GdYCu4 crystallizes in the orthorhombic Imm2 space group. Gd(1) is bonded in a 12-coordinate geometry to six equivalent Cu(1) and six equivalent Cu(2) atoms. Y(1) is bonded in a 12-coordinate geometry to six equivalent Cu(1) and six equivalent Cu(2) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 10-coordinate geometry to three equivalent Gd(1), three equivalent Y(1), one Cu(1), and three equivalent Cu(2) atoms. In the second Cu site, Cu(2) is bonded in a 10-coordinate geometry to three equivalent Gd(1), three equivalent Y(1), one Cu(2), and three equivalent Cu(1) atoms.
GdYCu4 crystallizes in the orthorhombic Imm2 space group. Gd(1) is bonded in a 12-coordinate geometry to six equivalent Cu(1) and six equivalent Cu(2) atoms. There are two shorter (3.05 Å) and four longer (3.12 Å) Gd(1)-Cu(1) bond lengths. All Gd(1)-Cu(2) bond lengths are 2.96 Å. Y(1) is bonded in a 12-coordinate geometry to six equivalent Cu(1) and six equivalent Cu(2) atoms. There are four shorter (2.95 Å) and two longer (2.97 Å) Y(1)-Cu(1) bond lengths. There are two shorter (3.04 Å) and four longer (3.12 Å) Y(1)-Cu(2) bond lengths. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 10-coordinate geometry to three equivalent Gd(1), three equivalent Y(1), one Cu(1), and three equivalent Cu(2) atoms. The Cu(1)-Cu(1) bond length is 2.71 Å. There are two shorter (2.47 Å) and one longer (2.51 Å) Cu(1)-Cu(2) bond length. In the second Cu site, Cu(2) is bonded in a 10-coordinate geometry to three equivalent Gd(1), three equivalent Y(1), one Cu(2), and three equivalent Cu(1) atoms. The Cu(2)-Cu(2) bond length is 2.72 Å.