Gd5(CoAl)2 crystallizes in the orthorhombic Pbam space group. There are three inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 4-coordinate geometry to four equivalent Co(1) and two equivalent Al(1) atoms. In the second Gd site, Gd(2) is bonded in a 6-coordinate geometry to two equivalent Co(1) and four equivalent Al(1) atoms. In the third Gd site, Gd(3) is bonded in a 5-coordinate geometry to one Co(1) and four equivalent Al(1) atoms. Co(1) is bonded in a 9-coordinate geometry to one Gd(2), one Gd(3), four equivalent Gd(1), one Co(1), and two equivalent Al(1) atoms. Al(1) is bonded in a 10-coordinate geometry to two equivalent Gd(1), two equivalent Gd(2), four equivalent Gd(3), and two equivalent Co(1) atoms.
Gd5(CoAl)2 crystallizes in the orthorhombic Pbam space group. There are three inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 4-coordinate geometry to four equivalent Co(1) and two equivalent Al(1) atoms. There are two shorter (2.87 Å) and two longer (2.97 Å) Gd(1)-Co(1) bond lengths. There is one shorter (3.21 Å) and one longer (3.30 Å) Gd(1)-Al(1) bond length. In the second Gd site, Gd(2) is bonded in a 6-coordinate geometry to two equivalent Co(1) and four equivalent Al(1) atoms. Both Gd(2)-Co(1) bond lengths are 2.83 Å. All Gd(2)-Al(1) bond lengths are 3.18 Å. In the third Gd site, Gd(3) is bonded in a 5-coordinate geometry to one Co(1) and four equivalent Al(1) atoms. The Gd(3)-Co(1) bond length is 2.84 Å. There are two shorter (3.19 Å) and two longer (3.22 Å) Gd(3)-Al(1) bond lengths. Co(1) is bonded in a 9-coordinate geometry to one Gd(2), one Gd(3), four equivalent Gd(1), one Co(1), and two equivalent Al(1) atoms. The Co(1)-Co(1) bond length is 2.38 Å. Both Co(1)-Al(1) bond lengths are 2.63 Å. Al(1) is bonded in a 10-coordinate geometry to two equivalent Gd(1), two equivalent Gd(2), four equivalent Gd(3), and two equivalent Co(1) atoms.