The structure of Ba3W2O9; an example of face-shared octahedra with tungsten (VI)

Kenneth R Poeppelmeier, A. J. Jacobson, J. M. Longo

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The structure of Ba3W2O9 has been determined from powder x-ray diffraction data and found to be the same as in Cs3Tl2Cl9. Two-thirds of the octahedral sites between hexagonal closest-packed BaO3 layers (ABAB...) are filled by the tungsten atoms. The enneaoxo W2O9 6- group represents the first crystal chemistry example of tungsten (VI) in a face-sharing arrangement. Infrared and Raman data are consistent with overall 32 (D3) site symmetry. Crystallographic and spectroscopic evidence supports a covalent bonding model with oxygen pπ → metal dπ stabilization of this tungsten (VI) phase.

Original languageEnglish
Pages (from-to)339-345
Number of pages7
JournalMaterials Research Bulletin
Volume15
Issue number3
DOIs
Publication statusPublished - 1980

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Tungsten
tungsten
Crystal chemistry
Powders
x ray diffraction
Stabilization
Diffraction
stabilization
Metals
chemistry
Oxygen
Infrared radiation
X rays
Atoms
symmetry
oxygen
metals
crystals
atoms

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

The structure of Ba3W2O9; an example of face-shared octahedra with tungsten (VI). / Poeppelmeier, Kenneth R; Jacobson, A. J.; Longo, J. M.

In: Materials Research Bulletin, Vol. 15, No. 3, 1980, p. 339-345.

Research output: Contribution to journalArticle

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