Samarium pentaphosphide is a binary inorganic compound of samarium metal and phosphorus with the chemical formula .
Preparation Samarium pentaphosphide can be prepared by heating stoichiometric amounts of samarium and phosphorus at 700 °C:
Properties Samarium pentaphosphide forms crystals of monoclinic crystal system, spatial group P121/m1 or P21. It decomposes at 700 °C.
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