- Formula: CaH2
- Hill system formula: Ca1H2
- CAS registry number: [7789-78-8]
- Formula weight: 42.094
- Class: hydride
- Colour: white or grey
- Appearance: crystalline solid
- Melting point: 816°C (under hydrogen gas)
- Boiling point:
- Density: 1700 kg m-3
The following are some synonyms of calcium dihydride:
- calcium dihydride
- calcium(II) hydride
- calcium dihydride
The oxidation number of calcium in calcium dihydride is 2.
Calcium hydride may be made by the reaction of calcium metal with hydrogen gas.
Ca(s) + H2(aq) (heat) → CaH2(s)
Solid state structure
- Geometry of calcium:
- Prototypical structure: CdI2
The table shows element percentages for CaH2 (calcium dihydride).
Isotope pattern for CaH2
The chart below shows the calculated isotope pattern for the formula CaH2 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.