Wikipedia

Yttrium oxalate

Yttrium oxalate is an inorganic compound, a salt of yttrium and oxalic acid with the chemical formula Y2(C2O4)3.[3] The compound does not dissolve in water and forms crystalline hydrates—colorless crystals.[4]

Yttrium oxalate
Names
Other names
Yttrium(3+) oxalate, Diyttrium trioxalate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.011.607 Edit this at Wikidata
EC Number
  • 212-767-0
  • InChI=1S/3C2H2O4.H2O.2Y/c3*3-1(4)2(5)6;;;/h3*(H,3,4)(H,5,6);1H2;;/q;;;;2*+3/p-6
    Key: NRMHTSMZQQFBRX-UHFFFAOYSA-H
  • [Y+3].[Y+3].O=C([O-])C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O
Properties
Y2(C2O4)3
Molar mass 441.87
Appearance White crystals
insoluble
5.1 × 10−30.[1]
Hazards
GHS labelling:
GHS07: Exclamation mark
Warning
H302, H302+H312, H312[2]
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 [77 °F], 100 kPa).

Synthesis

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Precipitation of soluble yttrium salts with oxalic acid:[5]

 

Properties

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Yttrium oxalate is highly insoluble in water and converts to the oxide when heated.[6] Yttrium oxalate forms crystalline hydrates (colorless crystals) with the formula Y2(C2O4)3•n H2O, where n = 4, 9, and 10.

Decomposes when heated:

 

The solubility product of yttrium oxalate at 25 °C is 5.1 × 10−30.[1]

The trihydrate Y2(C2O4)3•3H2O is formed by heating more hydrated varieties at 110 °C.[7]

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°.[8]

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

formula name formula weight crystal form space group unit cell Å volume Å3 properties references
NH4Y(C2O4)2.H2O Ammonium yttrium oxalate monohydrate monoclinic P2/n a=9.18 b=6.09 c=7.89 β=90.2 Z=2 [9]
[C6N2H16]0.5[Y(H2O)(C2O4)2]·2H2O 377.1 triclinic P1 a = 8.229, b = 9.739, c = 9.754, α = 60.74, β = 72.36, γ = 84.67°, Z = 2 648.5 density 1.931 [10]
[C5N2H12] [Y(C2O4)2] 365.1 monoclinic Cc a = 11.552, b = 17.168, c = 8.719, β = 130.64°, Z = 2 1312.1 density 1.848 [10]
C5NH6Y(C2O4)2•3H2O Pyridinium yttrium oxalate trihydrate [11]
[Y(H2O)]Na(C2O4)2.3H2O yttrium sodium oxalate tetrahydrate 360.005 monoclinic Pc a=8.623 b=8.6310 c=14.896 β=102.848 Z=4 1080.9 [12]
YK(C2O4)2.4H2O Yttrium potassium oxalate tetrahydrate tetragonal I41/a Z = 4 a = 11.4612, c = 8.9040 1169.6 [13][14]
Y(H2O)Cs(C2O4)2 Caesium yttrium oxalate monohydrate monoclinic P2/n a = 8.979, b = 6.2299, c = 8.103, β = 90.05° 453.3 [15]
RbLn(C2O4)2•3H2O Rubidium yttrium oxalate trihydrate [16]
[Y(H2O)]2(C2O4)(CO3)2 yttrium oxalate carbonate 421.876 orthorhombic C2221 a = 7.8177, b = 14.943, c = 9.4845, Z = 4 1108.0 density 2.526 [17]

References

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  1. ^ a b 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. ^ a b 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 [Nd(C2O4)1.5(H2O)3]·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 [Y(H 2 O)] 2 (C 2 O 4 )(CO 3 ) 2". Acta Crystallographica Section B: Structural Science. 56 (6): 998–1002. doi:10.1107/S0108768100010004. PMID 11099966.
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