Gallium(II) sulfide

Chembox new
Name = Gallium(II) sulfide
OtherNames = gallium sulfide
Section1 = Chembox Identifiers
CASNo = 12024-10-1
Section2 = Chembox Properties
Formula = GaS
MolarMass = 101.789 g/mol
Appearance = yellow
Density = 3.86 g/cm³, solid
Solubility =
MeltingPt = 965°C
BoilingPt =
Section7 = Chembox Hazards
EUClass = not listed

Gallium(II) sulfide, GaS, is a chemical compound of gallium and sulfur. The normal form of gallium(II) sulfide as made from the elements has a hexagonal layer structure containing Ga₂⁴⁺ units which have a Ga-Ga distance of 248pm.Greenwood&Earnshaw] This layer structure is similar to GaTe, GaSe and InSe. An unusual metastable form, with a distorted wurtzite structure has been reported as being produced using MOCVD. The metal organic precursors were di-tert-butyl gallium dithiocarbamates, for example Ga^tBu₂(S₂CNMe₂) and this was deposited onto GaAs. The structure of the GaS produced in this way is presumably Ga²⁺ S²⁻. [ "MOCVD Growth of Gallium Sulfide Using Di-tert-butyl Gallium Dithiocarbamate Precursors: Formation of a Metastable Phase of GaS" A. Keys, S G. Bott, A. R. Barron Chem. Mater., 11 (12), 3578 -3587, 1999. doi|10.1021/cm9903632]

References

[http://www.webelements.com/ WebElements]