A new compound with a non-centrosymmetric structure, potassium tetra-kis-[dioxomolybdenum(IV)] arsenate trioxide, K(MoO2)4O3(AsO4), has been synthesized by a solid-state reaction. The [(MoO2)4O3(AsO4)](+) three-dimensional framework consists of single arsenate AsO4 tetra-hedra, MoO6 octa-hedra, MoO5 bipyramids and bi-octa-hedral units of edge-sharing Mo2O10 octa-hedra. The [Mo2O8]∞ octa-hedral chains running along the a-axis direction are connected through their corners to the AsO4 tetra-hedra, MoO6 octa-hedra and MoO5 bipyramids, so as to form large tunnels propagating along the a axis in which the K(+) cations are located. This structure is compared with compounds containing M 2O10 (M = Mo, V, Fe) dimers and with those containing M 2O8 (M = V) chains.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3684866 | PMC |
| http://dx.doi.org/10.1107/S1600536813013664 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Synthesis and crystal structure of (NH)[Ni(HAsO)(AsO)(OH)].
Acta Crystallogr E Crystallogr Commun
April 2024
TU Wien, Institute for Chemical Technologies and Analytics, Division of Structural Chemistry, Getreidemarkt 9/E164-05-1, 1060 Vienna, Austria.
The title compound, ammonium trinickel(II) hydrogen arsenate arsenate di-hydroxide, was synthesized under hydro-thermal conditions. Its crystal structure is isotypic with that of K[Cu(HAsO)(AsO)(OH)] and is characterized by pseudo-hexa-gonal (001) [NiAsO(OH)O(OH)] layers formed from vertex- and edge-sharing [NiO(OH)] octa-hedra and [AsO(OH)] tetra-hedra as the building units. The hydrogen atom of the OH group shows occupational disorder and was refined with a site occupation factor of 1/2, indicating the equal presence of [HAsO] and [AsO] groups.
View Article and Find Full Text PDFFlux syntheses and single-crystal structures of CsNa (AsO) ( = Zr, Hf).
Acta Crystallogr E Crystallogr Commun
July 2022
Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, Scotland.
The isostructural compounds caesium deca-sodium tetra-zirconium nona-arsenate, CsNaZr(AsO), and caesium deca-sodium tetra-hafnium nona-arsenate, CsNaHf(AsO), arose as unexpected single-crystal products from the reactions of NaCO, MO ( = Zr, Hf) and AsO in a eutectic flux of NaCl and CsCl. They consist of O octa-hedra and AsO tetra-hedra sharing vertices to generate three-dimensional polyhedral networks encapsulating the caesium and sodium ions. The MO groups share all their vertices with adjacent As atoms but the As atoms have one or two 'terminal' O atoms not bonded to Zr or Hf.
View Article and Find Full Text PDFCrystal structure of BaMn(AsO) containing discrete [MnO] units.
Acta Crystallogr E Crystallogr Commun
December 2017
Division of Science, Mathematics and Technology, Governors State University, 1 University Parkway, University Park, IL 60484-0975, USA.
In our attempt to search for mixed alkaline-earth and transition metal arsenates, the title compound, barium dimanganese(II) bis-(arsenate), has been synthesized by employing a high-temperature RbCl flux. The crystal structure of BaMn(AsO) is made up of MnO octa-hedra and AsO tetra-hedra assembled by sharing corners and edges into infinite slabs with composition [Mn(AsO)] that extend parallel to the plane. The barium cations reside between parallel slabs maintaining the inter-slab connectivity through coordination to eight oxygen anions.
View Article and Find Full Text PDFNew , -arsenates - the framework structures of Ag(HAsO) ( = Al, Ga) and GaAsO ( = Na, Ag).
Acta Crystallogr E Crystallogr Commun
May 2017
Naturhistorisches Museum Wien, Burgring 7, 1010 Wien, Austria.
The crystal structures of hydro-thermally synthesized silver(I) aluminium bis-[hydrogen arsenate(V)], AgAl(HAsO), silver(I) gallium bis-[hydrogen arsenate(V)], AgGa(HAsO), silver gallium diarsenate(V), AgGaAsO, and sodium gallium diarsenate(V), NaGaAsO, were determined from single-crystal X-ray diffraction data collected at room temperature. The first two compounds are representatives of the MCV-3 structure type known for KSc(HAsO), which is characterized by a three-dimensional anionic framework of corner-sharing alternating O octa-hedra ( = Al, Ga) and singly protonated AsO tetra-hedra. Inter-secting channels parallel to [101] and [110] host the Ag cations, which are positionally disordered in the Ga compound, but not in the Al compound.
View Article and Find Full Text PDFSynthesis and crystal structure of Na4Ni7(AsO4)6.
Acta Crystallogr E Crystallogr Commun
May 2016
Laboratoire de Réactivité et Chimie des Solides, Université de Picardie Jules Verne, CNRS UMR 7314, 33 rue Saint Leu, 80039 Amiens, France.
The title compound, tetra-sodium hepta-nickel hexa-arsenate, was obtained by ceramic synthesis and crystallizes in the monoclinic space group C2/m. The asymmetric unit contains seven Ni atoms of which two have site symmetry 2/m and three site symmetry 2, four As atoms of which two have site symmetry m and two site symmetry 2, three Na atoms of which two have site symmetry 2, and fifteen O atoms of which four have site symmetry m. The structure of Na4Ni7(AsO4)6 is made of layers of Ni octa-hedra and As tetra-hedra assembled in sheets parallel to the bc plane.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!