WebElements Periodic Table of the Elements | Ruthenium

Ruthenium compounds: ruthenium tetraoxide

The ruthenium in ruthenium tetraoxide formally is in the oxidation state 8.

Ruthenium tetraoxide

Formula as often written: RuO₄
Hill system formula: O₄Ru₁
CAS registry number: [20427-56-9]
Formula weight: 165.068
Class: oxide

Synonyms

ruthenium tetraoxide
ruthenium(VIII) oxide
ruthenium oxide

Physical properties

Colour: yellow
Appearance: crystalline solid
Melting point: 25.4°C
Boiling point: 130°C
Density: 3290 kg m^-3

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Element analysis

Element percentages for the elements in ruthenium tetraoxide
Element	%
O	38.77
Ru	61.23

Synthesis

Not available

Solid state structure

Geometry of ruthenium:
Prototypical structure:

Crystal structure of ruthenium tetraoxide

Isotope pattern

What follows is the calculated isotope pattern for the RuO₄ unit with the most intense ion set to 100%.

Formula: Ru₁O₄

mass  %
160  17.4 _________
161   0.0 
162   6.1 ___
163  40.0 ____________________
164  39.8 ____________________
165  54.0 ___________________________
166 100.0 __________________________________________________
167   0.6 
168  59.7 ______________________________
169   0.1 
170   0.5

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.