Holmium(III) oxalate

Holmium(III) oxalate

Identifiers
CAS Number	3269-15-6  Y decahydrate: 28965-57-3
3D model (JSmol)	Interactive image dihydrate: Interactive image decahydrate: Interactive image
ChemSpider	144740 decahydrate: 21428149
EC Number	221-886-7
PubChem CID	165098 decahydrate: 25021755
CompTox Dashboard (EPA)	DTXSID80954375 decahydrate: DTXSID90648470
InChI InChI=1S/3C2H2O4.2Ho/c3*3-1(4)2(5)6;;/h3*(H,3,4)(H,5,6);;/q;;;2*+3/p-6 Key: DYYFBWLZDJSPGO-UHFFFAOYSA-H dihydrate:InChI=1S/3C2H2O4.2Ho.2H2O/c3*3-1(4)2(5)6;;;;/h3*(H,3,4)(H,5,6);;;2*1H2/q;;;2*+3;;/p-6 Key: MIBITVHERFMSTH-UHFFFAOYSA-H decahydrate:InChI=1S/3C2H2O4.2Ho.10H2O/c3*3-1(4)2(5)6;;;;;;;;;;;;/h3*(H,3,4)(H,5,6);;;10*1H2/q;;;2*+3;;;;;;;;;;/p-6 Key: OKKLEXNPKBZYQY-UHFFFAOYSA-H
SMILES [Ho+3].[Ho+3].[O-]C(=O)C(=O)[O-].[O-]C(=O)C(=O)[O-].[O-]C(=O)C(=O)[O-] dihydrate:[Ho+3].[Ho+3].[O-]C(=O)C(=O)[O-].[O-]C(=O)C(=O)[O-].[O-]C(=O)C(=O)[O-].O.O decahydrate:[Ho+3].[Ho+3].[O-]C(=O)C(=O)[O-].[O-]C(=O)C(=O)[O-].[O-]C(=O)C(=O)[O-].O.O.O.O.O.O.O.O.O.O
Properties
Chemical formula	Ho2(C2O4)3
Appearance	yellow crystals (heptahydrate)
Related compounds
Other cations	Cerium(III) oxalate Europium(III) oxalate Gadolinium(III) oxalate Lanthanum(III) oxalate Neodymium(III) oxalate Praseodymium(III) oxalate Promethium(III) oxalate Samarium(III) oxalate Terbium(III) oxalate Thulium(III) oxalate Ytterbium(III) oxalate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Holmium(III) oxalate is the oxalate salt of holmium, with the chemical formula Ho₂(C₂O₄)₃. It exists in anhydrous and hydrated forms.

Properties

Holmium(III) oxalate decahydrate decomposes in heat to obtain the dihydrate, which is further heated to obtain the anhydrous form, and finally holmium(III) oxide is obtained. ^[1] It reacts with hydrochloric acid to obtain H[Ho(C₂O₄)₂]·6H₂O. ^[2]

References

1. Wendlandt, W. W. (1959). "Thermal Decomposition of Rare Earth Metal Oxalates". Analytical Chemistry. 31 (3): 408–410. doi:10.1021/ac60147a024. ISSN   0003-2700.
2. Moebius, R.; Matthes, F. (1964). "The exchange of oxalate ions for chloride ions of the oxalate hydrates of the rare earths and yttrium". Zeitschrift für Chemie. 4 (6): 234–235.