Iodine compounds: diiodine hexachloride

iodine symbol icon

The iodine in diiodine hexachloride formally is in the oxidation state 3.

Crystal structure of diiodine hexachloride

Diiodine hexachloride

  • Formula as often written: [ICl3]2
  • Hill system formula: Cl6I2
  • CAS registry number: [865-44-1]
  • Formula weight: 466.525
  • Class: chloride

Synonyms

  • diiodine hexachloride
  • iodine(III) chloride
  • iodine chloride
  • iodine trichloride

Physical properties

  • Colour: yellow
  • Appearance: crystalline solid
  • Melting point: 101°C (16 atmospheres, 65°C decomposes)
  • Boiling point:
  • Density: 3200 kg m-3

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Element analysis

Element percentages for the elements in diiodine hexachloride
Element %
Cl 45.60
I 54.40

Synthesis

Not available

Solid state structure

  • Geometry of iodine:
  • Prototypical structure:

Crystal structure of diiodine hexachloride

Isotope pattern

What follows is the calculated isotope pattern for the [ICl3]2 unit with the most intense ion set to 100%.

Formula: I2Cl6

mass  %
464  52.1 __________________________
465 0.0
466 100.0 __________________________________________________
467 0.0
468 80.0 ________________________________________
469 0.0
470 34.1 _________________
471 0.0
472 8.2 ____
473 0.0
474 1.0
475 0.0
476 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.

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