Yb2ZnSb2 is Magnesium tetraboride-derived structured and crystallizes in the monoclinic Pm space group. There are eighteen inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 7-coordinate geometry to two equivalent Zn(5), one Sb(15), one Sb(4), two equivalent Sb(17), and two equivalent Sb(9) atoms. In the second Yb site, Yb(2) is bonded in a 7-coordinate geometry to two equivalent Zn(6), one Sb(3), two equivalent Sb(10), and two equivalent Sb(17) atoms. In the third Yb site, Yb(3) is bonded in a 7-coordinate geometry to two equivalent Zn(7), one Sb(13), one Sb(2), two equivalent Sb(11), and two equivalent Sb(18) atoms. In the fourth Yb site, Yb(4) is bonded in a 7-coordinate geometry to two equivalent Zn(8), one Sb(1), one Sb(14), two equivalent Sb(12), and two equivalent Sb(18) atoms. In the fifth Yb site, Yb(5) is bonded in a 7-coordinate geometry to one Zn(9), one Sb(1), one Sb(4), two equivalent Sb(5), and two equivalent Sb(9) atoms. In the sixth Yb site, Yb(6) is bonded to one Sb(2), one Sb(3), two equivalent Sb(10), and two equivalent Sb(6) atoms to form a mixture of distorted corner and edge-sharing YbSb6 octahedra. The corner-sharing octahedral tilt angles range from 42-43°. In the seventh Yb site, Yb(7) is bonded to one Sb(2), one Sb(3), two equivalent Sb(11), and two equivalent Sb(7) atoms to form a mixture of distorted corner and edge-sharing YbSb6 octahedra. The corner-sharing octahedral tilt angles range from 42-43°. In the eighth Yb site, Yb(8) is bonded to one Sb(1), one Sb(4), two equivalent Sb(12), and two equivalent Sb(8) atoms to form distorted edge-sharing YbSb6 octahedra. In the ninth Yb site, Yb(9) is bonded in a 9-coordinate geometry to one Zn(7), two equivalent Zn(9), one Sb(18), one Sb(5), two equivalent Sb(1), and two equivalent Sb(13) atoms. In the tenth Yb site, Yb(10) is bonded in a 7-coordinate geometry to one Zn(8), one Sb(18), one Sb(6), two equivalent Sb(14), and two equivalent Sb(2) atoms. In the eleventh Yb site, Yb(11) is bonded in a 7-coordinate geometry to one Zn(5), one Sb(17), one Sb(7), two equivalent Sb(15), and two equivalent Sb(3) atoms. In the twelfth Yb site, Yb(12) is bonded in a 7-coordinate geometry to one Zn(6), one Sb(17), one Sb(8), two equivalent Sb(16), and two equivalent Sb(4) atoms. In the thirteenth Yb site, Yb(13) is bonded in a 6-coordinate geometry to one Zn(5), one Zn(6), one Sb(7), one Sb(8), two equivalent Sb(15), and two equivalent Sb(16) atoms. In the fourteenth Yb site, Yb(14) is bonded in a 6-coordinate geometry to one Zn(8), one Sb(5), one Sb(6), two equivalent Sb(13), and two equivalent Sb(14) atoms. In the fifteenth Yb site, Yb(15) is bonded in a 7-coordinate geometry to two equivalent Zn(1), two equivalent Zn(5), one Sb(15), two equivalent Sb(8), and two equivalent Sb(9) atoms. In the sixteenth Yb site, Yb(16) is bonded in a 7-coordinate geometry to two equivalent Zn(2), two equivalent Zn(6), one Sb(16), two equivalent Sb(10), and two equivalent Sb(7) atoms. In