Samarium pentaphosphide

Samarium pentaphosphide is a binary inorganic compound of samarium metal and phosphorus with the chemical formula SmP₅.^[2][3]

Samarium pentaphosphide

Identifiers
CAS Number	54466-01-2 Y
3D model (JSmol)	Interactive image
InChI InChI=1S/5P.Sm Key: BOIVIBBFKRHHPN-UHFFFAOYSA-N
SMILES [Sm].[P].[P].[P].[P].[P]
Properties
Chemical formula	P5Sm
Molar mass	305.23 g·mol−1
Appearance	crystals
Density	3.99 g/cm3[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Preparation

Samarium pentaphosphide can be prepared by heating stoichiometric amounts of samarium and phosphorus at 700 °C:

4 Sm + 5 P₄ → 4 SmP₅

Properties

Samarium pentaphosphide forms crystals of monoclinic crystal system, spatial group P12₁/m1 or P2₁.^[4][5] It decomposes at 700 °C.