DOE OSTI2020
Ce4Pd3Bi8 crystallizes in the tetragonal P-4m2 space group. The structure is three-dimensional. there are two inequivalent Ce sites. In the first Ce site, Ce is bonded in a 11-coordinate geometry to two equivalent Pd and nine Bi atoms. Both Ce–Pd bond lengths are 3.17 Å. There are a spread of Ce–Bi bond distances ranging from 3.36–3.68 Å. In the second Ce site, Ce is bonded to four equivalent Pd and eight Bi atoms to form a mixture of edge, face, and corner-sharing CeBi8Pd4 cuboctahedra. All Ce–Pd bond lengths are 3.23 Å. There are four shorter (3.35 Å) and four longer (3.48 Å) Ce–Bi bond lengths. There are two inequivalent Pd sites. In the first Pd site, Pd is bonded in a distorted body-centered cubic geometry to four equivalent Ce and four equivalent Bi atoms. All Pd–Bi bond lengths are 2.88 Å. In the second Pd site, Pd is bonded in a body-centered cubic geometry to four equivalent Ce and four equivalent Bi atoms. All Pd–Bi bond lengths are 2.80 Å. There are four inequivalent Bi sites. In the first Bi site, Bi is bonded in a 7-coordinate geometry to five equivalent Ce and two equivalent Pd atoms. In the second Bi site, Bi is bonded in a 8-coordinate geometry to four equivalent Ce and four equivalent Pd atoms. In the third Bi site, Bi is bonded in a 8-coordinate geometry to four Ce and four equivalent Bi atoms. All Bi–Bi bond lengths are 3.31 Å. In the fourth Bi site, Bi is bonded in a 8-coordinate geometry to four Ce and four equivalent Bi atoms.