Sm3(Pt2Ge3)2 crystallizes in the orthorhombic Pnma space group. There are three inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 15-coordinate geometry to two equivalent Pt(1), two equivalent Pt(3), two equivalent Pt(4), one Ge(4), one Ge(6), two equivalent Ge(2), two equivalent Ge(5), and three equivalent Ge(3) atoms. In the second Sm site, Sm(2) is bonded in a 14-coordinate geometry to three equivalent Pt(1), three equivalent Pt(2), two equivalent Ge(2), three equivalent Ge(1), and three equivalent Ge(4) atoms. In the third Sm site, Sm(3) is bonded in a 15-coordinate geometry to two equivalent Pt(2), two equivalent Pt(3), two equivalent Pt(4), one Ge(1), one Ge(3), two equivalent Ge(2), two equivalent Ge(5), and three equivalent Ge(6) atoms. There are four inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 10-coordinate geometry to two equivalent Sm(1), three equivalent Sm(2), one Ge(1), one Ge(2), one Ge(5), and two equivalent Ge(4) atoms. In the second Pt site, Pt(2) is bonded in a 10-coordinate geometry to two equivalent Sm(3), three equivalent Sm(2), one Ge(2), one Ge(4), one Ge(5), and two equivalent Ge(1) atoms. In the third Pt site, Pt(3) is bonded in a 5-coordinate geometry to two equivalent Sm(1), two equivalent Sm(3), one Ge(2), one Ge(6), and three equivalent Ge(3) atoms. In the fourth Pt site, Pt(4) is bonded in a 5-coordinate geometry to two equivalent Sm(1), two equivalent Sm(3), one Ge(3), one Ge(5), and three equivalent Ge(6) atoms. There are six inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to one Sm(3), three equivalent Sm(2), one Pt(1), two equivalent Pt(2), and one Ge(4) atom. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), two equivalent Sm(3), one Pt(1), one Pt(2), and one Pt(3) atom. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to one Sm(3), three equivalent Sm(1), one Pt(4), and three equivalent Pt(3) atoms. In the fourth Ge site, Ge(4) is bonded in a 8-coordinate geometry to one Sm(1), three equivalent Sm(2), one Pt(2), two equivalent Pt(1), and one Ge(1) atom. In the fifth Ge site, Ge(5) is bonded in a distorted trigonal planar geometry to two equivalent Sm(1), two equivalent Sm(3), one Pt(1), one Pt(2), and one Pt(4) atom. In the sixth Ge site, Ge(6) is bonded in a 4-coordinate geometry to one Sm(1), three equivalent Sm(3), one Pt(3), and three equivalent Pt(4) atoms.
Sm3(Pt2Ge3)2 crystallizes in the orthorhombic Pnma space group. There are three inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 15-coordinate geometry to two equivalent Pt(1), two equivalent Pt(3), two equivalent Pt(4), one Ge(4), one Ge(6), two equivalent Ge(2), two equivalent Ge(5), and three equivalent Ge(3) atoms. Both Sm(1)-Pt(1) bond lengths are 3.35 Å. Both Sm(1)-Pt(3) bond lengths are 3.33 Å. Both Sm(1)-Pt(4) bond lengths are 3.41 Å. The Sm(1)-Ge(4) bond length is 3.40 Å. The Sm(1)-Ge(6) bond length is 3.36 Å. Both Sm(1)-Ge(2) bond lengths are 3.30 Å. Both Sm(1)-Ge(5) bond lengths are 3.45 Å. There are two shorter (3.24 Å) and one longer (3.29 Å) Sm(1)-Ge(3) bond length. In the second Sm site, Sm(2) is bonded in a 14-coordinate geometry to three equivalent Pt(1), three equivalent Pt(2), two equivalent Ge(2), three