Thulium(III) oxide

Thulium(III) oxide
Names
	IUPAC name Thulium(III) oxide
	Other names Thulium oxide, thulium sesquioxide
Identifiers
CAS Number	12036-44-1 ;
3D model (JSmol)	Interactive image;
ECHA InfoCard	100.031.670
EC Number	234-851-6;
PubChem CID	159411;
UNII	DZJ5EE05EB ;
CompTox Dashboard (EPA)	DTXSID50894774 ;
	InChI InChI=1S/3O.2Tm/q3-2;2+3;
	SMILES [O-2].[O-2].[O-2].[Tm+3].[Tm+3];
Properties
Chemical formula	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
Magnetic susceptibility (χ)	+51,444·10−6 cm3/mol
Structure
Crystal structure	Cubic, cI80
Space group	Ia-3, No. 206
Lattice constant	a = 10.49 Å
Formula units (Z)	16
Thermochemistry
Heat capacity (C)	2.515 °Cp (25 °C)
Hazards
	GHS labelling:
Pictograms
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). verify (what is ?) Infobox references

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.

Quick Facts Names, Identifiers ...

Close

Thulium(III) oxide has been made in the laboratory using various methods. One method involves burning thulium metal or its various salts in air.^[3]^[2]

Thulium(III) oxide can be made using a hydrothermal method where thulium(III) acetate is mixed with an ammonia solution, which causes thulium(III) oxide to precipitate as a white solid.^[1]

Thulium(III) oxide (Tm₂O₃) is a pale green, thermally stable powder with a high melting point of 2,341 °C and a density of 8.6 g/cm³, typically forming a cubic crystal structure.^[4] It is resistant to oxidation and dissolves in strong acids like hydrochloric acid, allowing it to form soluble thulium salts.^[5] Due to its unique f-electron configuration, Tm₂O₃ has notable optical properties.^[6] Thulium oxide (Tm₂O₃) is considered fibrogenic; it has the potential to induce tissue injury and fibrosis when inhaled or otherwise introduced to biological tissue.^[7]

Remove ads

[1]
Lee, Sung Woo; Park, Seong Kyun; Min, Bong-Ki; Kang, Jun-Gill; Sohn, Youngku (July 2014). "Structural/spectroscopic analyses and H2/O2/CO responses of thulium(III) oxide nanosquare sheets". Applied Surface Science. 307: 736–743. doi:10.1016/j.apsusc.2014.04.149.
[2]
Justice, Bruce; Westrum, Edgar; Chang, Elfreda; Radebaugh, Ray (February 1, 1969). "Thermophysical properties of the lanthanide oxides. IV. Heat capacities and thermodynamic properties of thulium(III) and lutetium(III) oxides. Electronic energy levels of several lanthanide(III) ions". Journal of Physical Chemistry. 2 (73): 333–340. doi:10.1021/j100722a010 – via ACSPublications.
[3]
Catherine E. Housecroft; Alan G. Sharpe (2008). "Chapter 25: The f-block metals: lanthanoids and actinoids". Inorganic Chemistry, 3rd Edition. Pearson. p. 864. ISBN 978-0-13-175553-6.
[4]
Loewen, Eric. "Thulium Oxide: Properties and Applications of This Rare Earth Compound". Standford Advanced Materials. Retrieved Oct 30, 2024.
[5]
Mitrovic, I.Z.; Hall, S (2015). "Atomic-layer deposited thulium oxide as a passivation layer on germanium" (PDF). Journal of Applied Physics. 117 (21): 21404. doi:10.1063/1.4922121.
[6]
Chaneliere, T; Ruggiero, J (2008). "Tm3+:Y2⁢O3 investigated for a quantum light storage application". Physical Review B. 77 (24): 245127. doi:10.1103/PhysRevB.77.245127.
[7]
"PubChem Compound Summary for CID 159411, Thulium oxide". National Center for Biotechnology Information. 2024. Retrieved Oct 30, 2024.

Remove ads

[Lee-1] [1]
Lee, Sung Woo; Park, Seong Kyun; Min, Bong-Ki; Kang, Jun-Gill; Sohn, Youngku (July 2014). "Structural/spectroscopic analyses and H2/O2/CO responses of thulium(III) oxide nanosquare sheets". Applied Surface Science. 307: 736–743. doi:10.1016/j.apsusc.2014.04.149.

[Justice-2] [2]
Justice, Bruce; Westrum, Edgar; Chang, Elfreda; Radebaugh, Ray (February 1, 1969). "Thermophysical properties of the lanthanide oxides. IV. Heat capacities and thermodynamic properties of thulium(III) and lutetium(III) oxides. Electronic energy levels of several lanthanide(III) ions". Journal of Physical Chemistry. 2 (73): 333–340. doi:10.1021/j100722a010 – via ACSPublications.

[Housecroft-3] [3]
Catherine E. Housecroft; Alan G. Sharpe (2008). "Chapter 25: The f-block metals: lanthanoids and actinoids". Inorganic Chemistry, 3rd Edition. Pearson. p. 864. ISBN 978-0-13-175553-6.

[4] [4]
Loewen, Eric. "Thulium Oxide: Properties and Applications of This Rare Earth Compound". Standford Advanced Materials. Retrieved Oct 30, 2024.

[5] [5]
Mitrovic, I.Z.; Hall, S (2015). "Atomic-layer deposited thulium oxide as a passivation layer on germanium" (PDF). Journal of Applied Physics. 117 (21): 21404. doi:10.1063/1.4922121.

[6] [6]
Chaneliere, T; Ruggiero, J (2008). "Tm3+:Y2⁢O3 investigated for a quantum light storage application". Physical Review B. 77 (24): 245127. doi:10.1103/PhysRevB.77.245127.

[7] [7]
"PubChem Compound Summary for CID 159411, Thulium oxide". National Center for Biotechnology Information. 2024. Retrieved Oct 30, 2024.

[1]

[2]

[3]

[4]

[5]

[6]

[7]

Thulium(III) oxide

Wikiwand in your browser!

Synthesis

Properties

References