Dy2B36Si9C crystallizes in the monoclinic Cm space group. Dy(1) is bonded in a 18-coordinate geometry to one B(1), one B(10), one B(15), one B(17), one B(18), one B(2), one B(20), one B(3), one B(4), one B(6), one B(7), one B(9), one Si(1), one Si(2), one Si(3), one Si(4), one Si(5), and one Si(6) atom. There are twenty inequivalent B sites. In the first B site, B(1) is bonded in a 7-coordinate geometry to one Dy(1), one B(11), one B(15), one B(16), one B(8), one B(9), and one Si(3) atom. In the second B site, B(2) is bonded in a 8-coordinate geometry to two equivalent Dy(1), one B(12), two equivalent B(10), two equivalent B(17), and one Si(4) atom. In the third B site, B(3) is bonded in a 7-coordinate geometry to one Dy(1), one B(13), one B(18), one B(19), one B(5), one B(6), and one Si(1) atom. In the fourth B site, B(4) is bonded in a 8-coordinate geometry to two equivalent Dy(1), one B(14), two equivalent B(20), two equivalent B(7), and one Si(2) atom. In the fifth B site, B(5) is bonded in a 6-coordinate geometry to one B(11), one B(15), one B(19), one B(3), one B(5), and one B(6) atom. In the sixth B site, B(6) is bonded in a 7-coordinate geometry to one Dy(1), one B(11), one B(16), one B(18), one B(3), one B(5), and one B(7) atom. In the seventh B site, B(7) is bonded in a 7-coordinate geometry to one Dy(1), one B(12), one B(17), one B(20), one B(4), one B(6), and one B(7) atom. In the eighth B site, B(8) is bonded in a 6-coordinate geometry to one B(1), one B(13), one B(16), one B(18), one B(8), and one B(9) atom. In the ninth B site, B(9) is bonded in a 7-coordinate geometry to one Dy(1), one B(1), one B(10), one B(13), one B(15), one B(19), and one B(8) atom. In the tenth B site, B(10) is bonded in a 7-coordinate geometry to one Dy(1), one B(10), one B(14), one B(17), one B(2), one B(20), and one B(9) atom. In the eleventh B site, B(11) is bonded in a 6-coordinate geometry to one B(1), one B(15), one B(16), one B(5), one B(6), and one Si(7) atom. In the twelfth B site, B(12) is bonded in a 6-coordinate geometry to one B(2), two equivalent B(17), two equivalent B(7), and one Si(7) atom. In the thirteenth B site, B(13) is bonded in a distorted single-bond geometry to one B(18), one B(19), one B(3), one B(8), one B(9), and one C(1) atom. In the fourteenth B site, B(14) is bonded in a distorted single-bond geometry to one B(4), two equivalent B(10), two equivalent B(20), and one C(1) atom. In the fifteenth B site, B(15) is bonded in a 7-coordinate geometry to one Dy(1), one B(1), one B(11), one B(19), one B(5), one B(9), and one Si(2) atom. In the sixteenth B site, B(16) is bonded in a 6-coordinate geometry to one B(1), one B(11), one B(18), one B(6), one B(8), and one Si(1) atom. In the seventeenth B site, B(17) is bonded in a 7-coordinate geometry to one Dy(1), one B(10), one B(12), one B(2), one B(20), one B(7), and one Si(1) atom. In the eighteenth B site, B(18) is bonded in a 7-coordinate geometry to one Dy(1), one B(13), one B(16), one B(3), one B(6), one B(8), and one Si(4) atom. In the nineteenth B site, B(19) is bonded in a 6-coordinate geometry to one B(13), one B(15), one B(3), one B(5), one B(9), and one Si(3) atom. In the twentieth B site, B(20) is bonded in a 7-coordinate geometry to one Dy(1), one B(10), one B(14), one B(17), one B(4), one B(7), and one Si(3) atom. There are seven inequivalent Si sites. In the first Si site, Si(1) is bonded in a 5-coordinate geometry to one Dy(1), one B(16), one B(17), one B(3), and one Si(5) atom. In the second Si site, Si(2) is bonded in a 6-coordinate geometry to two equivalent Dy(1), one B(4), two equivalent B(15), and one Si(5) atom. In the third Si site, Si(3) is bonded in a 5-coordinate geometry to one Dy(1), one B(1), one B(19), one B(20), and one Si(6) atom. In the fourth Si site, Si(4) is bonded in a 6-coordinate geometry to two equivalent Dy(1), one B(2), two equivalent B(18), and one Si(6) atom. In the fifth Si site, Si(5) is bonded in a 6-coordinate geometry to two equivalent Dy(1), one Si(2), one Si(6), and two equivalent Si(1) atoms. In the sixth Si site, Si(6) is bonded in a distorted tetrahedral geometry to two equivalent Dy(1), one Si(4), one Si(5), and two equivalent Si(3) atoms. In the seventh Si site, Si(7) is bonded in a distorted tetrahedral geometry to one B(12), two equivalent B(11), and one C(1) atom. C(1) is bonded in a tetrahedral geometry to one B(14), two equivalent B(13), and one Si(7) atom.
