Gd3ReB7 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 11-coordinate geometry to two equivalent B(2), two equivalent B(4), three equivalent B(1), and four equivalent B(3) atoms. In the second Gd site, Gd(2) is bonded in a 10-coordinate geometry to four equivalent B(2) and six equivalent B(1) atoms. Re(1) is bonded in a 10-coordinate geometry to two equivalent B(4), four equivalent B(2), and four equivalent B(3) atoms. There are four inequivalent B sites. In the first B site, B(1) is bonded in a 9-coordinate geometry to three equivalent Gd(1), three equivalent Gd(2), one B(2), and two equivalent B(1) atoms. In the second B site, B(2) is bonded in a 9-coordinate geometry to two equivalent Gd(1), two equivalent Gd(2), two equivalent Re(1), one B(1), one B(2), and one B(3) atom. In the third B site, B(3) is bonded in a 9-coordinate geometry to four equivalent Gd(1), two equivalent Re(1), one B(2), one B(3), and one B(4) atom. In the fourth B site, B(4) is bonded in a 8-coordinate geometry to four equivalent Gd(1), two equivalent Re(1), and two equivalent B(3) atoms.
Gd3ReB7 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 11-coordinate geometry to two equivalent B(2), two equivalent B(4), three equivalent B(1), and four equivalent B(3) atoms. Both Gd(1)-B(2) bond lengths are 2.71 Å. Both Gd(1)-B(4) bond lengths are 2.72 Å. There is one shorter (2.70 Å) and two longer (2.78 Å) Gd(1)-B(1) bond lengths. There are two shorter (2.67 Å) and two longer (2.72 Å) Gd(1)-B(3) bond lengths. In the second Gd site, Gd(2) is bonded in a 10-coordinate geometry to four equivalent B(2) and six equivalent B(1) atoms. All Gd(2)-B(2) bond lengths are 2.69 Å. There are two shorter (2.71 Å) and four longer (2.73 Å) Gd(2)-B(1) bond lengths. Re(1) is bonded in a 10-coordinate geometry to two equivalent B(4), four equivalent B(2), and four equivalent B(3) atoms. Both Re(1)-B(4) bond lengths are 2.33 Å. All Re(1)-B(2) bond lengths are 2.37 Å. All Re(1)-B(3) bond lengths are 2.35 Å. There are four inequivalent B sites. In the first B site, B(1) is bonded in a 9-coordinate geometry to three equivalent Gd(1), three equivalent Gd(2), one B(2), and two equivalent B(1) atoms. The B(1)-B(2) bond length is 1.88 Å. Both B(1)-B(1) bond lengths are 2.02 Å. In the second B site, B(2) is bonded in a 9-coordinate geometry to two equivalent Gd(1), two equivalent Gd(2), two equivalent Re(1), one B(1), one B(2), and one B(3) atom. The B(2)-B(2) bond length is 1.88 Å. The B(2)-B(3) bond length is 1.85 Å. In the third B site, B(3) is bonded in a 9-coordinate geometry to four equivalent Gd(1), two equivalent Re(1), one B(2), one B(3), and one B(4) atom. The B(3)-B(3) bond length is 1.93 Å. The B(3)-B(4) bond length is 1.77 Å. In the fourth B site, B(4) is bonded in a 8-coordinate geometry to four equivalent Gd(1), two equivalent Re(1), and two equivalent B(3) atoms.