Chlorine compounds: chlorine dioxide

chlorine symbol icon

The chlorine in chlorine dioxide formally is in the oxidation state 4.

Crystal structure of chlorine dioxide

Chlorine dioxide

  • Formula as often written: ClO2
  • Hill system formula: Cl1O2
  • CAS registry number: [10049-04-4]
  • Formula weight: 67.451
  • Class: oxide

Synonyms

  • chlorine dioxide
  • chlorine(IV) oxide
  • chlorine oxide

Physical properties

  • Colour: yellow-green or orange-green
  • Appearance: gas. Light sensitive.
  • Melting point: -76°C; -59°C
  • Boiling point: 10°C
  • Density: 3.0 kg m-3 (gas)

Suppliers

Coming soon...

Element analysis

Element percentages for the elements in chlorine dioxide
Element %
Cl 52.56
O 47.44

Synthesis

Not available

Solid state structure

  • Geometry of chlorine: 2 coordinate: bent
  • Prototypical structure:

Crystal structure of chlorine dioxide

Isotope pattern

What follows is the calculated isotope pattern for the ClO2 unit with the most intense ion set to 100%.

Formula: Cl1O2

mass  %
67 100.0 __________________________________________________
68 0.1
69 32.4 ________________
70 0.0
71 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.

WebElements Shop

WebElements now has a WebElements shop at which you can buy periodic table posters, mugs, T-shirts, games, fridge magnets, molecular models, and more.

Periodic Table fridge magnets Periodic Table fridge magnets
Buy our periodic table fridge magnets here

WebElements poster Periodic table t-shirts Periodic table mouse mats Molymod molecular model kits Chemistry educational resources

chlorine atomic number