White Spruce – Picea glauca

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:

{\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]

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]

^ 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)