- Formula: OF2
- Hill system formula: F2O1
- CAS registry number: [7783-41-7]
- Formula weight: 53.996
- Class: fluoride
- Colour: colourless
- Appearance: gas
- Melting point: -224°C
- Boiling point: -145°C
- Density: 2.26 kg dm-3 (gas)
The following are some synonyms of oxygen difluoride:
- oxygen difluoride
- oxygen(II) fluoride
- difluorine monoxide
- fluorine oxide
- oxygen fluoride
The oxidation number of oxygen in oxygen difluoride is 2.
2NaOH + 2F2 → OF2 + 2NaF + H2O
The reaction between fluorine gas and a dilute solution of sodium hydroxide in water results in oxygen fluoride. The product gas also contains oxygen. When pure, oxygen fluoride has a melting point of -223.8°C and boils at -144.8°C. It is soluble to some extent in water.
Solid state structure
- Geometry of oxygen:
- Prototypical structure:
The table shows element percentages for OF2 (oxygen difluoride).
Isotope pattern for OF2
The chart below shows the calculated isotope pattern for the formula OF2 with the most intense ion set to 100%.
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.