Samarium(III) phosphate

Identifiers

CAS Number

* 13465-57-1 Y
* monohydrate: 14913-18-9

3D model (JSmol)

* Interactive image
* monohydrate: Interactive image

ChemSpider |

* 13931016

EC Number |

* 236-698-0

PubChem CID

* 13710715
* monohydrate: 16217379

InChI

* InChI=1S/H3O4P.Sm/c1-5(2,3)4;/h(H3,1,2,3,4);/q;+3/p-3

Key: BJRVEOKYZKROCC-UHFFFAOYSA-K

* monohydrate: InChI=1S/H3O4P.H2O.Sm/c1-5(2,3)4;;/h(H3,1,2,3,4);1H2;/q;;+3/p-3

Key: GIUBLDXWAJRBHC-UHFFFAOYSA-K

SMILES

* [O-]P(=O)([O-])[O-].[Sm+3]

* monohydrate: O.[O-]P(=O)([O-])[O-].[Sm+3]

Properties

Chemical formula

| O4PSm
Molar mass | 245.33 g·mol−1
Appearance  | solid
Density | 5.83 g·cm−3

Solubility in water

| insoluble

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 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:

[math]\displaystyle{ \mathsf{ SmCl_3 + NaPO_3 + H_2O \ \xrightarrow{}\ 2 SmPO_4\downarrow + NaCl + 2 HCl } }[/math]

Samarium(III) phosphate can also be obtained by reacting phosphoric acid and samarium(III) chloride.[1]

## Properties

Samarium(III) phosphate reacts with sodium fluoride at 750 °C to form Na2SmF2PO4.[2] 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.[3]

## References

1. ↑ HIKICHI, Yasuo; MURAYAMA, Kyouhei; OHSATO, Hitoshi; NOMURA, Tsuyoshi (1990). "Thermal changes of rare earth phosphate minerals" (in ja). Journal of the Mineralogical Society of Japan (Japan Association of Mineralogical Sciences) 19 (3): 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" (in en). Inorganica Chimica Acta 109 (2): 105–110. doi:10.1016/S0020-1693(00)84549-1. https://linkinghub.elsevier.com/retrieve/pii/S0020169300845491. Retrieved 2021-11-19.

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Samarium compounds

Samarium(II)|

* SmCl2
* SmBr2
* SmB6
* SmI2
* SmS
* SmSe
* SmTe

Samarium(III)|

* SmCl3
* SmBr3
* SmF3
* Sm2O3
* Sm2S3
* Sm2(SO4)3
* Sm(NO3)3
* Sm2(CO3)3

| Organosamarium(III)|

* Sm2(C2O4)3
* Sm(C5H5)3

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