The {[H4.5PtMo6O24]2}(7-) polyanion is the same as that already characterized in K7[H4.5PtMo6O24]2·11H2O [space group P-1; Lee & Joo (2010 ▶). Acta Cryst. E66, i8-i9]. The heteropolyanions form inversion-generated dimers, {[H4.5PtMo6O24]2}(7-), held together by each of the four μ3-O-H⋯μ1-O, two μ2-O-H⋯μ2-O hydrogen bonds and one centrosymmetric μ3-O-H-μ3-O hydrogen bond. The H atom of the centrosymmetric hydrogen bond is located on an inversion centre. One guanidinium ion and one water mol-ecule are equally disordered about a twofold rotation axis.

| S-EPMC4350731 | biostudies-literature

Redetermination of hepta-potassium nona-hydrogen bis-[?-hexa-molybdoplatinate(IV)] undeca-hydrate.

Project description:Previously reported at a temperature of 298?(2)?K [Lee & Joo (2007 ?). Acta Cryst. E63, i11-i13], the title compound, K(7)[H(9)?-Pt(2)Mo(12)O(48)]·11H(2)O or K(7)[H(4.5)?-PtMo(6)O(24)](2)·11H(2)O, was redetermined at 146?(2)?K in order to determine whether the H atom in the hydrogen bond that crosses the center of symmetry was located at the center of symmetry or disordered around it as assumed in the previous study. During the present low-temperature study it was found on the center of symmetry. One water molecule shows half-occupancy.

| S-EPMC2984051 | biostudies-literature

Double salt crystal structure of hexa-sodium hemiundeca-hydrogen α-hexa-molybdoplatinate(IV) heminona-hydrogen α-hexa-molybdoplatinate(IV) nona-cosa-hydrate: di-hydrogen disordered-mixture double salt.

Project description:The title double salt containing two distinct, differently protonated hexa-molybdoplatinate(IV) polyanions, Na6[H5.5 α-PtMo6O24][H4.5 α-PtMo6O24]·29H2O, has been synthesized by a hydro-thermal reaction at ca pH 1.80. The positions of the H atoms in the polyanions were established from difference Fourier maps and confirmed by the inter-polyanion hydrogen bonds, bond-distance elongation, and bond-valence sum (BVS) calculations. The fractional numbers of H atoms in each polyanion are required for charge balance and in order to avoid unrealistically short H⋯H distances in the inter-polyanion hydrogen bonds. Considering the disorder, the refined formula of the title polyanion, {[H5.5 α-PtMo6O24]; polyanion (A) and [H4.5 α-PtMo6O24]; polyanion (B)}(6-), can be rewritten as a set of real formula, viz. {[H6 α-PtMo6O24]; polyanion (A). [H4 α-PtMo6O24]; polyanion (B)}(6-) and {[H5 α-PtMo6O24]; polyanion (A). [H5 α-PtMo6O24]; polyanion (B)}(6-). The polyanion pairs both form dimers of the same formula, viz. {[H10 α-Pt2Mo12O48]}(6-) connected by seven inter-polyanion O-H⋯O hydrogen bonds.

| S-EPMC4647359 | biostudies-literature

Double salt crystal structure of nona-sodium dihydrogen nona-vanadoplatinate(IV) tri-hydrogen nona-vanadoplatinate(IV) tetra-contahydrate: stepwise-protonated nona-vanadoplatinate(IV).

Project description:Nonavanadoplatinate [Pt(IV)V9O28](7-), which is the first heteropolyoxovanadate in the deca-vanadate framework, [V10O28](6-), has been investigated crystallographically. The title compound, Na9[H2Pt(IV)V9O28][H3Pt(IV)V9O28]·40H2O, was obtained by a hydro-thermal reaction at pH = 2. This compound contains two different protonated heteropolyoxovanadates, [H2Pt(IV)V9O28](5-) [polyanion (A)] and [H3Pt(IV)V9O28](7-) [polyanion (B)]. The locations of the H atoms on the protonated O atoms were observed in difference Fourier maps and confirmed by the inter-polyanion hydrogen bonds, bond-length elongation and bond-valence-sum (VBS) analysis. The two (Pt and V)-bound μ2-O atoms are protonated in both polyanions. The position of the third protonated O atom in polyanion (B) is an inter-esting feature of the structure, being located on one (V2)-bound μ2-O atom. The discrete heteropolyanions form a dimer, {H5[PtV9O28]2}(9-), through five inter-polyanion hydrogen bonds. Additional O-H⋯O hydrogen bonds and interactions between Na(+) cations and water molecules as well as terminal O atoms of one of the polyanions consolidate the crystal packing.

