Gallium(III) fluoride

Gallium(III) fluoride
Names
Other names
gallium trifluoride
Identifiers
7783-51-9 
ChemSpider 74191 Yes
Jmol-3D images Image
PubChem 82211
Properties
GaF3
Molar mass 126.718 g/mol
Appearance white powder
Density 4.47 g/cm3
Melting point 800 °C (1,470 °F; 1,070 K)
Boiling point 1,000 °C (1,830 °F; 1,270 K)
0.0002 g/100 mL
Structure
Crystal structure Rhombohedral, hR24
Space group R-3c, No. 167
Hazards
EU classification not listed
NFPA 704
Flammability code 0: Will not burn. E.g., water Health code 3: Short exposure could cause serious temporary or residual injury. E.g., chlorine gas Reactivity code 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g., phosphorus Special hazards (white): no codeNFPA 704 four-colored diamond
0
3
2
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
  verify (what is: Yes/?)
Infobox references

Gallium(III) fluoride (GaF3) is a chemical compound. It is a white solid that melts under pressure above 1000 °C but sublimes around 950 °C. It has the FeF3 structure where the gallium atoms are 6-coordinate.[1] GaF3 can be prepared by reacting F2 or HF with Ga2O3 or by thermal decomposition of (NH4)3GaF6.[2] GaF3 is virtually insoluble in water.[2] Solutions of GaF3 in HF can be evaporated to form the trihydrate, GaF3·3H2O, which on heating gives a hydrated form of GaF2(OH).[2] Gallium(III) fluoride reacts with mineral acids to form hydrofluoric acid.

view along the an axis
view along the c axis
Ga coordination
F coordination

References

  1. ↑ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 0080379419.
  2. ↑ 2.0 2.1 2.2 Anthony John Downs, (1993), Chemistry of Aluminium, Gallium, Indium, and Thallium, Springer, ISBN 978-0-7514-0103-5

Further reading