Nd3Zn11 crystallizes in the orthorhombic Immm space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 16-coordinate geometry to two equivalent Zn(2), two equivalent Zn(4), six equivalent Zn(1), and six equivalent Zn(3) atoms. In the second Nd site, Nd(2) is bonded in a 16-coordinate geometry to four equivalent Zn(2), four equivalent Zn(3), and eight equivalent Zn(1) atoms. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 10-coordinate geometry to two equivalent Nd(2), three equivalent Nd(1), one Zn(1), one Zn(2), and three equivalent Zn(3) atoms. In the second Zn site, Zn(2) is bonded to two equivalent Nd(1), two equivalent Nd(2), two equivalent Zn(1), two equivalent Zn(4), and four equivalent Zn(3) atoms to form a mixture of distorted corner, face, and edge-sharing ZnNd4Zn8 cuboctahedra. In the third Zn site, Zn(3) is bonded in a 10-coordinate geometry to one Nd(2), three equivalent Nd(1), one Zn(4), two equivalent Zn(2), and three equivalent Zn(1) atoms. In the fourth Zn site, Zn(4) is bonded to four equivalent Nd(1), four equivalent Zn(2), and four equivalent Zn(3) atoms to form face-sharing ZnNd4Zn8 cuboctahedra.
Nd3Zn11 crystallizes in the orthorhombic Immm space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 16-coordinate geometry to two equivalent Zn(2), two equivalent Zn(4), six equivalent Zn(1), and six equivalent Zn(3) atoms. Both Nd(1)-Zn(2) bond lengths are 3.17 Å. Both Nd(1)-Zn(4) bond lengths are 3.43 Å. There are four shorter (3.14 Å) and two longer (3.32 Å) Nd(1)-Zn(1) bond lengths. There are four shorter (3.11 Å) and two longer (3.31 Å) Nd(1)-Zn(3) bond lengths. In the second Nd site, Nd(2) is bonded in a 16-coordinate geometry to four equivalent Zn(2), four equivalent Zn(3), and eight equivalent Zn(1) atoms. All Nd(2)-Zn(2) bond lengths are 3.53 Å. All Nd(2)-Zn(3) bond lengths are 3.10 Å. All Nd(2)-Zn(1) bond lengths are 3.32 Å. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 10-coordinate geometry to two equivalent Nd(2), three equivalent Nd(1), one Zn(1), one Zn(2), and three equivalent Zn(3) atoms. The Zn(1)-Zn(1) bond length is 2.50 Å. The Zn(1)-Zn(2) bond length is 2.60 Å. There are two shorter (2.59 Å) and one longer (2.74 Å) Zn(1)-Zn(3) bond length. In the second Zn site, Zn(2) is bonded to two equivalent Nd(1), two equivalent Nd(2), two equivalent Zn(1), two equivalent Zn(4), and four equivalent Zn(3) atoms to form a mixture of distorted corner, face, and edge-sharing ZnNd4Zn8 cuboctahedra. Both Zn(2)-Zn(4) bond lengths are 2.87 Å. All Zn(2)-Zn(3) bond lengths are 2.88 Å. In the third Zn site, Zn(3) is bonded in a 10-coordinate geometry to one Nd(2), three equivalent Nd(1), one Zn(4), two equivalent Zn(2), and three equivalent Zn(1) atoms. The Zn(3)-Zn(4) bond length is 2.71 Å. In the fourth Zn site, Zn(4) is bonded to four equivalent Nd(1), four equivalent Zn(2), and four equivalent Zn(3) atoms to form face-sharing ZnNd4Zn8 cuboctahedra.