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Lithium hexafluorogermanate

Lithium hexafluorogermanate
Names
IUPAC name
Lithium hexafluorogermanate
Other names
Lithium germanium fluoride
Identifiers
3D model (JSmol)
  • InChI=1S/F6Ge.2Li/c1-7(2,3,4,5)6;;/q-2;2*+1
  • Key: CRAVKAIWEHPLQK-UHFFFAOYSA-N
  • [Li+].[Li+].F[Ge-2](F)(F)(F)(F)F
  • [Li+].[Li+].F[Ge-2](F)(F)(F)(F)F
Properties
Li2GeF6
Molar mass 200.51 g/mol
Appearance white solid
Melting point 510 °C (950 °F; 783 K)
53.9 g / 100 g water (25°C)
Hazards
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
2
0
0
Safety data sheet (SDS) External MSDS
Related compounds
Related compounds
Gadolinium oxysulfide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Lithium hexafluorogermanate is the inorganic compound with the formula Li2GeF6. It forms a solid off-white deliquescent powder. When exposed to moisture, it easily hydrolyses to release hydrogen fluoride and germanium tetrafluoride gases.[1]

Reactions and applications

Lithium hexafluorogermanate can be dissolved in a solution of hydrogen fluoride, which forms a precipitate of lithium fluoride.[2]

It can be used as a densification aid in the sintering of gadolinium oxysulfide,[3][4] and as a lithium salt additive in a lithium-ion battery electrolyte.[5]

References

  1. ^ "Lithium Hexafluorogermanate Safety Data Sheet" (PDF). Lorad Chemical Corporation. Retrieved 2017-09-20.
  2. ^ Tychinskaya, I.I., Opalovskii, A.A. & Nikolaev, N.S. Russ Chem Bull (1965) 14: 725. https://doi.org/10.1007/BF00846742
  3. ^ L. S. Bolyasnikova, V. A. Demidenko, S. B. Eron'ko, O. P. Ovsyannikova, and S. B. Mikhrin, "Gd2O2S:Pr:Ce Optical Scintillation Ceramics and their Properties," J. Opt. Technol. 73, 138-142 (2006).
  4. ^ "Lithium Hexafluorogermanate". Lorad Chemical Corporation. Retrieved 2017-09-19.
  5. ^ CN application 103326066, Gong Weihua, "Lithium-ion battery electrolyte", published 2013-09-25, assigned to Suzhou Nuoxin Innovation Energy Co. Ltd. 
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