Tb3ReB7 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 11-coordinate geometry to two equivalent Re(1), two equivalent B(1), two equivalent B(3), three equivalent B(2), and four equivalent B(4) atoms. In the second Tb site, Tb(2) is bonded in a 10-coordinate geometry to one Re(1), four equivalent B(3), and six equivalent B(2) atoms. Re(1) is bonded in a 15-coordinate geometry to one Tb(2), four equivalent Tb(1), two equivalent B(1), four equivalent B(3), and four equivalent B(4) atoms. There are four inequivalent B sites. In the first B site, B(1) is bonded in a 8-coordinate geometry to four equivalent Tb(1), two equivalent Re(1), and two equivalent B(4) atoms. In the second B site, B(2) is bonded in a 9-coordinate geometry to three equivalent Tb(1), three equivalent Tb(2), one B(3), and two equivalent B(2) atoms. In the third B site, B(3) is bonded in a 9-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), 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 9-coordinate geometry to four equivalent Tb(1), two equivalent Re(1), one B(1), one B(3), and one B(4) atom.
Tb3ReB7 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 11-coordinate geometry to two equivalent Re(1), two equivalent B(1), two equivalent B(3), three equivalent B(2), and four equivalent B(4) atoms. There is one shorter (3.02 Å) and one longer (3.08 Å) Tb(1)-Re(1) bond length. Both Tb(1)-B(1) bond lengths are 2.71 Å. Both Tb(1)-B(3) bond lengths are 2.69 Å. There is one shorter (2.69 Å) and two longer (2.77 Å) Tb(1)-B(2) bond lengths. There are two shorter (2.66 Å) and two longer (2.69 Å) Tb(1)-B(4) bond lengths. In the second Tb site, Tb(2) is bonded in a 10-coordinate geometry to one Re(1), four equivalent B(3), and six equivalent B(2) atoms. The Tb(2)-Re(1) bond length is 2.98 Å. All Tb(2)-B(3) bond lengths are 2.66 Å. All Tb(2)-B(2) bond lengths are 2.71 Å. Re(1) is bonded in a 15-coordinate geometry to one Tb(2), four equivalent Tb(1), two equivalent B(1), four equivalent B(3), and four equivalent B(4) atoms. Both Re(1)-B(1) bond lengths are 2.33 Å. All Re(1)-B(3) bond lengths are 2.36 Å. All Re(1)-B(4) bond lengths are 2.34 Å. There are four inequivalent B sites. In the first B site, B(1) is bonded in a 8-coordinate geometry to four equivalent Tb(1), two equivalent Re(1), and two equivalent B(4) atoms. Both B(1)-B(4) bond lengths are 1.75 Å. In the second B site, B(2) is bonded in a 9-coordinate geometry to three equivalent Tb(1), three equivalent Tb(2), one B(3), and two equivalent B(2) atoms. The B(2)-B(3) bond length is 1.87 Å. Both B(2)-B(2) bond lengths are 2.02 Å. In the third B site, B(3) is bonded in a 9-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), two equivalent Re(1), one B(2), one B(3), and one B(4) atom. The B(3)-B(3) bond length is 1.86 Å. The B(3)-B(4) bond length is 1.82 Å. In the fourth B site, B(4) is bonded in a 9-coordinate geometry to four equivalent Tb(1), two equivalent Re(1), one B(1), one B(3), and one B(4) atom. The B(4)-B(4) bond length is 1.93 Å.