Terbium(III) oxide

Names
IUPAC name

terbium(III) oxide

Other names

terbium trioxide, terbia, terbium sesquioxide

Identifiers

CAS Number

* 12036-41-8 Y

3D model (JSmol)

* Interactive image

EC Number |

* 234-849-5

PubChem CID

* 159410

InChI

* InChI=1/3O.2Tb/q3*-2;2*+3

SMILES

* [O-2].[O-2].[O-2].[Tb+3].[Tb+3]

Properties

Chemical formula

| O3Tb2
Molar mass | 365.848 g·mol−1
Appearance  | white crystals
Density | 7.91 g/cm3
Melting point |  2,410 °C (4,370 °F; 2,680 K)

Magnetic susceptibility (χ)

| 0.07834 cm3/mol
Structure

Crystal structure

| Cubic, cI80

Space group

| Ia3, No. 206[1]

Lattice constant

a = 1.057 nm

Thermochemistry

Std molar
entropy (S ~~o~~ 298)

| 156.90 J/mol·K [2]

Std enthalpy of
formation (ΔfH⦵298)

| -1865.23 kJ/mol [2]

Gibbs free energy (ΔfG˚)

| -1776.553 kJ/mol [2]
Hazards
GHS pictograms |
GHS Signal word | Warning

GHS hazard statements

| H319, H400, H410

GHS precautionary statements

| P264, P273, P280, P305+351+338, P337+313, P391, P501
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).

Y verify (what is YN ?)
Infobox references

Terbium(III) oxide, also known as terbium sesquioxide, is a sesquioxide of the rare earth metal terbium, having chemical formula Tb2O3. It is a p-type semiconductor, which conducts protons, which is enhanced when doped with calcium.[3] It may be prepared by the reduction of Tb4O7 in hydrogen at 1300 °C for 24 hours.[4]

7 \+ H
2 → 2 Tb

3 \+ H

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

1. ↑ Curzon A.E.; Chlebek H.G. (1973). "The observation of face centred cubic Gd, Tb, Dy, Ho, Er and Tm in the form of thin films and their oxidation". J. Phys. F 3 (1): 1–5. doi:10.1088/0305-4608/3/1/009.
2. ↑ 2.0 2.1 2.2 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.[1]
3. ↑ Reidar Haugsrud; Yngve Larring; Truls Norby (December 2005). "Proton conductivity of Ca-doped Tb2O3". Solid State Ionics (Elsevier B.V.) 176 (39-40): 2957-2961. doi:10.1016/j.ssi.2005.09.030.Tb2O3&rft.jtitle=Solid+State+Ionics&rft.aulast=Reidar+Haugsrud&rft.au=Reidar+Haugsrud&rft.au=Yngve+Larring&rft.au=Truls+Norby&rft.date=December+2005&rft.volume=176&rft.issue=39-40&rft.pages=2957-2961&rft.pub=Elsevier+B.V.&rft_id=info:doi/10.1016/j.ssi.2005.09.030&rfr_id=info:sid/en.wikibooks.org:Chemistry:Terbium(III)_oxide">
4. ↑ G. J. McCarthy (October 1971). "Crystal data on C-type terbium sesquioxide (Tb2O3)". Journal of Applied Crystallography 4 (5): 399-400. doi:10.1107/S0021889871007295.Tb2O3)&rft.jtitle=Journal+of+Applied+Crystallography&rft.aulast=G.+J.+McCarthy&rft.au=G.+J.+McCarthy&rft.date=October+1971&rft.volume=4&rft.issue=5&rft.pages=399-400&rft_id=info:doi/10.1107/S0021889871007295&rfr_id=info:sid/en.wikibooks.org:Chemistry:Terbium(III)_oxide">
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.

