Strontium compounds: strontium dibromide hexahydrate

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The strontium in strontium dibromide hexahydrate formally is in the oxidation state 2.

Strontium dibromide hexahydrate

  • Formula as often written: SrBr2.6H2O
  • Hill system formula: Br2H12O6Sr1
  • CAS registry number: [7789-53-9]
  • Formula weight: 355.52
  • Class: complex

Synonyms

  • strontium dibromide hexahydrate
  • strontium(II) bromide
  • strontium bromide

Physical properties

  • Colour: white
  • Appearance: crystalline solid
  • Melting point: 180°C (dehydrates to SrBr2)
  • Boiling point:
  • Density:

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Element analysis

Element percentages for the elements in strontium dibromide hexahydrate
Element %
Br 44.95
H 3.40
O 27.00
Sr 24.65

Synthesis

Pute strontium dibromide can be made on a small scale by the reaction of strontium metal in liquid ammonia with ammonium chloride.

Sr(NH3) + NH4Cl → 2SrCl2(s) + 2NH3 + H2(g)

The hexahydrate SrBr2.6H2O [7789-53-9] loses all six waters upon heating at 180°C to form anhydrous SrBr2.

Isotope pattern

What follows is the calculated isotope pattern for the SrBr2.6H2O unit with the most intense ion set to 100%.

Formula: Sr1Br2H12O6

mass  %
350   0.3 
351 0.0
352 6.4 ___
353 4.1 __
354 59.8 ______________________________
355 8.2 ____
356 100.0 __________________________________________________
357 4.3 __
358 46.8 _______________________
359 0.2
360 0.6

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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