Praseodymium(III) phosphate

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Praseodymium(III) phosphate
Identifiers
3D model (
JSmol
)
ECHA InfoCard
 100.034.740 Edit this at Wikidata
EC Number
  • 238-231-6
  • InChI=1S/H3O4P.Pr/c1-5(2,3)4;/h(H3,1,2,3,4);/q;+3/p-3
    Key: KDCUNMWWJBHRSC-UHFFFAOYSA-K
  • [O-]P(=O)([O-])[O-].[Pr+3]
Properties
O4PPr
Molar mass 235.877 g·mol−1
Appearance solid
Hazards
GHS labelling:[1]
GHS07: Exclamation mark
Warning
H315, H319, H335
P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Praseodymium(III) phosphate is an inorganic compound with the chemical formula PrPO4.

Preparation

Praseodymium(III) phosphate hemihydrate can be obtained by reacting

praseodymium chloride and phosphoric acid:[2]

PrCl3 + H3PO4 → PrPO4 + 3 HCl

It can also be produced by reacting silicon pyrophosphate (SiP2O7) and praseodymium(III,IV) oxide (Pr6O11) at 1200 °C.[3]

Properties

Praseodymium(III) phosphate forms light green crystals in the monoclinic crystal system, with space group P21/n and cell parameters a = 0.676 nm, b = 0.695 nm, c = 0.641 nm, β = 103.25°, Z = 4.[4][5]

It forms a crystal hydrate of the composition PrPO4·nH2O, where n < 0.5, with light green crystals of

hexagonal crystal system, space group P6222, and cell parameters a = 0.700 nm, c = 0.643 nm, Z = 3.[6][7]

Praseodymium(III) phosphate reacts with sodium fluoride to obtain Na2PrF2(PO4).[8]

PrPO4 + 2 NaF → Na2PrF2(PO4)

References

  1. ^ "Praseodymium(III) phosphate". pubchem.ncbi.nlm.nih.gov.
  2. ISSN 0009-2673
    .
  3. ISSN 0002-7820. Retrieved 2022-03-06.{{cite journal}}: CS1 maint: multiple names: authors list (link
    )
  4. ISBN 978-5-9704-7930-8
    , retrieved 2023-12-06
  5. ISSN 0020-1693
    .
  6. ISBN 978-5-00120-359-9
    .
  7. ISSN 0022-1902
    .
  8. ISSN 0931-7597
    .
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