Ru11B8 crystallizes in the orthorhombic Pbam space group. There are six inequivalent Ru sites. In the first Ru site, Ru(6) is bonded in a 4-coordinate geometry to one B(1), one B(3), one B(4), and two equivalent B(2) atoms. In the second Ru site, Ru(1) is bonded in a distorted square co-planar geometry to four equivalent B(1) atoms. In the third Ru site, Ru(2) is bonded in a 6-coordinate geometry to two equivalent B(1), two equivalent B(3), and two equivalent B(4) atoms. In the fourth Ru site, Ru(3) is bonded in a distorted trigonal non-coplanar geometry to one B(2) and two equivalent B(3) atoms. In the fifth Ru site, Ru(4) is bonded in a 6-coordinate geometry to two equivalent B(1), two equivalent B(3), and two equivalent B(4) atoms. In the sixth Ru site, Ru(5) is bonded in a 4-coordinate geometry to one B(3), one B(4), and two equivalent B(2) atoms. There are four inequivalent B sites. In the first B site, B(1) is bonded in a 7-coordinate geometry to one Ru(6), two equivalent Ru(1), two equivalent Ru(2), and two equivalent Ru(4) atoms. In the second B site, B(2) is bonded in a 7-coordinate geometry to one Ru(3), two equivalent Ru(5), two equivalent Ru(6), and two equivalent B(4) atoms. In the third B site, B(3) is bonded in a 9-coordinate geometry to one Ru(5), one Ru(6), two equivalent Ru(2), two equivalent Ru(3), two equivalent Ru(4), and one B(4) atom. In the fourth B site, B(4) is bonded in a 9-coordinate geometry to one Ru(5), one Ru(6), two equivalent Ru(2), two equivalent Ru(4), one B(3), and two equivalent B(2) atoms.
Ru11B8 crystallizes in the orthorhombic Pbam space group. There are six inequivalent Ru sites. In the first Ru site, Ru(6) is bonded in a 4-coordinate geometry to one B(1), one B(3), one B(4), and two equivalent B(2) atoms. The Ru(6)-B(1) bond length is 2.23 Å. The Ru(6)-B(3) bond length is 2.76 Å. The Ru(6)-B(4) bond length is 2.27 Å. Both Ru(6)-B(2) bond lengths are 2.26 Å. In the second Ru site, Ru(1) is bonded in a distorted square co-planar geometry to four equivalent B(1) atoms. All Ru(1)-B(1) bond lengths are 2.25 Å. In the third Ru site, Ru(2) is bonded in a 6-coordinate geometry to two equivalent B(1), two equivalent B(3), and two equivalent B(4) atoms. Both Ru(2)-B(1) bond lengths are 2.32 Å. Both Ru(2)-B(3) bond lengths are 2.29 Å. Both Ru(2)-B(4) bond lengths are 2.32 Å. In the fourth Ru site, Ru(3) is bonded in a distorted trigonal non-coplanar geometry to one B(2) and two equivalent B(3) atoms. The Ru(3)-B(2) bond length is 2.19 Å. Both Ru(3)-B(3) bond lengths are 2.12 Å. In the fifth Ru site, Ru(4) is bonded in a 6-coordinate geometry to two equivalent B(1), two equivalent B(3), and two equivalent B(4) atoms. Both Ru(4)-B(1) bond lengths are 2.32 Å. Both Ru(4)-B(3) bond lengths are 2.27 Å. Both Ru(4)-B(4) bond lengths are 2.21 Å. In the sixth Ru site, Ru(5) is bonded in a 4-coordinate geometry to one B(3), one B(4), and two equivalent B(2) atoms. The Ru(5)-B(3) bond length is 2.53 Å. The Ru(5)-B(4) bond length is 2.15 Å. Both Ru(5)-B(2) bond lengths are 2.23 Å. There are four inequivalent B sites. In the first B site, B(1) is bonded in a 7-coordinate geometry to one Ru(6), two equivalent Ru(1), two equivalent Ru(2), and two equivalent Ru(4) atoms. In the second B site, B(2) is bonded in a 7-coordinate geometry to one Ru(3), two equivalent Ru(5), two equivalent Ru(6), and two equivalent B(4) atoms. Both B(2)-B(4) bond lengths are 1.80 Å. In the third B site, B(3) is bonded in a 9-coordinate geometry to one Ru(5), one Ru(6), two equivalent Ru(2), two equivalent Ru(3), two equivalent Ru(4), and one B(4) atom. The B(3)-B(4) bond length is 2.01 Å. In the fourth B site, B(4) is bonded in a 9-coordinate geometry to one Ru(5), one Ru(6), two equivalent Ru(2), two equivalent Ru(4), one B(3), and two equivalent B(2) atoms.