Misplaced Pages

Yttrium oxalate

Names
Other names Yttrium(3+) oxalate, Diyttrium trioxalate
Identifiers
CAS Number	867-68-5
3D model (JSmol)	Interactive image
ChemSpider	144422
ECHA InfoCard	100.011.607
EC Number	212-767-0
PubChem CID	164745
CompTox Dashboard (EPA)	DTXSID401014690
InChI InChI=1S/3C2H2O4.H2O.2Y/c3*3-1(4)2(5)6;;;/h3*(H,3,4)(H,5,6);1H2;;/q;;;;2*+3/p-6Key: NRMHTSMZQQFBRX-UHFFFAOYSA-H
SMILES ..O=C()C()=O.C(=O)C()=O.C(=O)C()=O
Properties
Chemical formula	Y2(C2O4)3
Molar mass	441.87
Appearance	White crystals
Solubility in water	insoluble
Solubility product (Ksp)	5.1 × 10.
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H302+H312, H312
Precautionary statements	P264, P270, P280, P301+P312, P302+P352, P312, P322, P330, P363, P501
Related compounds
Related compounds	Calcium oxalate Sodium oxalate Magnesium oxalate Strontium oxalate Barium oxalate Iron(II) oxalate Iron(III) oxalate Lithium oxalate Praseodymium oxalate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references

Yttrium oxalate is an inorganic compound, a salt of yttrium and oxalic acid with the chemical formula Y₂(C₂O₄)₃. The compound does not dissolve in water and forms crystalline hydrates—colorless crystals.

Synthesis

Precipitation of soluble yttrium salts with oxalic acid:

${\displaystyle {\mathsf {2YCl_{3}+3H_{2}C_{2}O_{4}\ {\xrightarrow {}}\ Y_{2}(C_{2}O_{4})_{3}\downarrow +6HCl}}}$

Properties

Yttrium oxalate is highly insoluble in water and converts to the oxide when heated. Yttrium oxalate forms crystalline hydrates (colorless crystals) with the formula Y₂(C₂O₄)₃•n H₂O, where n = 4, 9, and 10.

Decomposes when heated:

${\displaystyle {\mathsf {Y_{2}(C_{2}O_{4})_{3}\ {\xrightarrow {700^{o}C}}\ Y_{2}O_{3}+3CO_{2}+3CO}}}$

The solubility product of yttrium oxalate at 25 °C is 5.1 × 10.

The trihydrate Y₂(C₂O₄)₃•3H₂O is formed by heating more hydrated varieties at 110 °C.

Y₂(C₂O₄)₃•2H₂O, which is formed by heating the decahydrate at 210 °C) forms monoclinic crystals with unit cell dimensions a=9.3811 Å, b=11.638 Å, c=5.9726 Å, β=96.079°.

Related

Several yttrium oxalate double salts are known containing additional cations. Also a mixed-anion compound with carbonate is known.

