Inorganic Solid Phases

Ca4.5Pb5.5(PO4)6F2 (Ca2.25Pb2.75[PO4]3F) Crystal Structure

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General Information

  • Phase Label(s): Ca2.25Pb2.75[PO4]3F
  • Structure Class(es): apatite family
  • Classification by Properties: –
  • Mineral Name(s): –
  • Pearson Symbol: hP42
  • Space Group: 176
  • Phase Prototype: Ca5[PO4]3F
  • Measurement Detail(s): automatic diffractometer; Shimadzu (determination of structural parameters), X-rays, Cu Kα (determination of structural parameters)
  • Phase Class(es): –
  • Compound Class(es): orthophosphate, fluoride
  • Interpretation Detail(s): complete structure determined, Rietveld refinement, RP = 0.073; wRP = 0.105
  • Sample Detail(s): sample prepared from Ca5[PO4]3[OH]2, PbCl2, chemical analysis; composition confirmed; trace amounts of CaF2, powder (determination of structural parameters)

Substance Summary

  • Standard Formula: Ca2.25Pb2.75[PO4]3F
  • Alphabetic Formula: Ca2.25F[PO4]3Pb2.75
  • Published Formula: Ca4.5Pb5.5(PO4)6F2
  • Refined Formula: Ca2.24FO12P3Pb2.76
  • Wyckoff Sequence: 176,ih4fa
  • Z Formula Units: 2
  • Density: ρ = 5.32 Mg·m−3
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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
B [nm2]
Type
Computed
Beq [nm2]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1906370

  • 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)

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