Dy2B36Si9C crystallizes in the monoclinic Cm space group. Dy(1) is bonded in a 18-coordinate geometry to one B(1), one B(10), one B(15), one B(17), one B(18), one B(2), one B(20), one B(3), one B(4), one B(6), one B(7), one B(9), one Si(1), one Si(2), one Si(3), one Si(4), one Si(5), and one Si(6) atom. The Dy(1)-B(1) bond length is 2.93 Å. The Dy(1)-B(10) bond length is 2.77 Å. The Dy(1)-B(15) bond length is 2.81 Å. The Dy(1)-B(17) bond length is 2.79 Å. The Dy(1)-B(18) bond length is 2.85 Å. The Dy(1)-B(2) bond length is 2.94 Å. The Dy(1)-B(20) bond length is 2.83 Å. The Dy(1)-B(3) bond length is 2.95 Å. The Dy(1)-B(4) bond length is 2.96 Å. The Dy(1)-B(6) bond length is 2.79 Å. The Dy(1)-B(7) bond length is 2.79 Å. The Dy(1)-B(9) bond length is 2.77 Å. The Dy(1)-Si(1) bond length is 2.90 Å. The Dy(1)-Si(2) bond length is 2.87 Å. The Dy(1)-Si(3) bond length is 2.89 Å. The Dy(1)-Si(4) bond length is 2.86 Å. The Dy(1)-Si(5) bond length is 3.32 Å. The Dy(1)-Si(6) bond length is 3.33 Å. There are twenty inequivalent B sites. In the first B site, B(1) is bonded in a 7-coordinate geometry to one Dy(1), one B(11), one B(15), one B(16), one B(8), one B(9), and one Si(3) atom. The B(1)-B(11) bond length is 1.76 Å. The B(1)-B(15) bond length is 1.81 Å. The B(1)-B(16) bond length is 1.80 Å. The B(1)-B(8) bond length is 1.77 Å. The B(1)-B(9) bond length is 1.77 Å. The B(1)-Si(3) bond length is 2.05 Å. In the second B site, B(2) is bonded in a 8-coordinate geometry to two equivalent Dy(1), one B(12), two equivalent B(10), two equivalent B(17), and one Si(4) atom. The B(2)-B(12) bond length is 1.75 Å. Both B(2)-B(10) bond lengths are 1.78 Å. Both B(2)-B(17) bond lengths are 1.83 Å. The B(2)-Si(4) bond length is 2.11 Å. In the third B site, B(3) is bonded in a 7-coordinate geometry to one Dy(1), one B(13), one B(18), one B(19), one B(5), one B(6), and one Si(1) atom. The B(3)-B(13) bond length is 1.87 Å. The B(3)-B(18) bond length is 1.79 Å. The B(3)-B(19) bond length is 1.78 Å. The B(3)-B(5) bond length is 1.81 Å. The B(3)-B(6) bond length is 1.81 Å. The B(3)-Si(1) bond length is 2.06 Å. In the fourth B site, B(4) is bonded in a 8-coordinate geometry to two equivalent Dy(1), one B(14), two equivalent B(20), two equivalent B(7), and one Si(2) atom. The B(4)-B(14) bond length is 1.87 Å. Both B(4)-B(20) bond lengths are 1.80 Å. Both B(4)-B(7) bond lengths are 1.82 Å. The B(4)-Si(2) bond length is 2.12 Å. In the fifth B site, B(5) is bonded in a 6-coordinate geometry to one B(11), one B(15), one B(19), one B(3), one B(5), and one B(6) atom. The B(5)-B(11) bond length is 1.83 Å. The B(5)-B(15) bond length is 1.81 Å. The B(5)-B(19) bond length is 1.81 Å. The B(5)-B(5) bond length is 1.75 Å. The B(5)-B(6) bond length is 1.82 Å. In the sixth B site, B(6) is bonded in a 7-coordinate geometry to one Dy(1), one B(11), one B(16), one B(18), one B(3), one B(5), and one B(7) atom. The B(6)-B(11) bond length is 1.80 Å. The B(6)-B(16) bond length is 1.82 Å. The B(6)-B(18) bond length is 1.80 Å. The B(6)-B(7) bond length is 1.79 Å. In the seventh B site, B(7) is bonded in a 7-coordinate geometry to one Dy(1), one B(12), one B(17), one B(20), one B(4), one B(6), and one B(7) atom. The B(7)-B(12) bond length is 1.81 Å. The B(7)-B(17) bond length is 1.81 Å. The B(7)-B(20) bond length is 1.81 Å. The B(7)-B(7) bond length is 1.82 Å. In the eighth B site, B(8) is bonded in a 6-coordinate geometry to one B(1), one B(13), one B(16), one B(18), one B(8), and one B(9) atom. The B(8)-B(13) bond length is 1.82 Å. The B(8)-B(16) bond length is 1.77 Å. The B(8)-B(18) bond length is 1.81 