Thulium(III) oxide

Thulium(III) oxide
Thulium(III) oxide
Names
IUPAC name
Thulium(III) oxide
Other names
Thulium oxide, thulium sesquioxide
Identifiers
3D model (JSmol)
ECHA InfoCard 100.031.670 Edit this at Wikidata
EC Number
  • 234-851-6
UNII
  • InChI=1S/3O.2Tm/q3*-2;2*+3
  • [O-2].[O-2].[O-2].[Tm+3].[Tm+3]
Properties
Tm2O3
Molar mass 385.866 g/mol
Appearance greenish-white cubic crystals
Density 8.6 g/cm3
Melting point 2,341 °C (4,246 °F; 2,614 K)
Boiling point 3,945 °C (7,133 °F; 4,218 K)
Solubility Slightly soluble in acids
+51,444·10−6 cm3/mol
Structure
Cubic, cI80[1]
Ia-3, No. 206[1]
a = 10.49 Å[1]
16[1]
Thermochemistry
2.515 °Cp[2] (25 °C)
Hazards
GHS labelling:
GHS07: Exclamation mark
Safety data sheet (SDS) Sigma-Aldrich
Related compounds
Other anions
Thulium(III) chloride
Other cations
Erbium(III) oxide
Ytterbium(III) oxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Thulium(III) oxide is a pale green crystalline compound, with the formula Tm2O3. It was first isolated in 1879, from an impure sample of erbia, by Swedish chemist Per Teodor Cleve, who named it thulia.

  1. ^ a b c d Cite error: The named reference Lee was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference Justice was invoked but never defined (see the help page).