Praseodymium(III) phosphate

(Redirected from Praseodymium monophosphate)

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

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).

Preparation

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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

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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

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  1. ^ "Praseodymium(III) phosphate". pubchem.ncbi.nlm.nih.gov.
  2. ^ Hikichi, Yasuo; Hukuo, Ken-iti; Shiokawa, Jiro (Dec 1978). "Syntheses of Rare Earth Orthophosphates". Bulletin of the Chemical Society of Japan. 51 (12): 3645–3646. doi:10.1246/bcsj.51.3645. ISSN 0009-2673.
  3. ^ Carlos E. Bamberger, George M. Begun, Dale E. Heatherly (Nov 1983). "Synthesis of Metal Phosphates Using SiP2O7". Journal of the American Ceramic Society. 66 (11): c208–c209. doi:10.1111/j.1151-2916.1983.tb10575.x. ISSN 0002-7820. Retrieved 2022-03-06.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  4. ^ Garkavi, Andrey Vladimirovich (2023), "How to Draw Up and Complete a Dissertation, 2nd ed., revised and enlarged", How to Draw up and Complete a Dissertation, 2nd ed., revised and enlarged, OOO "GEOTAR-Media" Publishing Group, pp. 1–80, doi:10.33029/9704-7930-8-hdc-2023-1-80, ISBN 978-5-9704-7930-8, retrieved 2023-12-06
  5. ^ Horchani-Naifer, K.; Férid, M. (2009-04-20). "Crystal structure, energy band and optical characterizations of praseodymium monophosphate PrPO4". Inorganica Chimica Acta. 362 (6): 1793–1796. doi:10.1016/j.ica.2008.08.021. ISSN 0020-1693.
  6. ^ Инязовские чтения. Сборник научных статей Первой международной научно-практической конференции Совета молодых ученых МГЛУ (in Russian). Москва: Московский государственный лингвистический университет. 2022. doi:10.52070/978-5-00120-359-9_2022. ISBN 978-5-00120-359-9.
  7. ^ Hezel, A.; Ross, S. D. (1967-08-01). "X-ray powder data and cell dimensions of some rare earth orthophosphates". Journal of Inorganic and Nuclear Chemistry. 29 (8): 2085–2089. doi:10.1016/0022-1902(67)80469-X. ISSN 0022-1902.
  8. ^ ZIMINA, G. V.; SMIRNOVA, I. N.; GORKOVENKO, M. YU.; SPIRIDONOV, F. M.; KOMISSAROVA, L. N.; KALOEV, N. I. (1995-02-21). "ChemInform Abstract: Synthesis and Studies of Fluorophosphates of Rare Earth Elements Na2LnF2PO4". ChemInform. 26 (8). doi:10.1002/chin.199508015. ISSN 0931-7597.