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Names | |
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Other names
Yttrium(3+) oxalate, Diyttrium trioxalate
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Identifiers | |
3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.011.607 |
EC Number |
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PubChem CID
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CompTox Dashboard (EPA)
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Properties | |
Y2(C2O4)3 | |
Molar mass | 441.87 |
Appearance | White crystals |
insoluble | |
Solubility product (Ksp)
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5.1 × 10−30.[1] |
Hazards | |
GHS labelling: | |
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Warning | |
H302, H302+H312, H312[2] | |
P264, P270, P280, P301+P312, P302+P352, P312, P322, P330, P363, P501 | |
Related compounds | |
Related compounds
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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).
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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]
Synthesis
Precipitation of soluble yttrium salts with oxalic acid:[5]
Properties
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]
Related
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 |
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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
- ^ 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.
- ^ "Yttrium Oxalate | Diyttrium trioxalate | C6H18O21Y2". Ereztech. Retrieved 25 June 2021.
- ^ "Yttrium oxalate". National Institute of Standards and Technology. Retrieved 25 June 2021.
- ^ 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.
- ^ 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.
- ^ "Yttrium Oxalate". American Elements. Retrieved 25 June 2021.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.