Y3MnB7 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Y sites. In the first Y site, Y(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 Y site, Y(2) is bonded in a 10-coordinate geometry to four equivalent B(2) and six equivalent B(1) atoms. Mn(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 Y(1), three equivalent Y(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 Y(1), two equivalent Y(2), two equivalent Mn(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 Y(1), two equivalent Mn(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 Y(1), two equivalent Mn(1), and two equivalent B(3) atoms.
Y3MnB7 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Y sites. In the first Y site, Y(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 Y(1)-B(2) bond lengths are 2.66 Å. Both Y(1)-B(4) bond lengths are 2.67 Å. There is one shorter (2.67 Å) and two longer (2.73 Å) Y(1)-B(1) bond lengths. There are two shorter (2.61 Å) and two longer (2.65 Å) Y(1)-B(3) bond lengths. In the second Y site, Y(2) is bonded in a 10-coordinate geometry to four equivalent B(2) and six equivalent B(1) atoms. All Y(2)-B(2) bond lengths are 2.61 Å. There are four shorter (2.67 Å) and two longer (2.68 Å) Y(2)-B(1) bond lengths. Mn(1) is bonded in a 10-coordinate geometry to two equivalent B(4), four equivalent B(2), and four equivalent B(3) atoms. Both Mn(1)-B(4) bond lengths are 2.27 Å. All Mn(1)-B(2) bond lengths are 2.29 Å. All Mn(1)-B(3) bond lengths are 2.28 Å. There are four inequivalent B sites. In the first B site, B(1) is bonded in a 9-coordinate geometry to three equivalent Y(1), three equivalent Y(2), one B(2), and two equivalent B(1) atoms. The B(1)-B(2) bond length is 1.90 Å. Both B(1)-B(1) bond lengths are 1.96 Å. In the second B site, B(2) is bonded in a 9-coordinate geometry to two equivalent Y(1), two equivalent Y(2), two equivalent Mn(1), one B(1), one B(2), and one B(3) atom. The B(2)-B(2) bond length is 1.81 Å. The B(2)-B(3) bond length is 1.78 Å. In the third B site, B(3) is bonded in a 9-coordinate geometry to four equivalent Y(1), two equivalent Mn(1), one B(2), one B(3), and one B(4) atom. The B(3)-B(3) bond length is 1.96 Å. The B(3)-B(4) bond length is 1.72 Å. In the fourth B site, B(4) is bonded in a 8-coordinate geometry to four equivalent Y(1), two equivalent Mn(1), and two equivalent B(3) atoms.