WebElements Periodic Table of the Elements | Molybdenum

Molybdenum compounds: tetramolybdenum_eicosafluoride

The molybdenum in tetramolybdenum_eicosafluoride formally is in the oxidation state 5.

Tetramolybdenum_eicosafluoride

Formula as often written: Mo₄F₂₀
Hill system formula: F₅Mo₁
CAS registry number: [13819-84-6]
Formula weight: 190.932
Class: fluoride

Synonyms

tetramolybdenum_eicosafluoride
molybdenum(V) fluoride
molybdenum fluoride
molybdenum pentafluoride
molybdenum pentafluoride tetramer

Physical properties

Colour: yellow
Appearance: crystalline solid
Melting point: 67°C
Boiling point: 213°C
Density: 3500 kg m^-3

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Element analysis

Element percentages for the elements in tetramolybdenum_eicosafluoride
Element	%
F	49.75
Mo	50.25

Synthesis

Not available

Solid state structure

Geometry of molybdenum:
Prototypical structure:

Crystal structure of tetramolybdenum_eicosafluoride

Isotope pattern

What follows is the calculated isotope pattern for the Mo₄F₂₀ unit with the most intense ion set to 100%.

Formula: Mo₁F₅

mass  %
187  61.5 _______________________________
188   0.0 
189  38.3 ___________________
190  66.0 _________________________________
191  69.1 ___________________________________
192  39.6 ____________________
193 100.0 __________________________________________________
194   0.0 
195  39.9 ____________________

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.