SmOs2Si2 crystallizes in the tetragonal I4/mmm space group. Sm(1) is bonded in a 16-coordinate geometry to eight equivalent Os(1) and eight equivalent Si(1) atoms. Os(1) is bonded in a 4-coordinate geometry to four equivalent Sm(1) and four equivalent Si(1) atoms. Si(1) is bonded in a 4-coordinate geometry to four equivalent Sm(1) and four equivalent Os(1) atoms.
SmOs2Si2 crystallizes in the tetragonal I4/mmm space group. Sm(1) is bonded in a 16-coordinate geometry to eight equivalent Os(1) and eight equivalent Si(1) atoms. All Sm(1)-Os(1) bond lengths are 3.21 Å. All Sm(1)-Si(1) bond lengths are 3.23 Å. Os(1) is bonded in a 4-coordinate geometry to four equivalent Sm(1) and four equivalent Si(1) atoms. All Os(1)-Si(1) bond lengths are 2.39 Å. Si(1) is bonded in a 4-coordinate geometry to four equivalent Sm(1) and four equivalent Os(1) atoms.