Sodium germanate

Last updated
Sodium germanate
N2GeO3, idealized.svg
Names
Other names
sodium metagermanate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.031.535 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 234-703-0
PubChem CID
UNII
  • InChI=1S/GeO3.2Na/c2-1(3)4;;/q-2;2*+1
    Key: FNIHDXPFFIOGKL-UHFFFAOYSA-N
  • [O-][Ge](=O)[O-].[Na+].[Na+]
Properties
Na2GeO3
Molar mass 166.62 g/mol
Appearancewhite solid
Odor odorless
Density 3.31 g/cm3
Melting point 1,060 °C (1,940 °F; 1,330 K)
14.4 g/100 mL (0 °C)
23.8 g/100 mL (25 °C)
1.59
Structure
orthorhombic
Related compounds
Related compounds
Sodium silicate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Sodium germanate is an inorganic compound with the chemical formula Na2GeO3. It exists as a colorless solid. Sodium germanate is primarily used for the synthesis of other germanium compounds.

Contents

Preparation and reactions

Sodium germanate can be prepared by the fusion of germanium oxide with sodium hydroxide at high temperatures:

2 NaOH + GeO2 → Na2GeO3 + H2O

An intermediate in this reaction is the protonated derivative NaHGeO3, which is a water-soluble salt.

Structure

Structure of solid sodium germanate. (color scheme: red = O) Si resides at the center of the blue tetrahedra. Natriummetasilicat.png
Structure of solid sodium germanate. (color scheme: red = O) Si resides at the center of the blue tetrahedra.

it is structurally analogous to sodium metasilicate, Na2SiO3, consisting of polymeric GeO32− anions made up of vertex sharing {GeO4} tetrahedra. [1] [2]

See also

References

  1. Cruickshank, D. W. J.; Kálmán, A.; Stephens, J. S. (1978). "A Reinvestigation of Sodium Metagermanate". Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry. 34 (4): 1333–1334. Bibcode:1978AcCrB..34.1333C. doi:10.1107/S0567740878005488.
  2. C. C. Addison, Inorganic Chemistry of the Main-Group Elements, vol 1, 1973, The chemical Society, ISBN   9780851867526