CeAl(NiCu)2 crystallizes in the orthorhombic Amm2 space group. Ce(1) is bonded in a 18-coordinate geometry to eight equivalent Ni(1), three equivalent Cu(1), four equivalent Cu(2), and three equivalent Al(1) atoms. Ni(1) is bonded to four equivalent Ce(1), two equivalent Ni(1), two equivalent Cu(1), two equivalent Cu(2), and two equivalent Al(1) atoms to form distorted NiCe4Al2Cu4Ni2 cuboctahedra that share corners with four equivalent Cu(1)Ce3Al3Cu2Ni4 cuboctahedra, corners with four equivalent Cu(2)Ce4Al2Cu2Ni4 cuboctahedra, corners with twelve equivalent Ni(1)Ce4Al2Cu4Ni2 cuboctahedra, edges with four equivalent Cu(2)Ce4Al2Cu2Ni4 cuboctahedra, edges with six equivalent Ni(1)Ce4Al2Cu4Ni2 cuboctahedra, faces with four equivalent Cu(2)Ce4Al2Cu2Ni4 cuboctahedra, faces with six equivalent Ni(1)Ce4Al2Cu4Ni2 cuboctahedra, and faces with six equivalent Cu(1)Ce3Al3Cu2Ni4 cuboctahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to three equivalent Ce(1), four equivalent Ni(1), two equivalent Cu(2), and three equivalent Al(1) atoms to form distorted CuCe3Al3Cu2Ni4 cuboctahedra that share corners with four equivalent Cu(2)Ce4Al2Cu2Ni4 cuboctahedra, corners with eight equivalent Ni(1)Ce4Al2Cu4Ni2 cuboctahedra, edges with six equivalent Cu(1)Ce3Al3Cu2Ni4 cuboctahedra, faces with two equivalent Cu(1)Ce3Al3Cu2Ni4 cuboctahedra, faces with six equivalent Cu(2)Ce4Al2Cu2Ni4 cuboctahedra, and faces with twelve equivalent Ni(1)Ce4Al2Cu4Ni2 cuboctahedra. In the second Cu site, Cu(2) is bonded to four equivalent Ce(1), four equivalent Ni(1), two equivalent Cu(1), and two equivalent Al(1) atoms to form distorted CuCe4Al2Cu2Ni4 cuboctahedra that share corners with four equivalent Cu(1)Ce3Al3Cu2Ni4 cuboctahedra, corners with eight equivalent Ni(1)Ce4Al2Cu4Ni2 cuboctahedra, corners with eight equivalent Cu(2)Ce4Al2Cu2Ni4 cuboctahedra, edges with two equivalent Cu(2)Ce4Al2Cu2Ni4 cuboctahedra, edges with eight equivalent Ni(1)Ce4Al2Cu4Ni2 cuboctahedra, faces with two equivalent Cu(2)Ce4Al2Cu2Ni4 cuboctahedra, faces with six equivalent Cu(1)Ce3Al3Cu2Ni4 cuboctahedra, and faces with eight equivalent Ni(1)Ce4Al2Cu4Ni2 cuboctahedra. Al(1) is bonded in a 12-coordinate geometry to three equivalent Ce(1), four equivalent Ni(1), two equivalent Cu(2), and three equivalent Cu(1) atoms.
CeAl(NiCu)2 crystallizes in the orthorhombic Amm2 space group. Ce(1) is bonded in a 18-coordinate geometry to eight equivalent Ni(1), three equivalent Cu(1), four equivalent Cu(2), and three equivalent Al(1) atoms. There are four shorter (3.22 Å) and four longer (3.28 Å) Ce(1)-Ni(1) bond lengths. There is one shorter (2.94 Å) and two longer (3.00 Å) Ce(1)-Cu(1) bond lengths. All Ce(1)-Cu(2) bond lengths are 3.26 Å. There is one shorter (2.95 Å) and two longer (3.00 Å) Ce(1)-Al(1) bond lengths. Ni(1) is bonded to four equivalent Ce(1), two equivalent Ni(1), two equivalent Cu(1), two equivalent Cu(2), and two equivalent Al(1) atoms to form distorted NiCe4Al2Cu4Ni2 cuboctahedra that share corners with four equivalent Cu(1)Ce3Al3Cu2Ni4 cuboctahedra, corners with four equivalent Cu(2)Ce4Al2Cu2Ni4 cuboctahedra, corners with twelve equivalent Ni(1)Ce4Al2Cu4Ni2 cuboctahedra, edges with four equivalent Cu(2)Ce4Al2Cu2Ni4 cuboctahedra, edges with six equivalent Ni(1)Ce4Al2Cu4Ni2 cuboctahedra, faces with four equivalent Cu(2)Ce4Al2Cu2Ni4 cuboctahedra, faces with six equivalent Ni(1)Ce4Al2Cu4Ni2 cuboctahedra, and faces with six equivalent Cu(1)Ce3Al3Cu2Ni4 cuboctahedra. There is one shorter (2.58 Å) and one longer (2.60 Å) Ni(1)-Ni(1) bond length. Both Ni(1)-Cu(1) bond lengths are 2.48 Å. There is one shorter (2.57 Å) and one longer (2.58 Å) Ni(1)-Cu(2) bond length. Both Ni(1)-Al(1) bond lengths are 2.47 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to three equivalent Ce(1), four equivalent Ni(1), two equivalent Cu(2), and three equivalent Al(1) atoms to form distorted CuCe3Al3Cu2Ni4 cuboctahedra that share corners with four equivalent Cu(2)Ce4Al2Cu2Ni4 cuboctahedra, corners with eight equivalent Ni(1)Ce4Al2Cu4Ni2 cuboctahedra, edges with six equivalent Cu(1)Ce3Al3Cu2Ni4 cuboctahedra, faces with two equivalent Cu(1)Ce3Al3Cu2Ni4 cuboctahedra, faces with six equivalent Cu(2)Ce4Al2Cu2Ni4 cuboctahedra, and faces with twelve equivalent Ni(1)Ce4Al2Cu4Ni2 cuboctahedra. Both Cu(1)-Cu(2) bond lengths are 2.47 Å. There are two shorter (2.96 Å) and one longer (3.03 Å) Cu(1)-Al(1) bond length. In the second Cu site, Cu(2) is bonded to four equivalent Ce(1), four equivalent Ni(1), two equivalent Cu(1), and two equivalent Al(1) atoms to form distorted CuCe4Al2Cu2Ni4 cuboctahedra that share corners with four equivalent Cu(1)Ce3Al3Cu2Ni4 cuboctahedra, corners with eight equivalent Ni(1)Ce4Al2Cu4Ni2 cuboctahedra, corners with eight equivalent Cu(2)Ce4Al2Cu2Ni4 cuboctahedra, edges with two equivalent Cu(2)Ce4Al2Cu2Ni4 cuboctahedra, edges with eight equivalent Ni(1)Ce4Al2Cu4Ni2 cuboctahedra, faces with two equivalent Cu(2)Ce4Al2Cu2Ni4 cuboctahedra, faces with six equivalent Cu(1)Ce3Al3Cu2Ni4 cuboctahedra, and faces with eight equivalent Ni(1)Ce4Al2Cu4Ni2 cuboctahedra. Both Cu(2)-Al(1) bond lengths are 2.52 Å. Al(1) is bonded in a 12-coordinate geometry to three equivalent Ce(1), four equivalent Ni(1), two equivalent Cu(2), and three equivalent Cu(1) atoms.