the seventeenth Yb site, Yb(17) is bonded in a 7-coordinate geometry to two equivalent Zn(3), one Sb(13), one Sb(3), two equivalent Sb(11), and two equivalent Sb(6) atoms. In the eighteenth Yb site, Yb(18) is bonded in a 7-coordinate geometry to two equivalent Zn(4), two equivalent Zn(8), one Sb(14), two equivalent Sb(12), and two equivalent Sb(5) atoms. There are nine inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 6-coordinate geometry to two equivalent Yb(15), one Sb(8), one Sb(9), and two equivalent Sb(1) atoms. In the second Zn site, Zn(2) is bonded in a 6-coordinate geometry to two equivalent Yb(16), one Sb(10), one Sb(7), and two equivalent Sb(2) atoms. In the third Zn site, Zn(3) is bonded in a 6-coordinate geometry to two equivalent Yb(17), one Sb(11), one Sb(6), and two equivalent Sb(3) atoms. In the fourth Zn site, Zn(4) is bonded in a 6-coordinate geometry to two equivalent Yb(18), one Sb(12), one Sb(5), and two equivalent Sb(4) atoms. In the fifth Zn site, Zn(5) is bonded in a 10-coordinate geometry to one Yb(11), one Yb(13), two equivalent Yb(1), two equivalent Yb(15), one Sb(17), one Sb(9), and two equivalent Sb(15) atoms. In the sixth Zn site, Zn(6) is bonded in a 10-coordinate geometry to one Yb(12), one Yb(13), two equivalent Yb(16), two equivalent Yb(2), one Sb(10), one Sb(17), and two equivalent Sb(16) atoms. In the seventh Zn site, Zn(7) is bonded in a 7-coordinate geometry to one Yb(9), two equivalent Yb(3), one Sb(11), one Sb(18), and two equivalent Sb(13) atoms. In the eighth Zn site, Zn(8) is bonded in a 10-coordinate geometry to one Yb(10), one Yb(14), two equivalent Yb(18), two equivalent Yb(4), one Sb(12), one Sb(18), and two equivalent Sb(14) atoms. In the ninth Zn site, Zn(9) is bonded in a 7-coordinate geometry to one Yb(5), two equivalent Yb(9), one Sb(1), one Sb(13), and two equivalent Sb(5) atoms. There are eighteen inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 8-coordinate geometry to one Yb(4), one Yb(5), one Yb(8), two equivalent Yb(9), one Zn(9), and two equivalent Zn(1) atoms. In the second Sb site, Sb(2) is bonded in a 7-coordinate geometry to one Yb(3), one Yb(6), one Yb(7), two equivalent Yb(10), and two equivalent Zn(2) atoms. In the third Sb site, Sb(3) is bonded in a 8-coordinate geometry to one Yb(17), one Yb(2), one Yb(6), one Yb(7), two equivalent Yb(11), and two equivalent Zn(3) atoms. In the fourth Sb site, Sb(4) is bonded in a 7-coordinate geometry to one Yb(1), one Yb(5), one Yb(8), two equivalent Yb(12), and two equivalent Zn(4) atoms. In the fifth Sb site, Sb(5) is bonded in a 9-coordinate geometry to one Yb(14), one Yb(9), two equivalent Yb(18), two equivalent Yb(5), one Zn(4), and two equivalent Zn(9) atoms. In the sixth Sb site, Sb(6) is bonded to one Yb(10), one Yb(14), two equivalent Yb(17), two equivalent Yb(6), and one Zn(3) atom to form distorted edge-sharing SbYb6Zn pentagonal bipyramids. In the seventh Sb site, Sb(7) is bonded to one Yb(11), one Yb(13), two