Materials Data on Sm(AlZn)2 by Materials Project
Sm(ZnAl)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Sm is bonded in a 8-coordinate geometry to eight equivalent Zn and eight equivalent Al atoms. All Sm–Zn bond lengths are 3.19 Å. All Sm–Al bond lengths are 3.45 Å. Zn is bonded in a 9-coordinate geometry to four equivalent Sm, one Zn, and four equivalent Al atoms. The Zn–Zn bond length is 2.43 Å. All Zn–Al bond lengths are 2.59 Å. Al is bonded to four equivalent Sm, four equivalent Zn, and four equivalent Al atoms to form a mixture of distorted edge, face, and corner-sharing AlSm4Al4Zn4 cuboctahedra. All Al–Al bond lengths are 2.95 Å.
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