Inorganic Solid Phases

Sr4Nb2O9 (Sr2.72Nb1.28O5.92) Crystal Structure

General Information

  • Phase Label(s): Sr2.72Nb1.28O5.92
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s):
  • Pearson Symbol: cF88
  • Space Group: 225
  • Phase Prototype: Sr2(Sr0.897Nb0.103)NbO5.654
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; U.S.A. Maryland, Gaithersburg, NIST Center for Neutron Research, NBSR, BT-1 (determination of structural parameters), X-rays, Cu Kα1 (determination of cell parameters), neutrons; λ = 0.15404 nm (determination of structural parameters)
  • Phase Class(es):
  • Compound Class(es): oxide
  • Interpretation Detail(s): complete structure determined, Rietveld refinement, RP = 0.0571; wRP = 0.0533; RB = 0.1244
  • Sample Detail(s): sample prepared from SrCO3, Nb2O5, energy-dispersive X-ray analysis, powder (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: Sr2.67Nb1.33O6
  • Alphabetic Formula: Nb1.33O6Sr2.67
  • Published Formula: Sr4Nb2O9
  • Refined Formula: Nb1.33O6Sr2.67
  • Wyckoff Sequence: 225,ecba
  • Z Formula Units: 4
  • Density: ρ = 5.33 Mg·m−3

Crystallographic Data

Cell Parameters

Published Data
Standardized Data
Unit Cell
Niggli-Reduced Cell
Space Group
a
b
c
α
β
γ
a/b
b/c
c/a
V

Atom Coordinates

Standardized

Site
Element
Wyckoff Symbol
Symmetry
X
Y
Z
Occupation
Co-ord. No.
Atomic Env.

Published

Site
Element
Wyckoff Symbol
Symmetry
X
Y
Z
Occupation

Displacement Parameters

Isotropic

Site
Published
U [nm2]
Type
Computed
Beq [nm2]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1410461

  • Copyright

    ©Springer & Material Phases Data System (MPDS), Switzerland & National Institute for Materials Science (NIMS), Japan, 2016

  • Chief Editor

    Pierre Villars, Material Phases Data System (MPDS), CH-6354 Vitznau, Switzerland

    villars.mpds@bluewin.ch

  • Credits

    SpringerMaterials Release 2016.

    Data generated pre-2002: © Springer & MPDS & NIMS; post-2001: © Springer & MPDS

    All Rights Reserved. Version 2016.10.

    Project Coordinator: Shuichi Iwata

    Section-Editor: Karin Cenzual (Crystal Structures)

  • Cite this content

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