Gallium(III) fluoride

Gallium(III) fluoride

Gallium(III) fluoride
Names
Other names gallium trifluoride
Identifiers
CAS Number	7783-51-9^Y
3D model (JSmol)	Interactive image
ChemSpider	74191^Y
ECHA InfoCard	100.029.094
EC Number	232-004-5
PubChem CID	82211
UNII	3EG50JLZ49^Y
CompTox Dashboard (EPA)	DTXSID6064824
InChI InChI=1S/3FH.Ga/h3*1H;/q;;;+3/p-3^Y Key: WXXZSFJVAMRMPV-UHFFFAOYSA-K^Y InChI=1/3FH.Ga/h3*1H;/q;;;+3/p-3 Key: WXXZSFJVAMRMPV-DFZHHIFOAM
SMILES F[Ga](F)F
Properties
Chemical formula	GaF3
Molar mass	126.718 g/mol
Appearance	white powder
Density	4.47 g/cm^3
Melting point	800 °C (1,470 °F; 1,070 K)
Boiling point	1,000 °C (1,830 °F; 1,270 K)
Solubility in water	0.0002 g/100 mL
Structure
Crystal structure	Rhombohedral, hR24
Space group	R-3c, No. 167
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H312, H332
Precautionary statements	P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P312, P304+P340, P312, P322, P330, P363, P501
NFPA 704 (fire diamond)	3 0 0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is ^YN ?) 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 a 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. doi:10.1016/C2009-0-30414-6. ISBN 978-0-08-037941-8.
2. Anthony John Downs, (1993), Chemistry of Aluminium, Gallium, Indium, and Thallium, Springer, ISBN 978-0-7514-0103-5

Further reading

• Barrière, A.S.; Couturier, G.; Gevers, G.; Guégan, H.; Seguelond, T.; Thabti, A.; Bertault, D. (1989). "Preparation and characterization of gallium(III) fluoride thin films". Thin Solid Films. 173 (2): 243. Bibcode:1989TSF...173..243B. doi:10.1016/0040-6090(89)90140-5.