Inorganic Solid Phases

K2[(NpO2)2(CrO4)3(H2O)]·3H2O (K2[NpO2]2[CrO4]3[H2O]4) Crystal Structure

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General Information

  • Phase Label(s): K2[NpO2]2[CrO4]3[H2O]4
  • Structure Class(es): –
  • Classification by Properties: –
  • Mineral Name(s): –
  • Pearson Symbol: mP108
  • Space Group: 14
  • Phase Prototype: K2[NpO2]2[CrO4]3[H2O]4
  • Measurement Detail(s): automatic diffractometer; 16 (determination of cell parameters), automatic diffractometer; Enraf-Nonius CAD4 (determination of structural parameters), X-rays, Mo Kα (determination of cell and structural parameters), T = 293 K (determination of cell parameters)
  • Phase Class(es): –
  • Compound Class(es): chromate, hydrate
  • Interpretation Detail(s): positions of non-H and part of H atoms determined, full-matrix least-squares refinement; 268 variables; 1965 reflections, R = 0.0255; wR = 0.0631
  • Sample Detail(s): sample prepared from K2CrO4, NpO2[NO3]2, single crystal (determination of cell parameters), single crystal, 0.08×0.14×0.25 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: K2[NpO2]2[CrO4]3[H2O]4
  • Alphabetic Formula: [CrO4]3[H2O]4K2[NpO2]2
  • Published Formula: K2[(NpO2)2(CrO4)3(H2O)]·3H2O
  • Refined Formula: Cr3H8K2Np2O20
  • Wyckoff Sequence: 14,e27
  • Z Formula Units: 4
  • Density: ρ = 3.77 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_1907218

  • 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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