Sm(Ni2Sn)2 crystallizes in the tetragonal I-4c2 space group. Sm(1) is bonded in a 8-coordinate geometry to eight equivalent Ni(1) and eight equivalent Sn(1) atoms. Ni(1) is bonded in a 10-coordinate geometry to two equivalent Sm(1), four equivalent Ni(1), and four equivalent Sn(1) atoms. Sn(1) is bonded in a 12-coordinate geometry to four equivalent Sm(1) and eight equivalent Ni(1) atoms.
Sm(Ni2Sn)2 crystallizes in the tetragonal I-4c2 space group. Sm(1) is bonded in a 8-coordinate geometry to eight equivalent Ni(1) and eight equivalent Sn(1) atoms. There are four shorter (3.03 Å) and four longer (3.04 Å) Sm(1)-Ni(1) bond lengths. All Sm(1)-Sn(1) bond lengths are 3.50 Å. Ni(1) is bonded in a 10-coordinate geometry to two equivalent Sm(1), four equivalent Ni(1), and four equivalent Sn(1) atoms. There are a spread of Ni(1)-Ni(1) bond distances ranging from 2.53-2.72 Å. There are a spread of Ni(1)-Sn(1) bond distances ranging from 2.55-2.65 Å. Sn(1) is bonded in a 12-coordinate geometry to four equivalent Sm(1) and eight equivalent Ni(1) atoms.