|Compounds of boron:|
boron (II) fluoride
- Formula as commonly written: B2F4
- Hill system formula: B2F4
- CAS registry number: [13965-73-6]
- Formula weight: 97.616
- Class: fluoride
- boron (II) fluoride
- boron difluoride
- boron fluoride
- diboron tetrafluoride
- tetrafluorodiborane (4)
- Colour: colourless
- Appearance: gas
- Melting point: -56°C
- Boiling point: -34°C
- Density: 4.3 kg m-3 (gas)
Element analysis and oxidation numbersFor each compound, and where possible, a formal oxidation number for each element is given, but the usefulness of this number is limited, especially so for p-block elements in particular. Based upon that oxidation number, an electronic configuration is also given but note that for more exotic compounds you should view this as a guide only.
|Element||%||Formal oxidation state||Formal electronic configuration|
| B|| 22.15||2||[He].2s1|
| F|| 77.85||-1||[He].2s2.2p6|
Solid state structure
- Geometry of boron: 3 coordinate: trigonal
- Prototypical structure:
What follows is the calculated isotope pattern for the B2F4 unit with the most intense ion set to 100%.
mass %96 6.2 ___
97 49.7 _________________________
98 100.0 __________________________________________________
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.