Potassium europium molybdate phosphate

The new compound K(2)Eu(MoO(4))(PO(4)) has been synthesized. The compound is isostructural to the known potassium lanthanide molybdate phosphates (Ln = Nd, Sm, Dy, Yb, Lu). It crystallizes in space group Ibca (no. 73) with the unit cell parameters a = 19.734 b = 12.301 c = 6.978 V = 1693.8 , R (p) = 2.19%, R (wp) = 2.97%. K(2)Eu(MoO(4))(PO(4)) decomposes above 1000A degrees C and has a rather high luminescence intensity. The (5)D(0)-(7)F(2,4) electric dipole transitions are noticeably stronger than the (5)D(0)-(7)F(1,3) magnetic dipole transitions because of the noncentrosymmetric coordination environment of the europium ions in the complex molybdate phosphate.