Materials Data on KBiPb by Materials Project
KPbBi crystallizes in the orthorhombic Imm2 space group. The structure is three-dimensional. there are two inequivalent K sites. In the first K site, K is bonded in a 12-coordinate geometry to six equivalent Pb and six equivalent Bi atoms. There are two shorter (4.03 Å) and four longer (4.12 Å) K–Pb bond lengths. There are four shorter (3.94 Å) and two longer (4.11 Å) K–Bi bond lengths. In the second K site, K is bonded in a 8-coordinate geometry to four equivalent Pb and four equivalent Bi atoms. All K–Pb bond lengths are 4.07 Å. All K–Bi bond lengths are 3.96 Å. Pb is bonded in a 9-coordinate geometry to five K, two equivalent Pb, and two equivalent Bi atoms. There are one shorter (3.20 Å) and one longer (3.40 Å) Pb–Pb bond lengths. Both Pb–Bi bond lengths are 3.19 Å. Bi is bonded in a 12-coordinate geometry to five K, two equivalent Pb, and one Bi atom. The Bi–Bi bond length is 3.26 Å.