4.1 Article

Refinement of the cation distribution in Nb-Mo double oxide

Journal

JOURNAL OF STRUCTURAL CHEMISTRY
Volume 49, Issue 4, Pages 701-707

Publisher

PLEIADES PUBLISHING INC
DOI: 10.1007/s10947-008-0097-1

Keywords

powder X-ray diffraction; Rietveld refinement; X-ray anomalous scattering; Nb2Mo3O14 structure

Funding

  1. RFBR [07-03-00203]
  2. ICDD [06-03]

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The structure of Nb2Mo3O14 double oxide is refined from powder data using synchrotron radiation and the anomalous scattering effect; space group P (4) over bar2(1)m is found for the material. It is demonstrated that in the tetragonal unit cell with parameters a = 23.173 angstrom, c = 4.0027 angstrom Nb5+ and Mo6+ ions are stochastically distributed in MO6 octahedra and MO7 pentagonal bipyramids of the polygonal network structure of the Mo5O14 type.

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