Inorganic Solid Phases

Li2Be2F7NH4, rt (Li2[NH4]Be2F7 rt) Crystal Structure

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General Information

  • Phase Label(s): Li2[NH4]Be2F7 rt
  • Structure Class(es): –
  • Classification by Properties: –
  • Mineral Name(s): –
  • Pearson Symbol: oP48
  • Space Group: 62
  • Phase Prototype: BaBe2[Si2O7]
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; Enraf-Nonius CAD4F (determination of structural parameters), X-rays, Mo Kα; λ = 0.071073 nm (determination of cell and structural parameters), T = 298(2) K (determination of cell and structural parameters)
  • Phase Class(es): –
  • Compound Class(es): fluoride
  • Interpretation Detail(s): complete structure determined, full-matrix least-squares refinement; 65 variables; 688 reflections; I > 2σ(I), R = 0.0463; wR = 0.0819
  • Sample Detail(s): sample prepared from NH4F, BeF2, HF, Li2CO3, chemical analysis; 0.12 wt.% C, 2.39 wt.% H, 7.83 wt.% N, single crystal (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: Li2[NH4]Be2F7
  • Alphabetic Formula: Be2F7Li2[NH4]
  • Published Formula: Li2Be2F7NH4, rt
  • Refined Formula: Be2F7H4Li2N
  • Wyckoff Sequence: 62,d5c2
  • Z Formula Units: 4
  • Density: ρ = 2.00 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
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_1626078

  • 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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