RMX compounds formed by alkaline earths, europium and ytterbium III. Ternary phases with M Mg, Hg and X Si, Ge, Sn, Pb

Seventeen new RMX phases were synthesized in the systems with R Ca, Sr, Ba, Eu, Yb, M Mg, Hg and X Si, Ge, Sn, Pb. X-Ray analysis on powders and single crystals assigned the phases to five structure types: ZrBeSi, LiGaGe, TiNiSi, CeCu2 and ZrNiAl. The distribution of 180 possible RMX compounds among eight structural types is discussed in a tridimensional map.