Ytterbium(III) oxide

Ytterbium(III) oxide is the chemical compound with the formula Yb2O3. It is one of the more commonly encountered compounds of ytterbium. It has the "rare-earth C-type sesquioxide" structure which is related to the fluorite structure with one quarter of the anions removed, leading to ytterbium atoms in two different six coordinate (non-octahedral) environments.[2]

Ytterbium(III) oxide
Names
IUPAC name
Ytterbium(III) oxide.
Other names
Ytterbia
diytterbium trioxide
ytterbium sesquioxide
Identifiers
ECHA InfoCard 100.013.850
UNII
Properties
Yb2O3
Molar mass 394.08 g/mol
Appearance White solid.
Density 9.17 g/cm3, solid.
Melting point 2,355 °C (4,271 °F; 2,628 K)
Boiling point 4,070 °C (7,360 °F; 4,340 K)
Insoluble
Structure
Cubic
Octahedral
Thermochemistry
133.05 J/mol·K [1]
Std enthalpy of
formation (ΔfH⦵298)
 -1814.600 kJ/mol [1]
-1726.844 kJ/mol [1]
Hazards
None listed.
R-phrases (outdated) None listed.
S-phrases (outdated) None listed.
NFPA 704 (fire diamond)
Flammability code 0: Will not burn. E.g. waterHealth code 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineReactivity code 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calciumSpecial hazards (white): no code
0
1
1
Flash point Non-flammable.
Related compounds
Other anions
 Ytterbium(III) sulfide, Ytterbium(III) chloride
Other cations
 Thulium(III) oxide
Lutetium(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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Infobox references

Uses
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See also

References
  1. R. Robie, B. Hemingway, and J. Fisher, “Thermodynamic Properties of Minerals and Related Substances at 298.15K and 1bar Pressure and at Higher Temperatures,” US Geol. Surv., vol. 1452, 1978.
  2. Wells A.F. (1984) Structural Inorganic Chemistry 5th edition Oxford Science Publications ISBN 0-19-855370-6
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