equivalent Ge(1), and three equivalent Ge(4) atoms. There are two shorter (3.23 Å) and one longer (3.30 Å) Sm(2)-Pt(1) bond length. There are two shorter (3.24 Å) and one longer (3.30 Å) Sm(2)-Pt(2) bond length. Both Sm(2)-Ge(2) bond lengths are 3.08 Å. There are two shorter (3.08 Å) and one longer (3.12 Å) Sm(2)-Ge(1) bond length. There are two shorter (3.08 Å) and one longer (3.13 Å) Sm(2)-Ge(4) bond length. In the third Sm site, Sm(3) is bonded in a 15-coordinate geometry to two equivalent Pt(2), two equivalent Pt(3), two equivalent Pt(4), one Ge(1), one Ge(3), two equivalent Ge(2), two equivalent Ge(5), and three equivalent Ge(6) atoms. Both Sm(3)-Pt(2) bond lengths are 3.34 Å. Both Sm(3)-Pt(3) bond lengths are 3.30 Å. Both Sm(3)-Pt(4) bond lengths are 3.37 Å. The Sm(3)-Ge(1) bond length is 3.40 Å. The Sm(3)-Ge(3) bond length is 3.28 Å. Both Sm(3)-Ge(2) bond lengths are 3.29 Å. Both Sm(3)-Ge(5) bond lengths are 3.46 Å. There is one shorter (3.32 Å) and two longer (3.33 Å) Sm(3)-Ge(6) bond lengths. There are four inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 10-coordinate geometry to two equivalent Sm(1), three equivalent Sm(2), one Ge(1), one Ge(2), one Ge(5), and two equivalent Ge(4) atoms. The Pt(1)-Ge(1) bond length is 2.70 Å. The Pt(1)-Ge(2) bond length is 2.56 Å. The Pt(1)-Ge(5) bond length is 2.53 Å. Both Pt(1)-Ge(4) bond lengths are 2.50 Å. In the second Pt site, Pt(2) is bonded in a 10-coordinate geometry to two equivalent Sm(3), three equivalent Sm(2), one Ge(2), one Ge(4), one Ge(5), and two equivalent Ge(1) atoms. The Pt(2)-Ge(2) bond length is 2.56 Å. The Pt(2)-Ge(4) bond length is 2.71 Å. The Pt(2)-Ge(5) bond length is 2.53 Å. Both Pt(2)-Ge(1) bond lengths are 2.50 Å. In the third Pt site, Pt(3) is bonded in a 5-coordinate geometry to two equivalent Sm(1), two equivalent Sm(3), one Ge(2), one Ge(6), and three equivalent Ge(3) atoms. The Pt(3)-Ge(2) bond length is 2.48 Å. The Pt(3)-Ge(6) bond length is 2.52 Å. All Pt(3)-Ge(3) bond lengths are 2.53 Å. In the fourth Pt site, Pt(4) is bonded in a 5-coordinate geometry to two equivalent Sm(1), two equivalent Sm(3), one Ge(3), one Ge(5), and three equivalent Ge(6) atoms. The Pt(4)-Ge(3) bond length is 2.55 Å. The Pt(4)-Ge(5) bond length is 2.44 Å. All Pt(4)-Ge(6) bond lengths are 2.55 Å. There are six inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to one Sm(3), three equivalent Sm(2), one Pt(1), two equivalent Pt(2), and one Ge(4) atom. The Ge(1)-Ge(4) bond length is 2.62 Å. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), two equivalent Sm(3), one Pt(1), one Pt(2), and one Pt(3) atom. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to one Sm(3), three equivalent Sm(1), one Pt(4), and three equivalent Pt(3) atoms. In the fourth Ge site, Ge(4) is bonded in a 8-coordinate geometry to one Sm(1), three equivalent Sm(2), one Pt(2), two equivalent Pt(1), and one Ge(1) atom. In the fifth Ge site, Ge(5) is bonded in a distorted trigonal planar geometry to two equivalent Sm(1), two equivalent Sm(3), one Pt(1), one Pt(2), and one Pt(4) atom. In the sixth Ge site, Ge(6) is bonded in a 4-coordinate geometry to one Sm(1), three equivalent Sm(3), one Pt(3), and three equivalent Pt(4) atoms.