WebElements Periodic Table of the Elements | Potassium

Potassium compounds: dipotassium pentasulphide

The potassium in dipotassium pentasulphide formally is in the oxidation state 1.

Dipotassium pentasulphide

Formula as often written: K₂S₅
Hill system formula: K₂S₅
CAS registry number: [12136-50-4]
Formula weight: 238.527
Class: sulphide

Synonyms

dipotassium pentasulphide
potassium(I) persulphide
dipotassium pentasulfide
dipotassium persulfide
dipotassium persulphide
potassium persulfide
potassium persulphide
potassium(I) persulfide

Physical properties

Colour:
Appearance: solid
Melting point: 211°C
Boiling point:
Density:

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Element analysis

Element percentages for the elements in dipotassium pentasulphide
Element	%
K	32.78
S	67.22

Synthesis

Not available

Isotope pattern

What follows is the calculated isotope pattern for the K₂S₅ unit with the most intense ion set to 100%.

Formula: K₂S₅

mass  %
238 100.0 __________________________________________________
239   4.0 __
240  36.6 __________________
241   1.3 _
242   5.8 ___
243   0.2 
244   0.5 
245   0.0 
246   0.0

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.