Curium(III) hydroxide

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Curium hydroxide
Curium(III) hydroxide Curium hydroxide
Curium(III) hydroxide
Curium hydroxide
Names
IUPAC name
Curium hydroxide
Systematic IUPAC name
Curium(3+) oxidanide
Identifiers
3D model (JSmol)
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  • InChI=1S/Cm.3H2O/h;3*1H2/q+3;;;/p-3 checkY[EPA]
    Key: ZOFUDUXHUCRFKX-UHFFFAOYSA-K checkY[EPA]
  • [OH-].[OH-].[OH-].[Cm+3]
Properties
CmH3O3
Molar mass 298 g·mol−1
Appearance colorless or pale yellow solid
insoluble
Structure
hexagonal, UCl3 structure[1]
P63/m, No. 176[2]
a = 639,1 pm[2], c = 371,2 pm[2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Curium hydroxide in the bottom of a microcentrifuge cone, fall 1947

Curium hydroxide Cm(OH)3 is a radioactive compound first discovered in measurable quantities in 1947. It is composed of a single curium atom and three hydroxy groups. It was the first curium compound ever isolated.[3][4]

Curium hydroxide is an anhydrous colorless[2] or light-yellow[5] amorphous gelatinous solid that is insoluble in water.[1]

Due to self-irradiation, the crystal structure of 244Cm(OH)3 decomposes[clarification needed] within one day (244Cm has a half-life of 18.11 years); for 241Am(OH)3 the same process takes 4 to 6 months (241Am has a half-life of 432.2 years).[2]

See also

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References

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