GdPdCu4 crystallizes in the trigonal R3m space group. Gd(1) is bonded in a 16-coordinate geometry to three equivalent Pd(1), four equivalent Cu(2), and nine equivalent Cu(1) atoms. Pd(1) is bonded to three equivalent Gd(1), three equivalent Cu(2), and six equivalent Cu(1) atoms to form a mixture of edge and corner-sharing PdGd3Cu9 cuboctahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 12-coordinate geometry to three equivalent Gd(1), two equivalent Pd(1), three equivalent Cu(2), and four equivalent Cu(1) atoms. In the second Cu site, Cu(2) is bonded in a 16-coordinate geometry to four equivalent Gd(1), three equivalent Pd(1), and nine equivalent Cu(1) atoms.
GdPdCu4 crystallizes in the trigonal R3m space group. Gd(1) is bonded in a 16-coordinate geometry to three equivalent Pd(1), four equivalent Cu(2), and nine equivalent Cu(1) atoms. All Gd(1)-Pd(1) bond lengths are 2.95 Å. There are three shorter (3.10 Å) and one longer (3.18 Å) Gd(1)-Cu(2) bond length. There are six shorter (2.99 Å) and three longer (3.02 Å) Gd(1)-Cu(1) bond lengths. Pd(1) is bonded to three equivalent Gd(1), three equivalent Cu(2), and six equivalent Cu(1) atoms to form a mixture of edge and corner-sharing PdGd3Cu9 cuboctahedra. All Pd(1)-Cu(2) bond lengths are 2.95 Å. There are three shorter (2.56 Å) and three longer (2.60 Å) Pd(1)-Cu(1) bond lengths. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 12-coordinate geometry to three equivalent Gd(1), two equivalent Pd(1), three equivalent Cu(2), and four equivalent Cu(1) atoms. There are two shorter (2.95 Å) and one longer (3.08 Å) Cu(1)-Cu(2) bond length. There are two shorter (2.50 Å) and two longer (2.52 Å) Cu(1)-Cu(1) bond lengths. In the second Cu site, Cu(2) is bonded in a 16-coordinate geometry to four equivalent Gd(1), three equivalent Pd(1), and nine equivalent Cu(1) atoms.