References

1. ^ Chung, Dong-Yong; Kim, Eung-Ho; Lee, Eil-Hee; Yoo, Jae-Hyung (1998). "Solubility of Rare Earth Oxalate in Oxalic and Nitric Acid Media". Journal of Industrial and Engineering Chemistry (in Korean). 4 (4): 277–284.
2. "Yttrium Oxalate | Diyttrium trioxalate | C6H18O21Y2". Ereztech. Retrieved 25 June 2021.
3. "Yttrium oxalate". National Institute of Standards and Technology. Retrieved 25 June 2021.
4. Feibush, A. M.; Rowley, Keith; Gordon, Louis (1958-10-01). "Solubility of Yttrium Oxalate". Analytical Chemistry. 30 (10): 1610–1612. doi:10.1021/ac60142a008. Retrieved 25 June 2021.
5. Yoon, Jung Hoon (1990). Precipitation of Yttrium and Rare Earth Powders from Aqueous Solutions and Emulsions. University of California, Berkeley. p. 54. Retrieved 25 June 2021.
6. "Yttrium Oxalate". American Elements. Retrieved 25 June 2021.
7. Moosath, S. S.; Abraham, John; Swaminathan, T. V. (August 1963). "Thermal Decomposition of Rare Earth Metal Oxalates. III. Oxalates of Holmium, Erbium, Thulium, Ytterbium, Lutetium and Yttrium". Zeitschrift für anorganische und allgemeine Chemie. 324 (1–2): 99–102. doi:10.1002/zaac.19633240112.
8. Louër, D.; Deneuve, F.; Ecochard, F. (June 1990). "Indexing of the Powder Diffraction Pattern of Yttrium Oxalate Dihydrate". Powder Diffraction. 5 (2): 104–105. Bibcode:1990PDiff...5..104L. doi:10.1017/S0885715600015438. S2CID 96385377.
9. McDonald, T. R. R.; Spink, J. M. (1967-12-10). "The crystal structure of a double oxalate of yttrium and ammonium, NH4Y(C2O4)2.H2O". Acta Crystallographica. 23 (6): 944–949. Bibcode:1967AcCry..23..944M. doi:10.1107/S0365110X67004104.
10. ^ Vaidhyanathan, R.; Natarajan, Srinivasan; Rao, C. N. R. (January 2001). "Three-Dimensional Yttrium Oxalates Possessing Large Channels". Chemistry of Materials. 13 (1): 185–191. doi:10.1021/cm000419o. ISSN 0897-4756.
11. Genčova, O.; Šiftar, J. (1994). "Synthesis and Thermal Analysis of Double Oxalates of Rare Earths (III) with the Pyridinium Cation". Bulletin of the Chemists and Technologists of Macedonia. 13: 25–28.
12. Bataille, T.; Louër, D. (1999-11-15). "Yttrium sodium oxalate tetrahydrate, [Y(H 2 O)]Na(C 2 O 4 ) 2 . 3H 2 O". Acta Crystallographica Section C: Crystal Structure Communications. 55 (11): 1760–1762. Bibcode:1999AcCrC..55.1760B. doi:10.1107/S0108270199009683. S2CID 93288364.
13. Bataille, T.; Auffrédic, J.-P.; Louër, D. (January 2000). "A Powder Diffraction Study of the Crystal Structure and the Dehydration Process of Yttrium Potassium Oxalate Tetrahydrate". Materials Science Forum. 321–324: 976–981. doi:10.4028/www.scientific.net/MSF.321-324.976. S2CID 98146305.
14. Zhang, Xingjing; Xing, Yongheng; Wang, Chunguang; Han, Jing; Li, Jing; Ge, Maofa; Zeng, Xiaoqing; Niu, Shuyun (March 2009). "Lanthanide–alkali metals–oxalates coordination polymers: Synthesis and structures of ·2H2O, Nd(C2O4)(CH3COO)(H2O), KLn(C2O4)2(H2O)4 (Ln=Y, Tb)". Inorganica Chimica Acta. 362 (4): 1058–1064. doi:10.1016/j.ica.2008.05.029.
15. Bataille, Thierry; Auffrédic, Jean-Paul; Louër, Daniel (2000). "Crystal structure and thermal behaviour of the new layered oxalate Y(H2O)Cs(C2O4)2 studied by powder X-ray diffraction". Journal of Materials Chemistry. 10 (7): 1707–1711. doi:10.1039/b001201g.
16. Genčova, O.; šiftar, J. (April 1997). "Synthesis and dehydration of double oxalates of rare earths(III) with some monovalent metals: II. Investigations of RbLn(C2O4)2·nH2O". Journal of Thermal Analysis. 48 (4): 877–884. doi:10.1007/bf01997192. S2CID 95932914.
17. Bataille, Thierry; Louër, Daniel (2000-12-01). "Powder and single-crystal X-ray diffraction study of the structure of 2 (C 2 O 4 )(CO 3 ) 2". Acta Crystallographica Section B: Structural Science. 56 (6): 998–1002. doi:10.1107/S0108768100010004. PMID 11099966.

• Inorganic compounds
• Yttrium compounds
• Oxalates