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Title: Syntheses and structural characterization of vanado-tellurites and vanadyl-selenites: SrVTeO{sub 5}(OH), Cd{sub 2}V{sub 2}Te{sub 2}O{sub 11}, Ca{sub 3}VSe{sub 4}O{sub 13}·H{sub 2}O and Ba{sub 2}VSe{sub 3}O{sub 10}

Abstract

Four new quaternary vanado-tellurites and vanadyl-selenites, namely, SrVTeO{sub 5}(OH)(1), Cd{sub 2}V{sub 2}Te{sub 2}O{sub 11}(2), Ca{sub 3}VSe{sub 4}O{sub 13}·H{sub 2}O(3) and Ba{sub 2}VSe{sub 3}O{sub 10}(4) have been synthesized and structurally characterized by single crystal X-ray diffraction. The oxidation state of vanadium is +5 in tellurites 1 and 2 and +4 in selenites 3 and 4. The structures of SrVTeO{sub 5}(OH)(1) and Cd{sub 2}V{sub 2}Te{sub 2}O{sub 11}(2) compounds consist of (VTeO{sub 5}(OH)){sup 2-} and (V{sub 2}Te{sub 2}O{sub 11}){sup 4-}anionic chains respectively, which are built from tetrahedral VO{sub 4} and disphenoidal TeO{sub 4} moieties. Similarly the structures of Ca{sub 3}VSe{sub 4}O{sub 13}·H{sub 2}O(3) and Ba{sub 2}VSe{sub 3}O{sub 10}(4) respectively contain (VSe{sub 2}O{sub 7}){sup 2-} and (VSe{sub 3}O{sub 10}){sup 4-} anionic chains, which are made up of octahedral VO{sub 6} and pyramidal SeO{sub 3} units. Compounds 1 and 3 have been characterized by thermogravimetric and infrared spectroscopic methods. Compounds 1 and 2 are wide band gap semiconductors. - Graphical abstract: Ca{sub 3}VSe{sub 4}O{sub 13}·H{sub 2}O and Ba{sub 2}VSe{sub 3}O{sub 10} compounds contain (VSe{sub 2}O{sub 7}){sup 2-} and (VSe{sub 3}O{sub 10}){sup 4-} chains. - Highlights: • Four new vanado-tellurites and vanadyl-selenites are synthesized. • Their structural features are different. • The vanado-tellurites are wide bandmore » gap semiconductors.« less

Authors:
;
Publication Date:
OSTI Identifier:
22658258
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 249; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; BARIUM COMPOUNDS; CADMIUM COMPOUNDS; CALCIUM COMPOUNDS; EXPERIMENTAL DATA; SELENITES; SEMICONDUCTOR MATERIALS; STRONTIUM COMPOUNDS; SYNTHESIS; TELLURIUM COMPOUNDS; THERMAL GRAVIMETRIC ANALYSIS; VANADATES; X-RAY DIFFRACTION

