Europium(III) selenide is an inorganic compound with the chemical formula Eu2Se3. It is one of the selenides of europium.Sadovskaya, O. A.; Yarembash, E. I.; Naginaev, E. N. Europium selenides. Izvestiya Akademii Nauk SSSR, Neorganicheskie Materialy, 1971. 7 (2): 323. . It can be obtained by the reaction of selenium and europium at high temperature. It co-melts with germanium diselenide to form Eu2GeSe5 and Eu2Ge2Se7.Nasibov, I. O.; Sultanov, T. I.; Dzhalilzade, T. A. Europium(III) selenide-germanium selenide system. Zhurnal Neorganicheskoi Khimii, 1981. 26 (9): 2529-2533. It reacts with uranium and uranium diselenide at high temperature to obtain EuU2Se5.Slovyanskikh, V. K.; Kuznetsov, N. T.; Gracheva, N. V. Mixed selenides of uranium and cerium-subgroup rare earth elements of composition Ln2USe5 and LnU2Se5. Zhurnal Neorganicheskoi Khimii, 1984. 29 (7): 1676-1678.
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