Curium(III) hydroxide

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

Curium(III) hydroxide Curium hydroxide
Names
IUPAC name Curium hydroxide
Systematic IUPAC name Curium(3+) oxidanide
Identifiers
CAS Number	49848-26-2 N[EPA]
3D model (JSmol)	Interactive image
PubChem CID	14648287
CompTox Dashboard (EPA)	DTXSID101311287
InChI InChI=1S/Cm.3H2O/h;3*1H2/q+3;;;/p-3 Y[EPA] Key: ZOFUDUXHUCRFKX-UHFFFAOYSA-K Y[EPA]
SMILES [OH-].[OH-].[OH-].[Cm+3]
Properties
Chemical formula	CmH3O3
Molar mass	298 g·mol−1
Appearance	colorless or pale yellow solid
Solubility in water	insoluble
Structure
Crystal structure	hexagonal, UCl3 structure[1]
Space group	P63/m, No. 176[2]
Lattice constant	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). N verify (what is YN ?) Infobox references

Curium hydroxide in the bottom of a microcentrifuge cone, fall 1947

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

• Curium(III) oxide