Gd is alpha Samarium structured and crystallizes in the trigonal R-3m space group. There are three inequivalent Gd sites. In the first Gd site, Gd(1) is bonded to six equivalent Gd(1) and six equivalent Gd(2) atoms to form a mixture of corner, edge, and face-sharing GdGd12 cuboctahedra. In the second Gd site, Gd(2) is bonded to three equivalent Gd(1) and nine Gd(2,2) atoms to form a mixture of corner, edge, and face-sharing GdGd12 cuboctahedra. In the third Gd site, Gd(2) is bonded to three equivalent Gd(1) and nine Gd(2,2) atoms to form a mixture of corner, edge, and face-sharing GdGd12 cuboctahedra.
Gd is alpha Samarium structured and crystallizes in the trigonal R-3m space group. There are three inequivalent Gd sites. In the first Gd site, Gd(1) is bonded to six equivalent Gd(1) and six equivalent Gd(2) atoms to form a mixture of corner, edge, and face-sharing GdGd12 cuboctahedra. All Gd(1)-Gd(1) bond lengths are 3.65 Å. All Gd(1)-Gd(2) bond lengths are 3.62 Å. In the second Gd site, Gd(2) is bonded to three equivalent Gd(1) and nine Gd(2,2) atoms to form a mixture of corner, edge, and face-sharing GdGd12 cuboctahedra. There are six shorter (3.65 Å) and three longer (3.67 Å) Gd(2)-Gd(2,2) bond lengths. In the third Gd site, Gd(2) is bonded to three equivalent Gd(1) and nine Gd(2,2) atoms to form a mixture of corner, edge, and face-sharing GdGd12 cuboctahedra. All Gd(2)-Gd(1) bond lengths are 3.62 Å. All Gd(2)-Gd(2) bond lengths are 3.65 Å.