Terbium(III) oxalate

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]

Terbium(III) oxalate

Identifiers
CAS Number	996-33-8 Y
3D model (JSmol)	Interactive image
ChemSpider	144445
EC Number	213-632-9
PubChem CID	164770
CompTox Dashboard (EPA)	DTXSID30931030
InChI InChI=1S/3C2H2O4.2Tb/c3*3-1(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)[1]
Hazards
GHS labelling:[2]
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
Related compounds
Other cations	Cerium(III) oxalate Europium(III) oxalate Gadolinium(III) oxalate Holmium(III) oxalate Lanthanum(III) oxalate Neodymium(III) oxalate Praseodymium(III) oxalate Promethium(III) oxalate Samarium(III) oxalate Thulium(III) oxalate Ytterbium(III) oxalate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references