The preparation and characterization of Ba3Te2O9; a new oxide structure

A. J. Jacobson; J. C. Scanlon; K. R. Poeppelmeier; J. M. Longo; D. E. Cox

doi:10.1016/0025-5408(81)90001-5

The preparation and characterization of Ba₃Te₂O₉; a new oxide structure

A. J. Jacobson^*, J. C. Scanlon, K. R. Poeppelmeier, J. M. Longo, D. E. Cox

^*Corresponding author for this work

Chemistry

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Abstract

The structure of Ba₃Te₂O₉ has been determined from x-ray powder diffraction data and by profile refinement of neutron diffraction data. We find tellurium octahedrally coordinated as expected and the same face-shared [B₂O₉]^6- unit as observed in Ba₃W₂O₉. The phase Ba₃Te₂O₉ has, however, a Cs₃Fe₂F₉ type structure ( P6₃ mmc, a=5.8603(1) A ̊, c=14.3037(6) A ̊) rather than the Cs₃Tl₂Cl₉ structure (R3c) found for the tungsten analogue. The two oxide structures have the same BaO₃ layer sequence but differ only in the spatial arrangement of the [B₂O₉] groups in the lattice. Infrared and Raman spectra confirm the different site symmetries associated with the different packing of the tungstate and tellurate anions in their respective structures.

Original language	English (US)
Pages (from-to)	359-367
Number of pages	9
Journal	Materials Research Bulletin
Volume	16
Issue number	4
DOIs	https://doi.org/10.1016/0025-5408(81)90001-5
State	Published - Apr 1981

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "The preparation and characterization of Ba3Te2O9; a new oxide structure",

abstract = "The structure of Ba3Te2O9 has been determined from x-ray powder diffraction data and by profile refinement of neutron diffraction data. We find tellurium octahedrally coordinated as expected and the same face-shared [B2O9]6- unit as observed in Ba3W2O9. The phase Ba3Te2O9 has, however, a Cs3Fe2F9 type structure ( P63 mmc, a=5.8603(1) A ̊, c=14.3037(6) A ̊) rather than the Cs3Tl2Cl9 structure (R3c) found for the tungsten analogue. The two oxide structures have the same BaO3 layer sequence but differ only in the spatial arrangement of the [B2O9] groups in the lattice. Infrared and Raman spectra confirm the different site symmetries associated with the different packing of the tungstate and tellurate anions in their respective structures.",

author = "Jacobson, {A. J.} and Scanlon, {J. C.} and Poeppelmeier, {K. R.} and Longo, {J. M.} and Cox, {D. E.}",

note = "Funding Information: The authors express their thanks to A. J. Calvert who carried out some preliminary synthetic work on the tellurate at the Inorganic Chemistry Laboratory, Oxford and to Mr. J. Dunn for all current sample preparations. We also thank Drs. J. Brown and R. Beyerlein for the FTIR and Ramans pectra and Mr. H. Brady for the powder x-ray diffraction data. The work at Brookhaven was supported by the Division of Basic Energy Sciences, U.S. Departmento f Energy, under Contract DE-ACO2-76-CH-O0016.",

year = "1981",

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doi = "10.1016/0025-5408(81)90001-5",

language = "English (US)",

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pages = "359--367",

journal = "Materials Research Bulletin",

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T1 - The preparation and characterization of Ba3Te2O9; a new oxide structure

AU - Jacobson, A. J.

AU - Scanlon, J. C.

AU - Poeppelmeier, K. R.

AU - Longo, J. M.

AU - Cox, D. E.

N1 - Funding Information: The authors express their thanks to A. J. Calvert who carried out some preliminary synthetic work on the tellurate at the Inorganic Chemistry Laboratory, Oxford and to Mr. J. Dunn for all current sample preparations. We also thank Drs. J. Brown and R. Beyerlein for the FTIR and Ramans pectra and Mr. H. Brady for the powder x-ray diffraction data. The work at Brookhaven was supported by the Division of Basic Energy Sciences, U.S. Departmento f Energy, under Contract DE-ACO2-76-CH-O0016.

PY - 1981/4

Y1 - 1981/4

N2 - The structure of Ba3Te2O9 has been determined from x-ray powder diffraction data and by profile refinement of neutron diffraction data. We find tellurium octahedrally coordinated as expected and the same face-shared [B2O9]6- unit as observed in Ba3W2O9. The phase Ba3Te2O9 has, however, a Cs3Fe2F9 type structure ( P63 mmc, a=5.8603(1) A ̊, c=14.3037(6) A ̊) rather than the Cs3Tl2Cl9 structure (R3c) found for the tungsten analogue. The two oxide structures have the same BaO3 layer sequence but differ only in the spatial arrangement of the [B2O9] groups in the lattice. Infrared and Raman spectra confirm the different site symmetries associated with the different packing of the tungstate and tellurate anions in their respective structures.

AB - The structure of Ba3Te2O9 has been determined from x-ray powder diffraction data and by profile refinement of neutron diffraction data. We find tellurium octahedrally coordinated as expected and the same face-shared [B2O9]6- unit as observed in Ba3W2O9. The phase Ba3Te2O9 has, however, a Cs3Fe2F9 type structure ( P63 mmc, a=5.8603(1) A ̊, c=14.3037(6) A ̊) rather than the Cs3Tl2Cl9 structure (R3c) found for the tungsten analogue. The two oxide structures have the same BaO3 layer sequence but differ only in the spatial arrangement of the [B2O9] groups in the lattice. Infrared and Raman spectra confirm the different site symmetries associated with the different packing of the tungstate and tellurate anions in their respective structures.

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The preparation and characterization of Ba₃Te₂O₉; a new oxide structure

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