equivalent Yb(16), two equivalent Yb(7), and one Zn(2) atom to form a mixture of distorted corner and edge-sharing SbYb6Zn pentagonal bipyramids. In the eighth Sb site, Sb(8) is bonded to one Yb(12), one Yb(13), two equivalent Yb(15), two equivalent Yb(8), and one Zn(1) atom to form a mixture of distorted corner and edge-sharing SbYb6Zn pentagonal bipyramids. In the ninth Sb site, Sb(9) is bonded in a 8-coordinate geometry to two equivalent Yb(1), two equivalent Yb(15), two equivalent Yb(5), one Zn(1), and one Zn(5) atom. In the tenth Sb site, Sb(10) is bonded in a 8-coordinate geometry to two equivalent Yb(16), two equivalent Yb(2), two equivalent Yb(6), one Zn(2), and one Zn(6) atom. In the eleventh Sb site, Sb(11) is bonded in a 8-coordinate geometry to two equivalent Yb(17), two equivalent Yb(3), two equivalent Yb(7), one Zn(3), and one Zn(7) atom. In the twelfth Sb site, Sb(12) is bonded in a 8-coordinate geometry to two equivalent Yb(18), two equivalent Yb(4), two equivalent Yb(8), one Zn(4), and one Zn(8) atom. In the thirteenth Sb site, Sb(13) is bonded in a 9-coordinate geometry to one Yb(17), one Yb(3), two equivalent Yb(14), two equivalent Yb(9), one Zn(9), and two equivalent Zn(7) atoms. In the fourteenth Sb site, Sb(14) is bonded in a 8-coordinate geometry to one Yb(18), one Yb(4), two equivalent Yb(10), two equivalent Yb(14), and two equivalent Zn(8) atoms. In the fifteenth Sb site, Sb(15) is bonded in a 8-coordinate geometry to one Yb(1), one Yb(15), two equivalent Yb(11), two equivalent Yb(13), and two equivalent Zn(5) atoms. In the sixteenth Sb site, Sb(16) is bonded in a 7-coordinate geometry to one Yb(16), two equivalent Yb(12), two equivalent Yb(13), and two equivalent Zn(6) atoms. In the seventeenth Sb site, Sb(17) is bonded in a distorted body-centered cubic geometry to one Yb(11), one Yb(12), two equivalent Yb(1), two equivalent Yb(2), one Zn(5), and one Zn(6) atom. In the eighteenth Sb site, Sb(18) is bonded in a distorted body-centered cubic geometry to one Yb(10), one Yb(9), two equivalent Yb(3), two equivalent Yb(4), one Zn(7), and one Zn(8) atom.
Yb2ZnSb2 is Magnesium tetraboride-derived structured and crystallizes in the monoclinic Pm space group. There are eighteen inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 7-coordinate geometry to two equivalent Zn(5), one Sb(15), one Sb(4), two equivalent Sb(17), and two equivalent Sb(9) atoms. Both Yb(1)-Zn(5) bond lengths are 3.09 Å. The Yb(1)-Sb(15) bond length is 3.55 Å. The Yb(1)-Sb(4) bond length is 3.28 Å. Both Yb(1)-Sb(17) bond lengths are 3.06 Å. Both Yb(1)-Sb(9) bond lengths are 3.22 Å. In the second Yb site, Yb(2) is bonded in a 7-coordinate geometry to two equivalent Zn(6), one Sb(3), two equivalent Sb(10), and two equivalent Sb(17) atoms. Both Yb(2)-Zn(6) bond lengths are 3.12 Å. The Yb(2)-Sb(3) bond length is 3.20 Å. Both Yb(2)-Sb(10) bond lengths are 3.19 Å. Both Yb(2)-Sb(17) bond lengths are 3.11 Å. In the third Yb site, Yb(3) is bonded in a 