“…For a detailed study of the luminescence properties of the title compound, see : Eagleman et al (2011). Similar structure types to that of the title compound have been observed in ternary alkaline earth and rare earth fluorides (Bevan et al, 1980(Bevan et al, , 1982Burns et al, 1968), chlorides (Liu & Eick, 1988Lö chner & Blachnik, 2011;Meyer & Masselmann, 1998), and bromides (Masselmann & Meyer, 1999;Liu & Eick, 1989) and in mixed valent rare earth halides (Druding & Corbett 1961;Liu & Eick, 1991). For structural details of simple and complex halides, see: Meyer & Wickleder (2000).…”