CaIn2-type and MgAgAs-type RESbPd compounds (RE  rareearthelement)

REPtX compounds with structures related to AIB2- and MgAgAs-type (RE=Y, Rare earth element;Χ = Ρ, As, Sb)

“…This spatial arrangement is more flexible relative to the atomic sizes and allows a higher packing density. Comparable changes between structures with four-and threecoordinated Β atoms were also described for the series of the rare earth compounds ÄENiSb (Dwight, 1974;Pecharskii et al, 1983) and REPdSb (Marazza et al, 1980b) as well as for the non-electrovalent compounds Ä£NiSi and ÄEPtSi (TiNiSi type -LaPtSi type; Hovestreydt et al, 1982). …”

Equiatomic Rare Earth (Ln) Transition Metal Antimonides LnTSb (T=Rh, lr) and Bismuthides LnTBi (T=Rh, Ni, Pd, Pt)

“…For the corresponding compounds with the large early rare earth elements LnNiSb (Ln=La-Nd, Sm, Gd) a hexagonal ZrBeSi-(sometimes also called ordered Ni 2 In-) type structure has been established (8,9). The homologous series LnPdSb with Ln=La-Nd, Sm, Gd, Tb is reported to crystallize with the hexagonal (disordered) CaIn 2 -type structure (10,11). For Ln=Y, Dy-Lu the cubic MgAgAs-type structure was observed (10)(11)(12); while the europium compound EuPdSb has the orthorhombic TiNiSi-type structure (10).…”

“…The homologous series LnPdSb with Ln=La-Nd, Sm, Gd, Tb is reported to crystallize with the hexagonal (disordered) CaIn 2 -type structure (10,11). For Ln=Y, Dy-Lu the cubic MgAgAs-type structure was observed (10)(11)(12); while the europium compound EuPdSb has the orthorhombic TiNiSi-type structure (10). The platinum-containing compounds ScPtSb, YPtSb, and the series LnPtSb (Ln=Gd-Lu) crystallize with the cubic MgAgAs-type structure (7).…”

Structure, magnetic and electrical properties of CeIrSb and its hydride CeIrSbH0.8

“…The CeIrSb structure leaves several tetrahedral voids [Ce 3 Ir] which can be filled with hydrogen. Similar H-insertion was reported for the ternary compounds adopting the TiNiSi type as CeNiSn [30] or NdNiSn [31].…”

“…The degree of puckering of the distorted T 3 Sb 3 hexagons depends on the valence electron concentration (VEC). CeTSb with T = Ni [2], Pd [3], Pt [4], and Au [5,6] adopt hexagonal structures (ZrBeSi or NdPtSb type) with planar or slightly puckered T 3 Sb 3 hexagons. Detailed single crystal studies on these ternary antimonides, however, have not been performed.…”