7-coordinate geometry to two equivalent Zn(7), one Sb(13), one Sb(2), two equivalent Sb(11), and two equivalent Sb(18) atoms. Both Yb(3)-Zn(7) bond lengths are 3.11 Å. The Yb(3)-Sb(13) bond length is 3.64 Å. The Yb(3)-Sb(2) bond length is 3.14 Å. Both Yb(3)-Sb(11) bond lengths are 3.19 Å. Both Yb(3)-Sb(18) bond lengths are 3.12 Å. In the fourth Yb site, Yb(4) is bonded in a 7-coordinate geometry to two equivalent Zn(8), one Sb(1), one Sb(14), two equivalent Sb(12), and two equivalent Sb(18) atoms. Both Yb(4)-Zn(8) bond lengths are 3.11 Å. The Yb(4)-Sb(1) bond length is 3.38 Å. The Yb(4)-Sb(14) bond length is 3.54 Å. Both Yb(4)-Sb(12) bond lengths are 3.19 Å. Both Yb(4)-Sb(18) bond lengths are 3.10 Å. In the fifth Yb site, Yb(5) is bonded in a 7-coordinate geometry to one Zn(9), one Sb(1), one Sb(4), two equivalent Sb(5), and two equivalent Sb(9) atoms. The Yb(5)-Zn(9) bond length is 2.91 Å. The Yb(5)-Sb(1) bond length is 3.34 Å. The Yb(5)-Sb(4) bond length is 3.17 Å. Both Yb(5)-Sb(5) bond lengths are 3.31 Å. Both Yb(5)-Sb(9) bond lengths are 3.05 Å. In the sixth Yb site, Yb(6) is bonded to one Sb(2), one Sb(3), two equivalent Sb(10), and two equivalent Sb(6) atoms to form a mixture of distorted corner and edge-sharing YbSb6 octahedra. The corner-sharing octahedral tilt angles range from 42-43°. The Yb(6)-Sb(2) bond length is 3.27 Å. The Yb(6)-Sb(3) bond length is 3.36 Å. Both Yb(6)-Sb(10) bond lengths are 3.16 Å. Both Yb(6)-Sb(6) bond lengths are 3.14 Å. In the seventh Yb site, Yb(7) is bonded to one Sb(2), one Sb(3), two equivalent Sb(11), and two equivalent Sb(7) atoms to form a mixture of distorted corner and edge-sharing YbSb6 octahedra. The corner-sharing octahedral tilt angles range from 42-43°. The Yb(7)-Sb(2) bond length is 3.34 Å. The Yb(7)-Sb(3) bond length is 3.31 Å. Both Yb(7)-Sb(11) bond lengths are 3.20 Å. Both Yb(7)-Sb(7) bond lengths are 3.12 Å. In the eighth Yb site, Yb(8) is bonded to one Sb(1), one Sb(4), two equivalent Sb(12), and two equivalent Sb(8) atoms to form distorted edge-sharing YbSb6 octahedra. The Yb(8)-Sb(1) bond length is 3.55 Å. The Yb(8)-Sb(4) bond length is 3.29 Å. Both Yb(8)-Sb(12) bond lengths are 3.19 Å. Both Yb(8)-Sb(8) bond lengths are 3.11 Å. In the ninth Yb site, Yb(9) is bonded in a 9-coordinate geometry to one Zn(7), two equivalent Zn(9), one Sb(18), one Sb(5), two equivalent Sb(1), and two equivalent Sb(13) atoms. The Yb(9)-Zn(7) bond length is 3.08 Å. Both Yb(9)-Zn(9) bond lengths are 3.03 Å. The Yb(9)-Sb(18) bond length is 3.16 Å. The Yb(9)-Sb(5) bond length is 3.50 Å. Both Yb(9)-Sb(1) bond lengths are 3.13 Å. Both Yb(9)-Sb(13) bond lengths are 3.39 Å. In the tenth Yb site, Yb(10) is bonded in a 7-coordinate geometry to one Zn(8), one Sb(18), one Sb(6), two equivalent Sb(14), and two equivalent Sb(2) atoms. The Yb(10)-Zn(8) bond length is 3.25 Å. The Yb(10)-Sb(18) bond length is 3.39 Å. The Yb(10)-Sb(6) bond length is 3.15 Å. Both Yb(10)-Sb(14) bond lengths are 3.36 Å. Both Yb(10)-Sb(2) bond