WebElements Periodic Table of the Elements | Iron

Iron compounds: iron persulphide

The iron in iron persulphide formally is in the oxidation state 2.

Iron persulphide

Formula as often written: FeS₂
Hill system formula: Fe₁S₂
CAS registry number: [1317-66-4]
Formula weight: 119.977
Class: sulphide

Synonyms

iron persulphide
iron(II) sulphide
Iron disulfide
Iron disulphide
iron persulfide
iron(II) sulfide
pyrite

Physical properties

Colour: yellow
Appearance: crystalline solid, metallic appearance
Melting point: 600°C (decomposes)
Boiling point:
Density: 5000 kg m^-3

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Element analysis

Element percentages for the elements in iron persulphide
Element	%
Fe	46.55
S	53.45

Synthesis

Not available

Solid state structure

Geometry of iron:
Prototypical structure:

Crystal structure of iron persulphide

Isotope pattern

What follows is the calculated isotope pattern for the FeS₂ unit with the most intense ion set to 100%.

Formula: Fe₁S₂

mass  %
118   6.3 ___
119   0.1 
120 100.0 __________________________________________________
121   4.0 __
122   9.2 _____
123   0.3 
124   0.3 
125   0.0 
126   0.0

References

The data on these compounds pages are assembled and adapted from the primary literature and several other sources including the following.

R.T. Sanderson in Chemical Periodicity, Reinhold, New York, USA, 1960.
N.N. Greenwood and A. Earnshaw in Chemistry of the Elements, 2nd edition, Butterworth, UK, 1997.
F.A. Cotton, G. Wilkinson, C.A. Murillo, and M. Bochmann, in Advanced Inorganic Chemistry, John Wiley & Sons, 1999.
A.F. Trotman-Dickenson, (ed.) in Comprehensive Inorganic Chemistry, Pergamon, Oxford, UK, 1973.
R.W.G. Wyckoff, in Crystal Structures, volume 1, Interscience, John Wiley & Sons, 1963.
A.R.West in Basic solid state chemistry Chemistry, John Wiley & Sons, 1999.
A.F. Wells in Structural inorganic chemistry, 4th edition, Oxford, UK, 1975.
J.D.H. Donnay, (ed.) in Crystal data determinative tables, ACA monograph number 5, American Crystallographic Association, USA, 1963.
D.R. Lide, (ed.) in Chemical Rubber Company handbook of chemistry and physics, CRC Press, Boca Raton, Florida, USA, 77th edition, 1996.
J.W. Mellor in A comprehensive treatise on inorganic and theoretical chemistry, volumes 1-16, Longmans, London, UK, 1922-1937.
J.E. Macintyre (ed.) in Dictionary of inorganic compounds, volumes 1-3, Chapman & Hall, London, UK, 1992.