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Samarium(III) phosphate
Identifiers
ChemSpider
ECHA InfoCard
100.033.348
EC Number
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
[O-]P(=O)([O-])[O-].[Sm+3]
monohydrate: O.[O-]P(=O)([O-])[O-].[Sm+3]
Properties
O 4 P Sm
Molar mass
245.33 g·mol−1
Appearance
solid
Density
5.83 g·cm−3
insoluble
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
Chemical compound
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:
S
m
C
l
3
+
N
a
P
O
3
+
H
2
O
→
2
S
m
P
O
4
↓
+
N
a
C
l
+
2
H
C
l
{\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 .
[1]
Properties
Samarium(III) phosphate reacts with
sodium fluoride at 750 °C to form
Na2 SmF2 PO4 .
[2] Samarium(III) phosphate forms crystals of the
monoclinic crystal system , with
space group P 21 /n, and
lattice parameters a = 0.6669 nm, b = 0.6868 nm, c = 0.6351 nm, β = 103.92 °, Z = 4.
[3]
References
^ 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 .
^ 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 .
^ 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 )
Samarium(II) Samarium(III)