Terbium(III) oxide

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Terbium(III) oxide
Tl2O3structure.jpg
Names
IUPAC name
terbium(III) oxide
Other names
terbium trioxide, terbia, terbium sesquioxide
Identifiers
12036-41-8 YesY
EC Number 234-849-5
Jmol 3D model Interactive image
PubChem 159410
  • InChI=1/3O.2Tb/q3*-2;2*+3
  • [O-2].[O-2].[O-2].[Tb+3].[Tb+3]
Properties
O3Tb2
Molar mass 365.85 g·mol−1
Appearance white crystals
Density 7.91 g/cm3
Melting point 2,410 °C (4,370 °F; 2,680 K)
0.07834 cm3/mol
Structure
Cubic, cI80
Ia-3, No. 206[1]
Vapor pressure {{{value}}}
Related compounds
Other anions
Terbium(III) chloride
Other cations
Gadolinium(III) oxide
Dysprosium(III) oxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
YesY verify (what is YesYN ?)
Infobox references

Terbium(III) oxide, also known as terbium sesquioxide, is a sesquioxide of the rare earth metal terbium, having chemical formula Tb
2
O
3
. It is a p-type semiconductor when doped with calcium,[2] and may be prepared by the reduction of Tb
4
O
7
in hydrogen at 1300 °C for 24 hours.[3]

It is a p-type semiconductor.[4]

It is a basic oxide and easily dissolved to dilute acids, and then almost colourless terbium salt is formed.

Tb2O3 + 6 H+ → 2 Tb3+ + 3 H2O

The crystal structure is cubic and the lattice constant is a = 1057 pm.[5]

References

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  5. N. C. Baenzinger, H. A. Eick, H. S. Schuldt, L. Eyring: Terbium Oxides. III. X-Ray Diffraction Studies of Several Stable Phases. In: Journal of the American Chemical Society, 1961, 83, 10, S. 2219-23.


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