Crystal structures of new ternary compounds in RE–Pt–Pb and RE–Au–Pb systems (RE = rare earth metal)

The crystal structures of the compounds RE2Pt2Pb (RE = Y, La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu; Mo2FeB2 structure type, space group P4/mbm, Pearson code tP10), REPtPb (RE = La, Ce, Pr, Nd, Sm; ZrNiAl structure type, space group P6¯2m, Pearson code hP9), RE2Au2Pb (RE = Y, La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu; Er2Au2Sn structure type, space group P42/mnm, Pearson code tP20) and REAuPb (RE = Tm, Yb and Lu) were determined using X-ray powder diffraction.

► We have performed a phase analysis of the systems RE–Pt–Pb and REPtPb (RE = rare earth). ► We have prepared the compounds RE–Pt–Pb and REPtPb by arc melting and subsequent annealing. ► We have determined the structures of Pr2Pt2Pb, PrPtPb, and Yb2Au2Pb by X-ray powder diffraction.