Inorganic Solid Phases

Sr8Ga16Ge30 (Sr4Ga8Ge15, T = 230 K) Crystal Structure

General Information

  • Phase Label(s): Sr4Ga8Ge15
  • Structure Class(es): clathrate
  • Classification by Properties: metal, semiconductor
  • Mineral Name(s):
  • Pearson Symbol: cP72
  • Space Group: 223
  • Phase Prototype: Sr4(Ga0.35Ge0.65)23-b
  • Measurement Detail(s): automatic diffractometer; 22 (determination of cell parameters), automatic diffractometer; U.S.A. Tennessee, Oak Ridge National Laboratory ORNL, HFIR, HB-2A beamline (determination of structural parameters), neutrons; λ = 0.10037 nm (determination of cell parameters), neutrons (determination of structural parameters), T = 230 K (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): intermetallic
  • Interpretation Detail(s): complete structure determined, full-matrix least-squares refinement; 205 reflections; I > 3σ(I), R = 0.075; wR = 0.131
  • Sample Detail(s): sample prepared from SrGe2, Ga, single crystal (determination of cell parameters), single crystal, 1.5×1.5×1.75 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: Sr4Ga8Ge15
  • Alphabetic Formula: Ga8Ge15Sr4
  • Published Formula: Sr8Ga16Ge30
  • Refined Formula: Ga8Ge15Sr4
  • Wyckoff Sequence: 223,k2ica
  • Z Formula Units: 2
  • Density: ρ = 5.36 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_1804549

  • 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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