Iron(III) bromide

  • Tribromide
  • Iron bromide ( ambiguous )
  • Ferrum bromatum ( ambiguous )

Brown - red crystalline solid

Fixed

4.5 g · cm -3

200 ° C ( decomposition)

Attention

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Iron (III) bromide, is a chemical compound of iron and one of the bromides.

Production and representation

Iron (III ) bromide may be formed by reaction of iron with bromine.

It can also be obtained in the preparation of potassium salts.

Properties

Iron (III ) bromide may decompose at temperatures > 200 ° C, iron ( II) bromide and bromine. The reaction is reversible at a lower temperature.

Iron (III ) bromide crystallizes in the trigonal crystal system with the space group R3. The lattice constants are a = 639.7 pm and c = 1837.5 pm.

Use

Iron bromide is in aromatic substitutions (eg, electrophilic aromatic substitution, bromination of benzene ) was used as catalyst ( Lewis acid).

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