Inorganic Solid Phases

K4(NbO)2(Si8O21) (K4Nb2Si8O23 tricl1) Crystal Structure

General Information

  • Phase Label(s): K4Nb2Si8O23 tricl1
  • Structure Class(es):
  • Classification by Properties:
  • Mineral Name(s):
  • Pearson Symbol: aP37
  • Space Group: 2
  • Phase Prototype: Cs4Nb2Si8O23
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), diffractometer; Syntex P1 (determination of structural parameters), X-rays, Mo Kα (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): silicate
  • Interpretation Detail(s): complete structure determined, least-squares refinement, R = 0.030; wR = 0.032
  • Sample Detail(s): sample prepared from Nb2O5, SiO2, KOH, electron microprobe analysis; 20.84 wt.% K2O, 51.10 wt.% SiO2, 51.10 wt.% Nb2O5, single crystal (determination of cell parameters), single crystal, 0.1×0.3×0.35 mm3 (determination of structural parameters)

Substance Summary

  • Standard Formula: K4Nb2Si8O23
  • Alphabetic Formula: K4Nb2O23Si8
  • Published Formula: K4(NbO)2(Si8O21)
  • Refined Formula: K4Nb2O23Si8
  • Wyckoff Sequence: 2,i18c
  • Z Formula Units: 1
  • Density: ρ = 2.93 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

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1211157

  • 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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