lengths are 3.20 Å. In the eleventh Yb site, Yb(11) is bonded in a 7-coordinate geometry to one Zn(5), one Sb(17), one Sb(7), two equivalent Sb(15), and two equivalent Sb(3) atoms. The Yb(11)-Zn(5) bond length is 3.14 Å. The Yb(11)-Sb(17) bond length is 3.40 Å. The Yb(11)-Sb(7) bond length is 3.18 Å. Both Yb(11)-Sb(15) bond lengths are 3.31 Å. Both Yb(11)-Sb(3) bond lengths are 3.21 Å. In the twelfth Yb site, Yb(12) is bonded in a 7-coordinate geometry to one Zn(6), one Sb(17), one Sb(8), two equivalent Sb(16), and two equivalent Sb(4) atoms. The Yb(12)-Zn(6) bond length is 3.15 Å. The Yb(12)-Sb(17) bond length is 3.37 Å. The Yb(12)-Sb(8) bond length is 3.25 Å. Both Yb(12)-Sb(16) bond lengths are 3.26 Å. Both Yb(12)-Sb(4) bond lengths are 3.27 Å. In the thirteenth Yb site, Yb(13) is bonded in a 6-coordinate geometry to one Zn(5), one Zn(6), one Sb(7), one Sb(8), two equivalent Sb(15), and two equivalent Sb(16) atoms. The Yb(13)-Zn(5) bond length is 3.51 Å. The Yb(13)-Zn(6) bond length is 3.50 Å. The Yb(13)-Sb(7) bond length is 3.21 Å. The Yb(13)-Sb(8) bond length is 3.32 Å. Both Yb(13)-Sb(15) bond lengths are 3.27 Å. Both Yb(13)-Sb(16) bond lengths are 3.27 Å. In the fourteenth Yb site, Yb(14) is bonded in a 6-coordinate geometry to one Zn(8), one Sb(5), one Sb(6), two equivalent Sb(13), and two equivalent Sb(14) atoms. The Yb(14)-Zn(8) bond length is 3.50 Å. The Yb(14)-Sb(5) bond length is 3.32 Å. The Yb(14)-Sb(6) bond length is 3.14 Å. Both Yb(14)-Sb(13) bond lengths are 3.30 Å. Both Yb(14)-Sb(14) bond lengths are 3.23 Å. In the fifteenth Yb site, Yb(15) is bonded in a 7-coordinate geometry to two equivalent Zn(1), two equivalent Zn(5), one Sb(15), two equivalent Sb(8), and two equivalent Sb(9) atoms. Both Yb(15)-Zn(1) bond lengths are 3.19 Å. Both Yb(15)-Zn(5) bond lengths are 3.52 Å. The Yb(15)-Sb(15) bond length is 3.15 Å. Both Yb(15)-Sb(8) bond lengths are 3.11 Å. Both Yb(15)-Sb(9) bond lengths are 3.20 Å. In the sixteenth Yb site, Yb(16) is bonded in a 7-coordinate geometry to two equivalent Zn(2), two equivalent Zn(6), one Sb(16), two equivalent Sb(10), and two equivalent Sb(7) atoms. Both Yb(16)-Zn(2) bond lengths are 3.12 Å. Both Yb(16)-Zn(6) bond lengths are 3.48 Å. The Yb(16)-Sb(16) bond length is 3.21 Å. Both Yb(16)-Sb(10) bond lengths are 3.19 Å. Both Yb(16)-Sb(7) bond lengths are 3.12 Å. In the seventeenth Yb site, Yb(17) is bonded in a 7-coordinate geometry to two equivalent Zn(3), one Sb(13), one Sb(3), two equivalent Sb(11), and two equivalent Sb(6) atoms. Both Yb(17)-Zn(3) bond lengths are 3.06 Å. The Yb(17)-Sb(13) bond length is 3.18 Å. The Yb(17)-Sb(3) bond length is 3.49 Å. Both Yb(17)-Sb(11) bond lengths are 3.18 Å. Both Yb(17)-Sb(6) bond lengths are 3.11 Å. In the eighteenth Yb site, Yb(18) is bonded in a 7-coordinate geometry to two equivalent Zn(4), two equivalent Zn(8), one Sb(14), two equivalent Sb(12), and two equivalent Sb(5) atoms. Both Yb(18)-Zn(4) bond lengths are 3.16 Å. Both Yb(18)-Zn(8) bond lengths