Citation Formats

Konatham, Satish, and Vidyasagar, Kanamaluru, E-mail: kvsagar@iitm.ac.in. Syntheses and structural characterization of vanado-tellurites and vanadyl-selenites: SrVTeO{sub 5}(OH), Cd{sub 2}V{sub 2}Te{sub 2}O{sub 11}, Ca{sub 3}VSe{sub 4}O{sub 13}·H{sub 2}O and Ba{sub 2}VSe{sub 3}O{sub 10}. United States: N. p., 2017. Web. doi:10.1016/J.JSSC.2017.02.017.
Konatham, Satish, & Vidyasagar, Kanamaluru, E-mail: kvsagar@iitm.ac.in. Syntheses and structural characterization of vanado-tellurites and vanadyl-selenites: SrVTeO{sub 5}(OH), Cd{sub 2}V{sub 2}Te{sub 2}O{sub 11}, Ca{sub 3}VSe{sub 4}O{sub 13}·H{sub 2}O and Ba{sub 2}VSe{sub 3}O{sub 10}. United States. doi:10.1016/J.JSSC.2017.02.017.
Konatham, Satish, and Vidyasagar, Kanamaluru, E-mail: kvsagar@iitm.ac.in. 2017. "Syntheses and structural characterization of vanado-tellurites and vanadyl-selenites: SrVTeO{sub 5}(OH), Cd{sub 2}V{sub 2}Te{sub 2}O{sub 11}, Ca{sub 3}VSe{sub 4}O{sub 13}·H{sub 2}O and Ba{sub 2}VSe{sub 3}O{sub 10}". United States. doi:10.1016/J.JSSC.2017.02.017.
@article{osti_22658258,
title = {Syntheses and structural characterization of vanado-tellurites and vanadyl-selenites: SrVTeO{sub 5}(OH), Cd{sub 2}V{sub 2}Te{sub 2}O{sub 11}, Ca{sub 3}VSe{sub 4}O{sub 13}·H{sub 2}O and Ba{sub 2}VSe{sub 3}O{sub 10}},
author = {Konatham, Satish and Vidyasagar, Kanamaluru, E-mail: kvsagar@iitm.ac.in},
abstractNote = {Four new quaternary vanado-tellurites and vanadyl-selenites, namely, SrVTeO{sub 5}(OH)(1), Cd{sub 2}V{sub 2}Te{sub 2}O{sub 11}(2), Ca{sub 3}VSe{sub 4}O{sub 13}·H{sub 2}O(3) and Ba{sub 2}VSe{sub 3}O{sub 10}(4) have been synthesized and structurally characterized by single crystal X-ray diffraction. The oxidation state of vanadium is +5 in tellurites 1 and 2 and +4 in selenites 3 and 4. The structures of SrVTeO{sub 5}(OH)(1) and Cd{sub 2}V{sub 2}Te{sub 2}O{sub 11}(2) compounds consist of (VTeO{sub 5}(OH)){sup 2-} and (V{sub 2}Te{sub 2}O{sub 11}){sup 4-}anionic chains respectively, which are built from tetrahedral VO{sub 4} and disphenoidal TeO{sub 4} moieties. Similarly the structures of Ca{sub 3}VSe{sub 4}O{sub 13}·H{sub 2}O(3) and Ba{sub 2}VSe{sub 3}O{sub 10}(4) respectively contain (VSe{sub 2}O{sub 7}){sup 2-} and (VSe{sub 3}O{sub 10}){sup 4-} anionic chains, which are made up of octahedral VO{sub 6} and pyramidal SeO{sub 3} units. Compounds 1 and 3 have been characterized by thermogravimetric and infrared spectroscopic methods. Compounds 1 and 2 are wide band gap semiconductors. - Graphical abstract: Ca{sub 3}VSe{sub 4}O{sub 13}·H{sub 2}O and Ba{sub 2}VSe{sub 3}O{sub 10} compounds contain (VSe{sub 2}O{sub 7}){sup 2-} and (VSe{sub 3}O{sub 10}){sup 4-} chains. - Highlights: • Four new vanado-tellurites and vanadyl-selenites are synthesized. • Their structural features are different. • The vanado-tellurites are wide band gap semiconductors.},
doi = {10.1016/J.JSSC.2017.02.017},
journal = {Journal of Solid State Chemistry},
number = ,
volume = 249,
place = {United States},
year = 2017,
month = 5
}
  • Two isostructural tellurium-rich tellurites, Na{sub 2}WTe{sub 4}O{sub 12} (1) and Na{sub 2}MoTe{sub 4}O{sub 12} (2), have been synthesized and structurally characterized by single-crystal X-ray diffraction studies. Three types of polyhedra, namely, MO{sub 6} octahedra, TeO{sub 3} pyramids, and TeO{sub 5} square-pyramids, constitute the three-dimensional (MTe{sub 4}O{sub 12}){sup 2{minus}} (M = W, Mo) anionic framework, which contains different types of intersecting tunnels, one of them being novel spiral pseudohexagonal tunnels occupied by sodium ions. Both compounds have the monoclinic space group C2/c, with Z = 4. The lattice parameters are as follows: for 1, a = 17.348(3) {angstrom}, b = 5.7755(10)more » {angstrom}, c = 11.269(3) {angstrom}, {beta} = 104.33(2){degree}; for 2, a = 17.341(4) {angstrom}, b = 5.8262(11) {angstrom}, c = 11.268(2) {angstrom}, {beta} = 104.38(2){degree}. Syntheses and structure, powder X-ray diffraction, and infrared spectroscopic studies of these compounds are described.« less
