Figure 1
The O-atom coordination around five M sites in the structure of Ca1.5Eu3Sn0.5O7, showing Ca1/Eu1- and Ca2/Eu2-centred oxygen trigonal prisms. Displacement ellipsoids are drawn at the 50% probability level. [Symmetry codes as in Table 1; additionally: (x) −x + , −y + , z; (xi) x + , y − z + 1.] |