Inorganic Solid Phases

La3Ni2+xSi8−x (x ≈ 1), La3Ni3.01(2)Si6.99(2) (La3Ni3Si7, T = 90(3) K) Crystal Structure

General Information

  • Phase Label(s): La3Ni3Si7
  • Structure Class(es):
  • Classification by Properties: metal, superconductor
  • Mineral Name(s):
  • Pearson Symbol: oS26
  • Space Group: 65
  • Phase Prototype: Ce3Ni2Si8
  • Measurement Detail(s): automatic diffractometer; Bruker AXS SMART (determination of structural parameters), X-rays, Mo Kα (determination of structural parameters), T = 90(3) K (determination of structural parameters)
  • Phase Class(es):
  • Compound Class(es): silicide
  • Interpretation Detail(s): complete structure determined, full-matrix least-squares refinement, R = 0.0283; wR = 0.0638
  • Sample Detail(s): sample prepared from La, Ni, Si, electron microprobe analysis; La/Ni/Si ratio 3.00(1)/3.07(1)/6.95(1), single crystal, 0.10×0.13×0.20 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: La3Ni3Si7
  • Alphabetic Formula: La3Ni3Si7
  • Published Formula: La3Ni2+xSi8−x (x ≈ 1), La3Ni3.01(2)Si6.99(2)
  • Refined Formula: La3Ni3.01Si6.99
  • Wyckoff Sequence: 65,j3i3a
  • Z Formula Units: 2
  • Density: ρ = 5.76 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_1908175

  • 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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