Neodymium(III) oxalate

Neodymium(III) oxalate is the oxalate salt of neodymium, with the chemical formula of Nd₂(C₂O₄)₃ in the anhydrous or hydrate form. Its decahydrate decomposes to the anhydrous form when heated, and when heated further, decomposes to Nd₂O₂C₂O₄,^[2] finally obtaining neodymium(III) oxide.^[3] It dissolves in hydrochloric acid to form Nd(C₂O₄)Cl·3H₂O.^[4]

Neodymium(III) oxalate

Names
IUPAC names Neodymium(III) oxalate Neodymium trioxalate
Other names Neodymium oxalate
Identifiers
CAS Number	1186-50-1 Y
3D model (JSmol)	Interactive image
ChemSpider	144468
ECHA InfoCard	100.013.357
EC Number	214-692-9
PubChem CID	164794
CompTox Dashboard (EPA)	DTXSID30920646
InChI InChI=1S/3C2H2O4.2Nd/c3*3-1(4)2(5)6;;/h3*(H,3,4)(H,5,6);;/q;;;2*+3/p-6 Key: VKLDOHAGZQSOPP-UHFFFAOYSA-H
SMILES [Nd+3].[Nd+3].[O-]C(=O)C(=O)[O-].[O-]C(=O)C(=O)[O-].[O-]C(=O)C(=O)[O-]
Properties
Chemical formula	Nd2(C2O4)3
Appearance	rose-coloured crystal[1]
Density	3.9 g·cm−3 (hexahydrate)
Solubility in water	insoluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

References

1. 草酸钕. 物竞数据库. [2020-10-11]
2. Gunther, Paul L.; Rehaag, Hildegard. The thermal decomposition of oxalates. I. The formation of peroxides by the thermal decomposition of oxalates in a vacuum. Berichte der Deutschen Chemischen Gesellschaft [Abteilung] B: Abhandlungen. 1938. 71B: 1771-1777. ISSN: 0365-9488.
3. Wendlandt, W. W. (1959). "Thermal Decomposition of Rare Earth Metal Oxalates". Analytical Chemistry. 31 (3): 408–410. doi:10.1021/ac60147a024. ISSN 0003-2700.
4. Moebius, R.; Matthes, F. The exchange of oxalate ions for chloride ions of the oxalate hydrates of the rare earths and yttrium. Zeitschrift für Chemie, 1964. 4 (6): 234-235. ISSN: 0044-2402.