Materials Data on TmAgPb by Materials Project
TmAgPb crystallizes in the hexagonal P-62m space group. The structure is three-dimensional. Tm is bonded in a 5-coordinate geometry to six equivalent Ag and five Pb atoms. There are two shorter (3.31 Å) and four longer (3.62 Å) Tm–Ag bond lengths. There are four shorter (3.18 Å) and one longer (3.24 Å) Tm–Pb bond lengths. Ag is bonded in a 12-coordinate geometry to six equivalent Tm, two equivalent Ag, and four Pb atoms. Both Ag–Ag bond lengths are 3.18 Å. There are two shorter (2.88 Å) and two longer (2.93 Å) Ag–Pb bond lengths. There are two inequivalent Pb sites. In the first Pb site, Pb is bonded in a distorted q6 geometry to three equivalent Tm and six equivalent Ag atoms. In the second Pb site, Pb is bonded in a 9-coordinate geometry to six equivalent Tm and three equivalent Ag atoms.