Materials Data on Sm2Tl by Materials Project
Sm2Tl crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a 6-coordinate geometry to eight Sm and six equivalent Tl atoms. There are two shorter (3.44 Å) and six longer (3.62 Å) Sm–Sm bond lengths. All Sm–Tl bond lengths are 3.62 Å. In the second Sm site, Sm is bonded to six equivalent Sm and five equivalent Tl atoms to form a mixture of distorted corner and face-sharing SmSm6Tl5 trigonal bipyramids. There are three shorter (3.19 Å) and two longer (3.44 Å) Sm–Tl bond lengths. Tl is bonded in a 11-coordinate geometry to eleven Sm atoms.
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