“…These compounds crystallize in a variety of structure types, depending on the T and X element species and exhibit various interesting physical properties. The most attractive are superconductivity with the critical temperature around 2 K (LaRhSn [1] and LaRhSb [2]), Kondo behavior (CeNiSn [3] and CeRhSb [4]) and non-Fermi-liquid behavior (CeRhSn [5]). Numerous Sn-containing compounds exhibit antiferromagnetic ordering of rare-earth magnetic moments (NdNiSn [6], CePdSn [7] and other compounds) whereas many compounds with Sb order ferromagnetically (for example NdNiSb [8], PrPdSb [9]).…”