Barium compounds: barium dihydride
The barium in barium dihydride formally is in the oxidation state 2.
- Formula as often written: BaH2
- Hill system formula: Ba1H2
- CAS registry number: [13477-09-3]
- Formula weight: 139.343
- Class: hydride
- barium dihydride
- barium(II) hydride
- barium hydride
- Colour: grey
- Appearance: crystalline solid
- Melting point: 1200°C; 675°C (decomposes to metal with loss of H2)
- Boiling point:
- Density: 4160 kg m-3
Element percentages for the elements in barium dihydride
Barium hydride is made by the reaction of barium metal and hydrogen gas at high temperature and pressure.
Ba(s) + H2(g) → BaH2(s)
Solid state structure
- Geometry of barium:
- Prototypical structure:
What follows is the calculated isotope pattern for the BaH2 unit with the most intense ion set to 100%.
136 3.4 __
137 9.2 _____
138 11.0 ______
139 15.7 ________
140 100.0 __________________________________________________
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.