are 3.46 Å. The Yb(18)-Sb(14) bond length is 3.16 Å. Both Yb(18)-Sb(12) bond lengths are 3.18 Å. Both Yb(18)-Sb(5) bond lengths are 3.19 Å. There are nine inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 6-coordinate geometry to two equivalent Yb(15), one Sb(8), one Sb(9), and two equivalent Sb(1) atoms. The Zn(1)-Sb(8) bond length is 2.74 Å. The Zn(1)-Sb(9) bond length is 2.78 Å. Both Zn(1)-Sb(1) bond lengths are 2.76 Å. In the second Zn site, Zn(2) is bonded in a 6-coordinate geometry to two equivalent Yb(16), one Sb(10), one Sb(7), and two equivalent Sb(2) atoms. The Zn(2)-Sb(10) bond length is 2.80 Å. The Zn(2)-Sb(7) bond length is 2.73 Å. Both Zn(2)-Sb(2) bond lengths are 2.70 Å. In the third Zn site, Zn(3) is bonded in a 6-coordinate geometry to two equivalent Yb(17), one Sb(11), one Sb(6), and two equivalent Sb(3) atoms. The Zn(3)-Sb(11) bond length is 2.85 Å. The Zn(3)-Sb(6) bond length is 2.74 Å. Both Zn(3)-Sb(3) bond lengths are 2.68 Å. In the fourth Zn site, Zn(4) is bonded in a 6-coordinate geometry to two equivalent Yb(18), one Sb(12), one Sb(5), and two equivalent Sb(4) atoms. The Zn(4)-Sb(12) bond length is 2.74 Å. The Zn(4)-Sb(5) bond length is 3.00 Å. Both Zn(4)-Sb(4) bond lengths are 2.67 Å. In the fifth Zn site, Zn(5) is bonded in a 10-coordinate geometry to one Yb(11), one Yb(13), two equivalent Yb(1), two equivalent Yb(15), one Sb(17), one Sb(9), and two equivalent Sb(15) atoms. The Zn(5)-Sb(17) bond length is 2.93 Å. The Zn(5)-Sb(9) bond length is 2.68 Å. Both Zn(5)-Sb(15) bond lengths are 2.70 Å. In the sixth Zn site, Zn(6) is bonded in a 10-coordinate geometry to one Yb(12), one Yb(13), two equivalent Yb(16), two equivalent Yb(2), one Sb(10), one Sb(17), and two equivalent Sb(16) atoms. The Zn(6)-Sb(10) bond length is 2.65 Å. The Zn(6)-Sb(17) bond length is 2.96 Å. Both Zn(6)-Sb(16) bond lengths are 2.72 Å. In the seventh Zn site, Zn(7) is bonded in a 7-coordinate geometry to one Yb(9), two equivalent Yb(3), one Sb(11), one Sb(18), and two equivalent Sb(13) atoms. The Zn(7)-Sb(11) bond length is 2.62 Å. The Zn(7)-Sb(18) bond length is 2.88 Å. Both Zn(7)-Sb(13) bond lengths are 2.72 Å. In the eighth Zn site, Zn(8) is bonded in a 10-coordinate geometry to one Yb(10), one Yb(14), two equivalent Yb(18), two equivalent Yb(4), one Sb(12), one Sb(18), and two equivalent Sb(14) atoms. The Zn(8)-Sb(12) bond length is 2.69 Å. The Zn(8)-Sb(18) bond length is 2.94 Å. Both Zn(8)-Sb(14) bond lengths are 2.69 Å. In the ninth Zn site, Zn(9) is bonded in a 7-coordinate geometry to one Yb(5), two equivalent Yb(9), one Sb(1), one Sb(13), and two equivalent Sb(5) atoms. The Zn(9)-Sb(1) bond length is 2.99 Å. The Zn(9)-Sb(13) bond length is 2.64 Å. Both Zn(9)-Sb(5) bond lengths are 2.71 Å. There are eighteen inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 8-coordinate geometry to one Yb(4), one Yb(5), one Yb(8), two equivalent Yb(9), one Zn(9), and two equivalent Zn(1) atoms. In the second Sb site, Sb(2) is bonded in