Inorganic Solid Phases

Na3.0LaSi6O15·2.25H2O (Na3LaSi6O15[H2O]2.25) Crystal Structure

General Information

  • Phase Label(s): Na3LaSi6O15[H2O]2.25
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s):
  • Pearson Symbol: oS122
  • Space Group: 35
  • Phase Prototype: Na3NdSi6O15[H2O]2
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; Oxford Diffraction Gemini R Ultra (determination of structural parameters), X-rays, Mo Kα; λ = 0.071073 nm (determination of cell and structural parameters), T = 293 K (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): silicate, hydrate
  • Interpretation Detail(s): positions of non-H atoms determined; absolute structure determined, full-matrix least-squares refinement on F2; 140 variables; 1896 reflections; I > 2σ(I), R = 0.053; wR = 0.149
  • Sample Detail(s): sample prepared from SiO2, NaOH, La2O3, amounts of unidentified phase, twinned crystal (determination of cell parameters), twinned crystal, 0.04×0.05×0.17 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: Na3LaSi6O15[H2O]2.25
  • Alphabetic Formula: [H2O]2.25LaNa3O15Si6
  • Published Formula: Na3.0LaSi6O15·2.25H2O
  • Refined Formula: H4.50LaNa3O17.25Si6
  • Wyckoff Sequence: 35,f9e10dca
  • Z Formula Units: 4
  • Density: ρ = 2.65 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]

Anisotropic

Site
U11 [nm2]
U22 [nm2]
U33 [nm2]
U12 [nm2]
U13 [nm2]
U23 [nm2]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1126000

  • 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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