  • The hydrothermal syntheses of Rb{sub 2}(MoO{sub 3}){sub 3}SeO{sub 3}, and Tl{sub 2}(MoO{sub 3}){sub 3}SeO{sub 3} are described. These compounds have structures built up from hexagonal-WO{sub 3}-type sheets and are isostructural with the previously reported Cs{sub 2}(MoO{sub 3}){sub 3}SeO{sub 3} and (NH{sub 4}){sub 2}(MoO{sub 3}){sub 3}SeO{sub 3}. Powder X-ray, thermogravimetric, and spectroscopic data are presented and discussed.
  • A new vanado-molybdate LiMg{sub 3}VMo{sub 2}O{sub 12} has been synthesized, the crystal structure determined an ionic conductivity measured. The solid solution Li{sub 2-z}Mg{sub 2+z}V{sub z}Mo{sub 3-z}O{sub 12} was investigated and the structures of the z=0.5 and 1.0 compositions were refined by Rietveld analysis of powder X-ray (XRD) and powder neutron diffraction (ND) data. The structures were refined in the orthorhombic space group Pnma with a{approx}5.10, b{approx}10.4 and c{approx}17.6 A, and are isostructural with the previously reported double molybdates Li{sub 2}M{sub 2}(MoO{sub 4}){sub 3} (M=M{sup 2+}, z=0). The structures comprise of two unique (Li/Mg)O{sub 6} octahedra, (Li/Mg)O{sub 6} trigonal prisms andmore » two unique (Mo/V)O{sub 4} tetrahedra. A well-defined 1:3 ratio of Li{sup +}:Mg{sup 2+} is observed in octahedral chains for LiMg{sub 3}VMo{sub 2}O{sub 12}. Li{sup +} preferentially occupies trigonal prisms and Mg{sup 2+} favours octahedral sheets. Excess V{sup 5+} adjacent to the octahedral sheets may indicate short-range order. Ionic conductivity measured by impedance spectroscopy (IS) and differential scanning calorimetry (DSC) measurements show the presence of a phase transition, at 500-600 {sup o}C, depending on x. A decrease in activation energy for Li{sup +} ion conductivity occurs at the phase transition and the high temperature structure is a good Li{sup +} ion conductor, with {sigma}=1x10{sup -3}-4x10{sup -2} S cm{sup -1} and E{sub a}=0.6 to 0.8 eV. - Graphical abstract: A new vanado-molybdate LiMg{sub 3}VMo{sub 2}O{sub 12} has been synthesized and the crystal structure determined. Ionic conductivity measurements show the presence of a phase transition, at 500-600 {sup o}C. A large decrease in activation energy for Li{sup +} ion conductivity occurs at the phase transition and the high temperature structure is a good Li{sup +} ion conductor. Display Omitted« less
  • The first organically templated vanadium tellurites, [H{sub 2}en][(VO{sub 2})(TeO{sub 3})]{sub 2}.H{sub 2}O (1, en=ethylenediamine) and [H{sub 2}pip][(VO{sub 2})(TeO{sub 3})]{sub 2} (2, pip=piperazine) have been synthesized by hydrothermal reactions and structurally characterized. Both compounds feature a [(VO{sub 2})(TeO{sub 3})]{sup -} anionic layer containing V{sub 2}Te{sub 2} four-member rings and V{sub 4}Te{sub 4} eight member rings. The vanadium (V) atom is five coordinated by three tellurite oxygens and two terminal oxygen atoms in a distorted trigonal bipyramidal geometry. The interconnection of the VO{sub 5} polyhedra by bridging tellurite groups leads to a 2D corrugated anionic inorganic layer. The doubly protonated template cationsmore » and the lattice water molecules in 1 are located at the interlayer space and are involved in hydrogen bonding. The doubly protonated template cation in 2 is not involved in hydrogen bonding with the anionic inorganic layer.« less