Materials Data on SmMnSi by Materials Project
SmMnSi is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. Sm2+ is bonded in a 5-coordinate geometry to five equivalent Si4- atoms. There are four shorter (2.98 Å) and one longer (3.53 Å) Sm–Si bond lengths. Mn2+ is bonded to four equivalent Si4- atoms to form a mixture of edge and corner-sharing MnSi4 tetrahedra. All Mn–Si bond lengths are 2.43 Å. Si4- is bonded in a 9-coordinate geometry to five equivalent Sm2+ and four equivalent Mn2+ atoms.
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