Materials Data on Sm2Bi by Materials Project
Sm2Bi crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded to five equivalent Bi atoms to form a mixture of distorted corner and edge-sharing SmBi5 square pyramids. There are one shorter (3.27 Å) and four longer (3.32 Å) Sm–Bi bond lengths. In the second Sm site, Sm is bonded in a 4-coordinate geometry to four equivalent Sm and four equivalent Bi atoms. All Sm–Sm bond lengths are 3.24 Å. All Sm–Bi bond lengths are 3.38 Å. Bi is bonded in a 9-coordinate geometry to nine Sm atoms.
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