* v
* t
* e

Terbium compounds

Terbium(III)|

* TbBr3
* TbCl3
* TbF3
* TbI3
* Tb(NO3)3
* Tb2O3

Terbium(III,IV)|

* Tb4O7

Terbium(IV)|

* TbSi2
* TbO2
* TbF4

* v
* t
* e

Oxides

Mixed oxidation states|

* Antimony tetroxide (Sb2O4)
* Cobalt(II,III) oxide (Co3O4)
* Europium(II,III) oxide (Eu3O4)
* Iron(II,III) oxide (Fe<sub>3O4)
* Lead(II,IV) oxide (Pb3O4)
* Manganese(II,III) oxide (Mn3O4)
* Silver(I,III) oxide (Ag2O2)
* Triuranium octoxide (U3O8)
* Carbon suboxide (C3O2)
* Mellitic anhydride (C12O9)
* [[Chemistry:Praseodymium(III,IV) Praseodymium(III,IV) oxide]] (Pr6O11)
* Terbium(III,IV) oxide (Tb4O7)

+1 oxidation state|

* Copper(I) oxide (Cu<sub>2O)
* Caesium oxide (Cs2O)
* Dicarbon monoxide (C2O)
* Dichlorine monoxide (Cl2O)
* Gallium(I) oxide (Ga2O)
* Lithium oxide (Li2O)
* Potassium oxide (K2O)
* Rubidium oxide (Rb2O)
* Silver oxide (Ag2O)
* Thallium(I) oxide (Tl2O)
* Sodium oxide (Na2O)
* Water (hydrogen oxide) (H2O)

+2 oxidation state|

* Aluminium(II) oxide (AlO)
* Barium oxide (BaO)
* Beryllium oxide (BeO)
* Cadmium oxide (CdO)
* Calcium oxide (CaO)
* Carbon monoxide (CO)
* Chromium(II) oxide (CrO)
* Cobalt(II) oxide (CoO)
* Copper(II) oxide (CuO)
* Europium(II) oxide (EuO)
* Germanium monoxide (GeO))
* Iron(II) oxide (FeO)
* Lead(II) oxide (PbO)
* Magnesium oxide (MgO)
* Manganese(II) oxide (MnO)
* Mercury(II) oxide (HgO)
* Nickel(II) oxide (NiO)
* Nitric oxide (NO)
* Palladium(II) oxide (PdO)
* Silicon monoxide (SiO)
* Strontium oxide (SrO)
* Sulfur monoxide (SO)
* Disulfur dioxide (S2O2)
* Thorium monoxide (ThO)
* Tin(II) oxide (SnO)
* Titanium(II) oxide (TiO)
* Vanadium(II) oxide (VO)
* Zinc oxide (ZnO)

+3 oxidation state|

* Aluminium oxide (Al<sub>2O3)
* Antimony trioxide (Sb2O3)
* Arsenic trioxide (As2O3)
* Bismuth(III) oxide (Bi2O3)
* Boron trioxide (B2O3)
* Cerium(III) oxide (Ce2O3)
* Dibromine trioxide (Br2O3)
* Chromium(III) oxide (Cr2O3)
* Dinitrogen trioxide (N2O3)
* Dysprosium(III) oxide (Dy2O3)
* Erbium(III) oxide (Er2O3)
* Europium(III) oxide (Eu2O3)
* Gadolinium(III) oxide (Gd2O3)
* Gallium(III) oxide (Ga2O3)
* Holmium(III) oxide (Ho2O3)
* Indium(III) oxide (In<sub>2O3)
* Iron(III) oxide (Fe2O3)
* Lanthanum oxide (La2O3)
* Lutetium(III) oxide (Lu2O3)
* Manganese(III) oxide (Mn2O3)
* Neodymium(III) oxide (Nd2O3)
* Nickel(III) oxide (Ni2O3)
* Phosphorus trioxide (P4O6)
* Praseodymium(III) oxide (Pr2O3)
* Promethium(III) oxide (Pm2O3)
* Rhodium(III) oxide (Rh2O3)
* [[Chemistry:Samarium(III) Samarium(III) oxide]] (Sm2O3)
* Scandium oxide (Sc2O3)
* Terbium(III) oxide (Tb2O3)
* Thallium(III) oxide (Tl2O3)
* Thulium(III) oxide (Tm2O3)
* Titanium(III) oxide (Ti2O3)
* Tungsten(III) oxide (W2O3)
* Vanadium(III) oxide (V2O3)
* Ytterbium(III) oxide (Yb2O3)
* Yttrium(III) oxide (Y2O3)