| S-EPMC4518920 | biostudies-literature

Crystal structure of iron(III) perchlorate nona-hydrate.

Project description:Since the discovery of perchlorate salts on Mars and the known occurrence of ferric salts in the regolith, there is a distinct possibility that the title compound could form on the surface of Mars. [Fe(H2O)6](ClO4)3·3H2O was crystallized from aqueous solutions at low temperatures according to the solid-liquid phase diagram. It consists of Fe(H2O)6 octa-hedra (point group symmetry -3.) and perchlorate anions (point group symmetry .2) as well as non-coordinating water mol-ecules, as part of a second hydrogen-bonded coordination sphere around the cation. The perchlorate appears to be slightly disordered, with major-minor component occupancies of 0.773?(9):0.227?(9).

| S-EPMC4257414 | biostudies-literature

Crystal structure of di-n-but-yl-bis-(? (5)-penta-methyl-cyclo-penta-dien-yl)hafnium(IV).

Project description:The crystal structure of the title compound, [Hf(C10H15)2(C4H9)2], reveals two independent mol-ecules in the asymmetric unit. The diffraction experiment was performed with a racemically twinned crystal showing a 0.529?(5):0.471?(5) component ratio. Each Hf(IV) atom is coordinated by two penta-methyl-cyclo-penta-dienyl and two n-butyl ligands in a distorted tetra-hedral geometry, with the cyclo-penta-dienyl rings inclined to one another by 45.11?(15) and 45.37?(16)°. In contrast to the isostructural di(n-butyl)bis(? (5)-penta-methyl-cyclo-penta-dien-yl)zirconium(IV) complex with a noticeable difference in the Zr-butyl bonding, the Hf-Cbut-yl bond lengths differ from each other by no more than 0.039?(3)?Å.

| S-EPMC4384584 | biostudies-literature

Crystal structure of bis-(ammonium) bis-[penta-aqua-(di-methyl-formamide)-zinc(II)] deca-vanadate tetra-hydrate.

Project description:The crystalline product (NH4)2[Zn(C3H7NO)(H2O)5]2[V10O28]·4H2O was success-fully isolated from an H2O/DMF solvent combination by evaporation at ambient temperature. The salt crystallizes in the P21/n space group. Imidazole, initially used in the synthesis but not present in the product, and DMF solvent appear to affect the synthesis and crystallization as structural-directing agents. In the title compound, the complex cation [Zn(H2O)5(DMF)]2+ acts as a counter-ion without being directly coordinated to the deca-vanadate anion. An extensive framework of hydrogen bonds integrates the whole architecture as evidenced by X-ray crystallography. The polyoxometalate [V10O28]6- lies on a center of symmetry while the complex cation [Zn(H2O)5(DMF)]2+ links three adjacent anions through a set of 2 + 2 + 3 hydrogen bonds.

| S-EPMC9069511 | biostudies-literature

Crystal structure of bis-(η(5)-cyclo-penta-dien-yl)(2,3-di-ethyl-butane-1,4-di-yl)hafnium(IV).

Project description:The title compound, [Hf(C5H5)2(C8H16)], proves a structural motif of hafna-cyclo-pentane besides the coordination of two cyclo-penta-dienyl ligands in an η(5)-fashion. The hafna-cyclo-pentane ring has a twist conformation and is substituted by two ethyl groups in the β,β'-positions, which are trans orientated to each other. One cyclo-penta-dienyl ring and one ethyl group are each disordered over two positions with site-occupancy ratios of 0.679 (15):0.321 (15) and 0.702 (18):0.298 (18), respectively.

| S-EPMC4331853 | biostudies-literature

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data