Inorganic Solid Phases

Na+·C4HO4·H2O (HNa[C4O4][H2O]) Crystal Structure

General Information

  • Phase Label(s): HNa[C4O4][H2O]
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s):
  • Pearson Symbol: mP20
  • Space Group: 7
  • Phase Prototype: HNa[C4O4][H2O]
  • Measurement Detail(s): automatic diffractometer; 22 (determination of cell parameters), automatic diffractometer; Enraf-Nonius CAD4 (determination of structural parameters), X-rays, Mo Kα; λ = 0.071073 nm (determination of cell and structural parameters), T = 290 K (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): squarate, hydrate
  • Interpretation Detail(s): complete structure determined, full-matrix least-squares refinement; 91 variables; 760 reflections, wR = 0.145
  • Sample Detail(s): sample prepared from Na2CO3, squaric acid, thermogravimetry, single crystal (determination of cell parameters), single crystal, 0.24×0.25×0.26 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: HNa[C4O4][H2O]
  • Alphabetic Formula: [C4O4]H[H2O]Na
  • Published Formula: Na+·C4HO4·H2O
  • Refined Formula: C4H3NaO5
  • Wyckoff Sequence: 7,a10
  • Z Formula Units: 2
  • Density: ρ = 1.87 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_1420899

  • 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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