Praseodymium(III) phosphate

Praseodymium(III) phosphate

Identifiers
CAS Number	14298-31-8  Y
3D model (JSmol)	Interactive image
ChemSpider	2341292
ECHA InfoCard	100.034.740
EC Number	238-231-6
PubChem CID	3084189
CompTox Dashboard (EPA)	DTXSID90162267
InChI InChI=1S/H3O4P.Pr/c1-5(2,3)4;/h(H3,1,2,3,4);/q;+3/p-3 Key: KDCUNMWWJBHRSC-UHFFFAOYSA-K
SMILES [O-]P(=O)([O-])[O-].[Pr+3]
Properties
Chemical formula	O4PPr
Molar mass	235.877 g·mol−1
Appearance	solid
Hazards
GHS labelling: [1]
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	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). Infobox references

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. 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.
4. Garkavi, Andrey Vladimirovich (2023), "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{{citation}}: Missing or empty |title= (help)
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) chin.199508015. doi:10.1002/chin.199508015. ISSN   0931-7597.