Praseodymium arsenate

Praseodymium arsenate is the arsenate salt of praseodymium, with the chemical formula of PrAsO4. It has good thermal stability. Its ferroelectric transition temperature is 52°C.[1]

Praseodymium arsenate
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/AsH3O4.Pr/c2-1(3,4)5;/h(H3,2,3,4,5);/q;+3/p-3
    Key: WIIWZOSBVGBHHO-UHFFFAOYSA-K
  • [O-][As](=O)([O-])[O-].[Pr+3]
Properties
PrAsO4
Appearance solid
insoluble
Related compounds
Other anions
 Praseodymium(III) nitrate
Praseodymium(III) phosphate
Praseodymium(III) antimonate
Praseodymium(III) bismuthate
Praseodymium(III) carbonate
Other cations
 NdAsO4
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Preparation

Praseodymium arsenate be prepared by reacting sodium arsenate (Na3AsO4) and praseodymium chloride (PrCl3) in a solution:[2]

Na3AsO4 + PrCl3 → 3 NaCl + PrAsO4↓

The product can also be obtained by reacting praseodymium(III,IV) oxide and diammonium hydrogen arsenate in hot dilute nitric acid in a stoichiometric ratio.[1]

References
  1. Choudhary, R. N. P.. Structural and electrical properties of monoclinic praseodymium arsenic oxide (PrAsO4). Journal of Materials Science Letters, 1991. 10 (8): 432-434. DOI:10.1007/BF00838340
  2. Gabisoniya, Ts. D.; Nanobashvili, E. M.. Synthesis of rare earth metal arsenates. Soobshcheniya Akademii Nauk Gruzinskoi SSR (1980), 97(2), 345-8. ISSN 0002-3167
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