Berkelium(IV) oxide

Berkelium(IV) oxide

Names
Other names Berkelium dioxide
Identifiers
CAS Number	12010-84-3^N[EPA]
3D model (JSmol)	Interactive image
PubChem CID	165360219
CompTox Dashboard (EPA)	DTXSID201337109
InChI InChI=1S/Bk.2O/q+4;2*-2 Key: HHLDADCCGFTHIT-UHFFFAOYSA-N
SMILES [O-2].[O-2].[Bk+4]
Properties
Chemical formula	BkO2
Molar mass	278.9988 g/mol
Appearance	Brown solid
Structure[1]
Crystal structure	cubic
Space group	Fm3m
Lattice constant	a = 533.2 pm, b = 533.2 pm, c = 533.2 pm
Related compounds
Other anions	Berkelium(IV) sulfide
Other cations	Americium(IV) oxide Curium(IV) oxide Californium(IV) oxide
Related compounds	Berkelium(III) oxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Berkelium(IV) oxide, also known as berkelium dioxide, is a chemical compound with the formula BkO₂. This compound slowly decays to californium(IV) oxide.^[2] It can be converted to berkelium(III) oxide by hydrogen reduction at 600 °C.^[3]

2BkO₂ + H₂ → Bk₂O₃ + H₂O

Production

Berkelium(IV) oxide is produced by burning berkelium metal in air at 1200 °C. It can also be produced by reacting berkelium(III) oxide with oxygen at 600 °C.^[3]

References

1. Baybarz, R. D. (1968). "The berkelium oxide system". Journal of Inorganic and Nuclear Chemistry. 30 (7): 1769–1773. doi:10.1016/0022-1902(68)80352-5.
2. U.S Atomic Energy Commission. Division of Plans and Reports (1972). Fundamental Nuclear Energy Research. the University of Michigan. p. 100.
3. Peterson, J. (1967). "Crystal structures and lattice parameters of the compounds of berkelium I. Berkelium dioxide and cubic berkelium sesquioxide". Inorganic and Nuclear Chemistry Letters. 3 (9): 327–336. doi:10.1016/0020-1650(67)80037-0.