Sm2Pt4P3 crystallizes in the tetragonal I-4m2 space group. There are three inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 15-coordinate geometry to four equivalent Pt(2), five equivalent Pt(1), two equivalent P(2), and four equivalent P(1) atoms. In the second Sm site, Sm(1) is bonded in a 15-coordinate geometry to four equivalent Pt(2), five equivalent Pt(1), two equivalent P(2), and four equivalent P(1) atoms. In the third Sm site, Sm(1) is bonded in a 15-coordinate geometry to four equivalent Pt(2), five equivalent Pt(1), two equivalent P(2), and four equivalent P(1) atoms. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 8-coordinate geometry to five Sm(1,1); one P(1); and two equivalent P(2) atoms. In the second Pt site, Pt(2) is bonded in a 8-coordinate geometry to four equivalent Sm(1) and four equivalent P(1) atoms. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to four equivalent Sm(1), one Pt(1), and four equivalent Pt(2) atoms. In the second P site, P(1) is bonded in a 9-coordinate geometry to four equivalent Sm(1), one Pt(1), and four equivalent Pt(2) atoms. In the third P site, P(2) is bonded in a 8-coordinate geometry to four Sm(1,1) and four equivalent Pt(1) atoms.
Sm2Pt4P3 crystallizes in the tetragonal I-4m2 space group. There are three inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 15-coordinate geometry to four equivalent Pt(2), five equivalent Pt(1), two equivalent P(2), and four equivalent P(1) atoms. There are two shorter (3.18 Å) and two longer (3.19 Å) Sm(1)-Pt(2) bond lengths. There are four shorter (3.21 Å) and one longer (3.34 Å) Sm(1)-Pt(1) bond length. Both Sm(1)-P(2) bond lengths are 3.11 Å. All Sm(1)-P(1) bond lengths are 3.10 Å. In the second Sm site, Sm(1) is bonded in a 15-coordinate geometry to four equivalent Pt(2), five equivalent Pt(1), two equivalent P(2), and four equivalent P(1) atoms. There are two shorter (3.18 Å) and two longer (3.19 Å) Sm(1)-Pt(2) bond lengths. There are four shorter (3.21 Å) and one longer (3.34 Å) Sm(1)-Pt(1) bond length. Both Sm(1)-P(2) bond lengths are 3.11 Å. All Sm(1)-P(1) bond lengths are 3.10 Å. In the third Sm site, Sm(1) is bonded in a 15-coordinate geometry to four equivalent Pt(2), five equivalent Pt(1), two equivalent P(2), and four equivalent P(1) atoms. There are two shorter (3.18 Å) and two longer (3.19 Å) Sm(1)-Pt(2) bond lengths. There are four shorter (3.21 Å) and one longer (3.34 Å) Sm(1)-Pt(1) bond length. Both Sm(1)-P(2) bond lengths are 3.11 Å. All Sm(1)-P(1) bond lengths are 3.10 Å. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 8-coordinate geometry to five Sm(1,1); one P(1); and two equivalent P(2) atoms. The Pt(1)-P(1) bond length is 2.32 Å. Both Pt(1)-P(2) bond lengths are 2.31 Å. In the second Pt site, Pt(2) is bonded in a 8-coordinate geometry to four equivalent Sm(1) and four equivalent P(1) atoms. There are two shorter (2.49 Å) and two longer (2.51 Å) Pt(2)-P(1) bond lengths. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to four equivalent Sm(1), one Pt(1), and four equivalent Pt(2) atoms. In the second P site, P(1) is bonded in a 9-coordinate geometry to four equivalent Sm(1), one Pt(1), and four equivalent Pt(2) atoms. The P(1)-Pt(1) bond length is 2.32 Å. There are two shorter (2.49 Å) and two longer (2.51 Å) P(1)-Pt(2) bond lengths. In the third P site, P(2) is bonded in a 8-coordinate geometry to four Sm(1,1) and four equivalent Pt(1) atoms.