Potassium polonide

Potassium polonide is a chemical compound with the formula K₂Po. It is a polonide, a set of very chemically stable compounds of polonium.^[2][3]

Potassium polonide

Crystal structure of potassium polonide __ K+     __ Po2-
Names
Preferred IUPAC name Potassium polonide
Identifiers
3D model (JSmol)	Interactive image
InChI InChI=1S/2K.Po/q2*+1;-2 Key: NUJFXRJXZUAAQT-UHFFFAOYSA-N
SMILES [K+].[K+].[Po-2]
Properties
Chemical formula	K2Po
Molar mass	287.18 g/mol
Appearance	greyish[1]
Related compounds
Other anions	Potassium oxide Potassium sulfide Potassium selenide Potassium telluride
Other cations	Lithium polonide Sodium polonide Rubidium polonide Caesium polonide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Characteristics

Potassium polonide is thermally more unstable and has stronger electron affinity than potassium telluride (K₂Te).^[2][3]

Production

Potassium polonide may be produced from a redox reaction between polonium hydride and potassium metal:^[2][3]

H₂Po + 2 K → K₂Po + H₂

It may also be produced by heating potassium and polonium together at 300–400 °C.^[1] At higher temperature, this reaction may reverse.

Crystal structure

Like sodium polonide, potassium polonide has the antifluorite structure.^[2][3]

References

1. Bagnall, K. W. (1962). "The Chemistry of Polonium". Advances in Inorganic Chemistry and Radiochemistry. New York: Academic Press. pp. 197–230. ISBN 9780120236046. Retrieved June 17, 2012.
2. Greenwood, Norman N.; Earnshaw, Alan (1984). Chemistry of the Elements. Oxford: Pergamon Press. p. 899. ISBN 978-0-08-022057-4.
3. Moyer, Harvey V. (1956), "Chemical Properties of Polonium", in Moyer, Harvey V. (ed.), Polonium, Oak Ridge, Tenn.: United States Atomic Energy Commission, pp. 33–96, doi:10.2172/4367751, TID-5221