Yttrium oxalate

Source: Wikipedia, the free encyclopedia.
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
SMILES
  • [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
Praseodymium oxalate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

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]

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

  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. 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. doi:10.1002/zaac.19633240112
    .
  8. S2CID 96385377
    .
  9. doi:10.1107/S0365110X67004104
    .
  10. ^
    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. S2CID 93288364
    .
  13. S2CID 98146305
    .
  14. doi:10.1016/j.ica.2008.05.029
    .
  15. doi:10.1039/b001201g
    .
  16. S2CID 95932914
    .
  17. PMID 11099966
    .
Retrieved from "https://en.wikipedia.org/w/index.php?title=Yttrium_oxalate&oldid=1291840662"