草酸鐠

草酸鐠是鐠的草酸鹽，化學式為Pr₂(C₂O₄)₃，存在無水物和水合物。它的十水合物受熱分解得到無水物，繼續加熱得到氧化鐠。^[1]草酸鐠在空氣中加熱分解，可以得到深棕色的十一氧化六鐠。^[2]它在氧氣氣氛中加熱，能夠檢測到Pr(C₂O₄)₂的生成。^[3]它和鹽酸反應得到Pr(C₂O₄)Cl·3H₂O。^[4]

草酸鐠
識別
CAS號	3269-10-1  Y
SMILES	[Pr+3].[Pr+3].[O-]C(=O)C(=O)[O-].[O-]C(=O)C(=O)[O-].[O-]C(=O)C(=O)[O-]
性質
化學式	Pr2(C2O4)3
外觀	淺綠色晶體
若非註明，所有數據均出自標準狀態（25 ℃，100 kPa）下。

參考文獻

1. Wendlandt, W. W. Thermal Decomposition of Rare Earth Metal Oxalates. Analytical Chemistry. 1959, 31 (3): 408–410. ISSN 0003-2700. doi:10.1021/ac60147a024.
2. Sveda, Josef. The rare earths. [The oxidation of the oxalates of praseodymium and neodymium]. Casopis Ceskoslovenskeho Lekarnictva, 1927. 7. 226-232. CODEN: CCLEA3.
3. Pajakoff, Swetoslaw. Tetravalent compounds of praseodymium. V. Formation of praseodymium (IV) oxalate by the thermal decomposition of praseodymium(III) oxalate in an oxygen atmosphere and application of this effect in the separation of rare earth metals. Monatshefte fuer Chemie, 1968. 99 (2): 484-500. CODEN: MOCHAP.
4. 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.