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Samarium(III) phosphate

Identifiers
CAS Number	13465-57-1 monohydrate: 14913-18-9
3D model (JSmol)	Interactive image monohydrate: Interactive image
ChemSpider	13931016
ECHA InfoCard	100.033.348
EC Number	236-698-0
PubChem CID	13710715 monohydrate: 16217379
CompTox Dashboard (EPA)	DTXSID10928706
InChI InChI=1S/H3O4P.Sm/c1-5(2,3)4;/h(H3,1,2,3,4);/q;+3/p-3Key: BJRVEOKYZKROCC-UHFFFAOYSA-K monohydrate: InChI=1S/H3O4P.H2O.Sm/c1-5(2,3)4;;/h(H3,1,2,3,4);1H2;/q;;+3/p-3Key: GIUBLDXWAJRBHC-UHFFFAOYSA-K
SMILES P(=O)(). monohydrate: O.P(=O)().
Properties
Chemical formula	O4PSm
Molar mass	245.33 g·mol
Appearance	solid
Density	5.83 g·cm
Solubility in water	insoluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references

Samarium(III) phosphate is an inorganic compound, with the chemical formula of SmPO₄. It is one of the phosphates of samarium.

Preparation

Samarium(III) phosphate can be obtained by reacting sodium metaphosphate with any soluble samarium(III) salt:

${\displaystyle {\mathsf {SmCl_{3}+NaPO_{3}+H_{2}O\ {\xrightarrow {}}\ 2SmPO_{4}\downarrow +NaCl+2HCl}}}$

Samarium(III) phosphate can also be obtained by reacting phosphoric acid and samarium(III) chloride.

Properties

Samarium(III) phosphate reacts with sodium fluoride at 750 °C to form Na₂SmF₂PO₄. Samarium(III) phosphate forms crystals of the monoclinic crystal system, with space group P2₁/n, and lattice parameters a = 0.6669 nm, b = 0.6868 nm, c = 0.6351 nm, β = 103.92 °, Z = 4.

References

1. HIKICHI, Yasuo; MURAYAMA, Kyouhei; OHSATO, Hitoshi; NOMURA, Tsuyoshi (1990). "Thermal changes of rare earth phosphate minerals". Journal of the Mineralogical Society of Japan (in Japanese). 19 (3). Japan Association of Mineralogical Sciences: 117–126. doi:10.2465/gkk1952.19.117. ISSN 1883-7018.
2. Zimina, G. V.; Smirnova, I. N.; Gorkovenko, M. Yu.; Spiridonov, F. M.; Komissarova, L. N.; Kaloev, N. I. Synthesis and study of rare earth element fluorophosphates Na2LnF2PO4(in Russian). Zhurnal Neorganicheskoi Khimii, 1994. 39 (9): 1571-1574. ISSN 0044-457X.
3. D.F. Mullica, David A. Grossie, L.A. Boatner (March 1985). "Coordination geometry and structural determinations of SmPO4,EuPO4 and GdPO4". Inorganica Chimica Acta. 109 (2): 105–110. doi:10.1016/S0020-1693(00)84549-1. Retrieved 2021-11-19.{{cite journal}}: CS1 maint: multiple names: authors list (link)

• Phosphates
• Samarium(III) compounds