WebElements Periodic Table of the Elements | Iron

Iron compounds: iron dibromide

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

Iron dibromide

Formula as often written: FeBr₂
Hill system formula: Br₂Fe₁
CAS registry number: [7789-46-0]
Formula weight: 215.653
Class: bromide

Synonyms

iron dibromide
iron(II) bromide
iron bromide

Physical properties

Colour: yellow to brown
Appearance: crystalline solid
Melting point: 684°C (decomposes)
Boiling point: 967°C
Density: 4636 kg m^-3)

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Element analysis

Element percentages for the elements in iron dibromide
Element	%
Br	74.10
Fe	25.90

Synthesis

Not available

Solid state structure

Geometry of iron:
Prototypical structure: CdI2

Crystal structure of iron dibromide

Isotope pattern

What follows is the calculated isotope pattern for the FeBr₂ unit with the most intense ion set to 100%.

Formula: Fe₁Br₂

mass  %
212   3.2 __
213   0.0 
214  55.9 ____________________________
215   1.2 _
216 100.0 __________________________________________________
217   2.3 _
218  47.4 ________________________
219   1.1 _
220   0.1

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.