+4 oxidation state|

* Americium dioxide (AmO2)
* Carbon dioxide (CO2)
* Carbon trioxide (CO3)
* Cerium(IV) oxide (CeO2)
* Chlorine dioxide (ClO2)
* Chromium(IV) oxide (CrO<sub>2)
* Dinitrogen tetroxide (N2O4)
* Germanium dioxide (GeO<sub>2)
* [[Chemistry:Hafnium(IV) Hafnium(IV) oxide]] (HfO2)
* Lead dioxide (PbO2)
* Manganese dioxide (MnO2)
* Neptunium(IV) oxide (NpO2)
* Nitrogen dioxide (NO2)
* Osmium dioxide (OsO2)
* Plutonium(IV) oxide (PuO2)
* Praseodymium(IV) oxide (PrO2)
* Protactinium(IV) oxide (PaO2)
* Rhodium(IV) oxide (RhO2)
* Ruthenium(IV) oxide (RuO<sub>2)
* Selenium dioxide (SeO2)
* Silicon dioxide (SiO2)
* Sulfur dioxide (SO2)
* Tellurium dioxide (TeO<sub>2)
* [[Chemistry:Terbium(IV) Terbium(IV) oxide]] (TbO2)
* Thorium dioxide (ThO2)
* Tin dioxide (SnO2)
* Titanium dioxide (TiO<sub>2)
* Tungsten(IV) oxide (WO2)
* Uranium dioxide (UO2)
* Vanadium(IV) oxide (VO2)
* Zirconium dioxide (ZrO2)

+5 oxidation state|

* Antimony pentoxide (Sb2O5)
* Arsenic pentoxide (As2O5)
* Dinitrogen pentoxide (N2O5)
* Niobium pentoxide (Nb2O5)
* Phosphorus pentoxide (P2O5)
* Protactinium(V) oxide (Pa2O5)
* Tantalum pentoxide (Ta2O5)
* Vanadium(V) oxide (V2O5)

+6 oxidation state|

* Chromium trioxide (CrO3)
* Molybdenum trioxide (MoO3)
* Rhenium trioxide (ReO3)
* Selenium trioxide (SeO3)
* Sulfur trioxide (SO3)
* Tellurium trioxide (TeO3)
* Tungsten trioxide (WO3)
* Uranium trioxide (UO3)
* Xenon trioxide (XeO3)
* Iridium trioxide (IrO3)

+7 oxidation state|

* Dichlorine heptoxide (Cl2O7)
* Manganese heptoxide (Mn2O7)
* [[Chemistry:Rhenium(VII) Rhenium(VII) oxide]] (Re2O7)
* Technetium(VII) oxide (Tc2O7)

+8 oxidation state|

* Osmium tetroxide (OsO4)
* Ruthenium tetroxide (RuO4)
* Xenon tetroxide (XeO4)
* Iridium tetroxide (IrO4)
* Hassium tetroxide (HsO4)

Related|

* Oxocarbon
* Suboxide
* Oxyanion
* Ozonide
* Peroxide
* Superoxide

Oxides are sorted by oxidation state. Category:Oxides

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*[CID]: Compound ID
*[H319]: Causes serious eye irritation
*[H400]: Very toxic to aquatic life
*[H410]: Very toxic to aquatic life with long lasting effects
*[P264]: Wash … thoroughly after handling
*[P273]: Avoid release to the environment
*[P280]: Wear protective gloves/protective clothing/eye protection/face protection
*[P305+351+338]: IF IN EYES: Rinse continuously with water for several minutes. Remove contact lenses if present and easy to do – continue rinsing
*[P337+313]: Get medical advice/attention
*[P391]: Collect spillage
*[P501]: Dispose of contents/container to …
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