a 7-coordinate geometry to one Yb(3), one Yb(6), one Yb(7), two equivalent Yb(10), and two equivalent Zn(2) atoms. In the third Sb site, Sb(3) is bonded in a 8-coordinate geometry to one Yb(17), one Yb(2), one Yb(6), one Yb(7), two equivalent Yb(11), and two equivalent Zn(3) atoms. In the fourth Sb site, Sb(4) is bonded in a 7-coordinate geometry to one Yb(1), one Yb(5), one Yb(8), two equivalent Yb(12), and two equivalent Zn(4) atoms. In the fifth Sb site, Sb(5) is bonded in a 9-coordinate geometry to one Yb(14), one Yb(9), two equivalent Yb(18), two equivalent Yb(5), one Zn(4), and two equivalent Zn(9) atoms. In the sixth Sb site, Sb(6) is bonded to one Yb(10), one Yb(14), two equivalent Yb(17), two equivalent Yb(6), and one Zn(3) atom to form distorted edge-sharing SbYb6Zn pentagonal bipyramids. In the seventh Sb site, Sb(7) is bonded to one Yb(11), one Yb(13), two equivalent Yb(16), two equivalent Yb(7), and one Zn(2) atom to form a mixture of distorted corner and edge-sharing SbYb6Zn pentagonal bipyramids. In the eighth Sb site, Sb(8) is bonded to one Yb(12), one Yb(13), two equivalent Yb(15), two equivalent Yb(8), and one Zn(1) atom to form a mixture of distorted corner and edge-sharing SbYb6Zn pentagonal bipyramids. In the ninth Sb site, Sb(9) is bonded in a 8-coordinate geometry to two equivalent Yb(1), two equivalent Yb(15), two equivalent Yb(5), one Zn(1), and one Zn(5) atom. In the tenth Sb site, Sb(10) is bonded in a 8-coordinate geometry to two equivalent Yb(16), two equivalent Yb(2), two equivalent Yb(6), one Zn(2), and one Zn(6) atom. In the eleventh Sb site, Sb(11) is bonded in a 8-coordinate geometry to two equivalent Yb(17), two equivalent Yb(3), two equivalent Yb(7), one Zn(3), and one Zn(7) atom. In the twelfth Sb site, Sb(12) is bonded in a 8-coordinate geometry to two equivalent Yb(18), two equivalent Yb(4), two equivalent Yb(8), one Zn(4), and one Zn(8) atom. In the thirteenth Sb site, Sb(13) is bonded in a 9-coordinate geometry to one Yb(17), one Yb(3), two equivalent Yb(14), two equivalent Yb(9), one Zn(9), and two equivalent Zn(7) atoms. In the fourteenth Sb site, Sb(14) is bonded in a 8-coordinate geometry to one Yb(18), one Yb(4), two equivalent Yb(10), two equivalent Yb(14), and two equivalent Zn(8) atoms. In the fifteenth Sb site, Sb(15) is bonded in a 8-coordinate geometry to one Yb(1), one Yb(15), two equivalent Yb(11), two equivalent Yb(13), and two equivalent Zn(5) atoms. In the sixteenth Sb site, Sb(16) is bonded in a 7-coordinate geometry to one Yb(16), two equivalent Yb(12), two equivalent Yb(13), and two equivalent Zn(6) atoms. In the seventeenth Sb site, Sb(17) is bonded in a distorted body-centered cubic geometry to one Yb(11), one Yb(12), two equivalent Yb(1), two equivalent Yb(2), one Zn(5), and one Zn(6) atom. In the eighteenth Sb site, Sb(18) is bonded in a distorted body-centered cubic geometry to one Yb(10), one Yb(9), two equivalent Yb(3), two equivalent Yb(4), one Zn(7), and one Zn(8) atom.