Terbium(III) oxalate

Terbium(III) oxalate
Identifiers
CAS Number	996-33-8 ;
3D model (JSmol)	Interactive image;
ChemSpider	144445;
EC Number	213-632-9;
PubChem CID	164770;
CompTox Dashboard (EPA)	DTXSID30931030 ;
	InChI InChI=1S/3C2H2O4.2Tb/c33-1(4)2(5)6;;/h3(H,3,4)(H,5,6);;/q;;;2*+3/p-6 Key: JZNKXIAEFQDQDF-UHFFFAOYSA-H;
	SMILES [Tb+3].[Tb+3].[O-]C(=O)C(=O)[O-].[O-]C(=O)C(=O)[O-].[O-]C(=O)C(=O)[O-];
Properties
Chemical formula	Tb2(C2O4)3
Appearance	white solid, green under ultraviolet light (decahydrate)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H302, H312, H318
Precautionary statements	P264, P264+P265, P270, P280, P301+P317, P302+P352, P305+P354+P338, P317, P321, P330, P362+P364, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Terbium(III) oxalate is the oxalate of terbium with the chemical formula Tb₂(C₂O₄)₃. Its decahydrate can be obtained by reacting terbium(III) chloride and oxalic acid in an aqueous solution.^[1] Its decahydrate gradually loses water when heated and becomes anhydrous. Continued heating obtains terbium(III,IV) oxide.^[3] It decomposes in isolation from air to form terbium(III) oxide. The decomposed gas products are carbon monoxide and carbon dioxide.^[1] It reacts with hydrochloric acid to obtain H[Tb(C₂O₄)₂]·6H₂O.^[4]

References

^ ^a ^b ^c Alexander, Dinu; Thomas, Kukku; Sisira, S.; Biju, P.R.; Unnikrishnan, N.V.; Ittyachen, M.A.; Joseph, Cyriac (January 2018). "Synthesis and optical characterization of sub-5 nm Terbium oxalate nanocrystals: A novel intense green emitting phosphor". Dyes and Pigments. 148: 386–393. doi:10.1016/j.dyepig.2017.09.029.
^ "Diterbium trioxalate". pubchem.ncbi.nlm.nih.gov. Retrieved 7 March 2024.
^ Wendlandt, W. W. (1959). "Thermal Decomposition of Rare Earth Metal Oxalates". Analytical Chemistry. 31 (3): 408–410. doi:10.1021/ac60147a024. ISSN 0003-2700.
^ Moebius, R.; Matthes, F. The exchange of oxalate ions for chloride ions of the oxalate hydrates of the rare earths and yttrium. Zeitschrift fuer Chemie, 1964. 4 (6): 234-235. ISSN: 0044-2402.