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The crystal structure of β-NbPO5

Published/Copyright: August 25, 2010
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Zeitschrift für Kristallographie - Crystalline Materials
From the journal Zeitschrift für Kristallographie - Crystalline Materials Volume 177 Issue 3-4

Abstract

The crystal structure of β-NbPO5 has been solved by threedimensional single crystal X-ray analysis. The refinement in the cell of symmetry P21/c with a = 13.0969(16) Å, b = 5.2799(6) Å, c = 13.2281(16) Å, β = 120.334(8)°, Z = 8, has led to R = 0.035 and Rw = 0.042 for 2888 reflections with σ(I)/I ≤ 0.333. The structure belongs to the structural family P4O8(WO3)2m called monophosphate tungsten bronzes with pentagonal tunnels (MPTBP) and characterized by ReO3-type slabs of various widths connected through single PO4 tetrahedra. β-NbPO5 and the isostructural compound β-TaPO5 can thus be considered as the members m = 2 of the series and their framework described as built up of strands of two MO6 (M = Nb, Ta) octahedra. Adjustment stresses induced by PO4 tetrahedra lead to different octahedral deformations which explain the numerous supercells observed by electron diffraction.

Published Online: 2010-8-25
Published in Print: 1986-2-1

© 2015 Oldenbourg Wissenschaftsverlag GmbH, Rosenheimer Str. 145, 81671 München

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  1. The thermal expansion of Na2CO3
  2. Crystal structure of a beryllium-potassium polyphosphate: BeK(PO3)3
  3. 4-Amino-2-bromo-6-methyl-5,6,7,8-tetrahydropyrido[2,3-d]-pyrimidine
  4. An X-ray analysis of anomalous dispersion effects, anharmonicity and thermal vibrations in gallium phosphide
  5. An empirical model of optical susceptibilities of crystals I. Refractivity in alkali halides
  6. An empirical model of optical susceptibilities of crystals II. Elasto-optical effect in alkali halides
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  8. Crystal and molecular structure of α-naphthil
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  10. Ancient oriental pattern and related zeolite type networks
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  16. Structure of 2,7-dihydro-3,5,8-trimethylazuleno (6-5-b) furan-2,7-dione
  17. Die isotypen Phasen HEF6 · 5H2O · HF (E = P, As, Sb): Neubestimmung der Strukturen an Einkristallen1
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https://doi.org/10.1524/zkri.1986.177.3-4.277

Articles in the same Issue

  1. The thermal expansion of Na2CO3
  2. Crystal structure of a beryllium-potassium polyphosphate: BeK(PO3)3
  3. 4-Amino-2-bromo-6-methyl-5,6,7,8-tetrahydropyrido[2,3-d]-pyrimidine
  4. An X-ray analysis of anomalous dispersion effects, anharmonicity and thermal vibrations in gallium phosphide
  5. An empirical model of optical susceptibilities of crystals I. Refractivity in alkali halides
  6. An empirical model of optical susceptibilities of crystals II. Elasto-optical effect in alkali halides
  7. Refinements of Ag3AsSe3 based on high-order thermal-motion tensors
  8. Crystal and molecular structure of α-naphthil
  9. The crystal and molecular structure of endo,endo-2,6-diphenacyl[4]peristylane
  10. Ancient oriental pattern and related zeolite type networks
  11. The crystal structure of saleeite, Mg[UO2PO4]2 · 10H2O
  12. Calculation of the electron diffraction intensities using the multi-slice method
  13. The triethanolamine complexes of calcium azide and strontium azide
  14. Crystal structure of trans-4-propyl cyclohexyl-4(trans-4-ethyl cyclohexyl) benzoate
  15. The crystal structure of β-NbPO5
  16. Structure of 2,7-dihydro-3,5,8-trimethylazuleno (6-5-b) furan-2,7-dione
  17. Die isotypen Phasen HEF6 · 5H2O · HF (E = P, As, Sb): Neubestimmung der Strukturen an Einkristallen1
  18. Crystal structure of a mixed crystal containing 3-benzoyl-2-phenyl-furo[2,3-b]quinoxaline and 3-benzoyl-2-phenyl-thieno[2,3-b]quinoxaline
  19. Splitpositionen für Alkalimetallkationen in den Thioindaten MIn5S8 (M = K, Rb, Cs)?
  20. Crystal structure of E-2-styrylquinoline(STQ), C17H13N
  21. 10.1515/zkri.1986.177.3-4.155
  22. 10.1515/zkri.1986.177.3-4.165
  23. 10.1515/zkri.1986.177.3-4.171
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  40. 10.1515/zkri.1986.177.3-4.315
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