Iron(III) sulfide, also known as ferric sulfide or sesquisulfide (), is one of the several binary
iron sulfide
Iron sulfide or Iron sulphide can refer to range of chemical compounds composed of iron and sulfur.
Minerals
By increasing order of stability:
* Iron(II) sulfide, FeS
* Greigite, Fe3S4 (cubic)
* Pyrrhotite, Fe1−xS (where x = 0 to 0.2) (monoclin ...
s. It is a solid, black powder that degrades at ambient temperature.
Reactions
() decays at a temperature over 20 °C into
iron(II) sulfide (FeS) and
elemental sulfur:
: Fe
2S
3 → 2 FeS + S
With hydrochloric acid it decays according to the following reaction equation:
[H. Roempp, ''Chemie'' (1997), S. 1099; ]
: Fe
2S
3 + 4 HCl → 2 FeCl
2 + 2 H
2S + S
Greigite
Greigite, with the chemical formula , is a
mixed valence compound
Mixed valence complexes contain an element which is present in more than one oxidation state. Well-known mixed valence compounds include the Creutz–Taube complex, Prussian blue, and molybdenum blue. Many solids are mixed-valency including in ...
containing both Fe(III) and Fe(II). It is the sulfur equivalent of the iron oxide
magnetite (Fe
3O
4). As established by
X-ray crystallography, the S anions form a cubic close-packed lattice, and the Fe cations occupy both tetrahedral and octahedral sites.>
[Vaughan, D. J.; Craig, J. R. “Mineral Chemistry of Metal Sulfides" Cambridge University Press, Cambridge: 1978. .]
References
{{Iron compounds
Iron(III) compounds
Sulfides
Synthetic materials