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Compounds of beryllium:
beryllium (II) chloride
- Formula as commonly written: BeCl2
- Hill system formula: Be1Cl2
- CAS registry number: [7787-47-5]
- Formula weight: 79.918
- Class: chloride
Synonyms
- beryllium (II) chloride
- beryllium chloride
- beryllium dichloride
Physical properties
- Colour: white to pale yellow
- Appearance: crystalline solid
- Melting point: 415°C
- Boiling point: 482°C; 520°C
- Density: l900 kg m-3
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Element analysis and oxidation numbers
For 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 |
|
Be |
11.28 |
2 |
[He] |
|
Cl |
88.72 |
-1 |
[Ne].3s2.3p6 |
Synthesis
Beryllium bromide can be made by the direct reaction of the elements at high temperatures.
Be(s) + Cl2(g) (400°C) → BeCl2(s)
Solid state structure
- Geometry of beryllium:
- Prototypical structure:

Isotope pattern
What follows is the calculated isotope pattern for the BeCl2 unit with the most intense ion set to 100%.
Formula: Be1Cl2
mass %
79 100.0 __________________________________________________ 80 0.0 81 64.0 ________________________________ 82 0.0 83 10.2 _____
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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