Å. The B(8)-B(8) bond length is 1.69 Å. The B(8)-B(9) bond length is 1.82 Å. In the ninth B site, B(9) is bonded in a 7-coordinate geometry to one Dy(1), one B(1), one B(10), one B(13), one B(15), one B(19), and one B(8) atom. The B(9)-B(10) bond length is 1.73 Å. The B(9)-B(13) bond length is 1.79 Å. The B(9)-B(15) bond length is 1.77 Å. The B(9)-B(19) bond length is 1.83 Å. In the tenth B site, B(10) is bonded in a 7-coordinate geometry to one Dy(1), one B(10), one B(14), one B(17), one B(2), one B(20), and one B(9) atom. The B(10)-B(10) bond length is 1.82 Å. The B(10)-B(14) bond length is 1.81 Å. The B(10)-B(17) bond length is 1.78 Å. The B(10)-B(20) bond length is 1.82 Å. In the eleventh B site, B(11) is bonded in a 6-coordinate geometry to one B(1), one B(15), one B(16), one B(5), one B(6), and one Si(7) atom. The B(11)-B(15) bond length is 1.74 Å. The B(11)-B(16) bond length is 1.76 Å. The B(11)-Si(7) bond length is 1.96 Å. In the twelfth B site, B(12) is bonded in a 6-coordinate geometry to one B(2), two equivalent B(17), two equivalent B(7), and one Si(7) atom. Both B(12)-B(17) bond lengths are 1.77 Å. The B(12)-Si(7) bond length is 1.95 Å. In the thirteenth B site, B(13) is bonded in a distorted single-bond geometry to one B(18), one B(19), one B(3), one B(8), one B(9), and one C(1) atom. The B(13)-B(18) bond length is 1.79 Å. The B(13)-B(19) bond length is 1.80 Å. The B(13)-C(1) bond length is 1.63 Å. In the fourteenth B site, B(14) is bonded in a distorted single-bond geometry to one B(4), two equivalent B(10), two equivalent B(20), and one C(1) atom. Both B(14)-B(20) bond lengths are 1.82 Å. The B(14)-C(1) bond length is 1.62 Å. In the fifteenth B site, B(15) is bonded in a 7-coordinate geometry to one Dy(1), one B(1), one B(11), one B(19), one B(5), one B(9), and one Si(2) atom. The B(15)-B(19) bond length is 1.78 Å. The B(15)-Si(2) bond length is 2.05 Å. In the sixteenth B site, B(16) is bonded in a 6-coordinate geometry to one B(1), one B(11), one B(18), one B(6), one B(8), and one Si(1) atom. The B(16)-B(18) bond length is 1.78 Å. The B(16)-Si(1) bond length is 2.03 Å. In the seventeenth B site, B(17) is bonded in a 7-coordinate geometry to one Dy(1), one B(10), one B(12), one B(2), one B(20), one B(7), and one Si(1) atom. The B(17)-B(20) bond length is 1.80 Å. The B(17)-Si(1) bond length is 2.10 Å. In the eighteenth B site, B(18) is bonded in a 7-coordinate geometry to one Dy(1), one B(13), one B(16), one B(3), one B(6), one B(8), and one Si(4) atom. The B(18)-Si(4) bond length is 2.04 Å. In the nineteenth B site, B(19) is bonded in a 6-coordinate geometry to one B(13), one B(15), one B(3), one B(5), one B(9), and one Si(3) atom. The B(19)-Si(3) bond length is 2.01 Å. In the twentieth B site, B(20) is bonded in a 7-coordinate geometry to one Dy(1), one B(10), one B(14), one B(17), one B(4), one B(7), and one Si(3) atom. The B(20)-Si(3) bond length is 2.08 Å. There are seven inequivalent Si sites. In the first Si site, Si(1) is bonded in a 5-coordinate geometry to one Dy(1), one B(16), one B(17), one B(3), and one Si(5) atom. The Si(1)-Si(5) bond length is 2.38 Å. In the second Si site, Si(2) is bonded in a 6-coordinate geometry to two equivalent Dy(1), one B(4), two equivalent B(15), and one Si(5) atom. The Si(2)-Si(5) bond length is 2.40 Å. In the third Si site, Si(3) is bonded in a 5-coordinate geometry to one Dy(1), one B(1), one B(19), one B(20), and one Si(6) atom. The Si(3)-Si(6) bond length is 2.38 Å. In the fourth Si site, Si(4) is bonded in a 6-coordinate geometry to two equivalent Dy(1), one B(2), two equivalent B(18), and one Si(6) atom. The Si(4)-Si(6) bond length is 2.40 Å. In the fifth Si site, Si(5) is bonded in a 6-coordinate geometry to two equivalent Dy(1), one Si(2), one Si(6), and two equivalent Si(1) atoms. The Si(5)-Si(6) bond length is 2.36 Å. In the sixth Si site, Si(6) is bonded in a distorted tetrahedral geometry to two equivalent Dy(1), one Si(4), one Si(5), and two equivalent Si(3) atoms. In the seventh Si site, Si(7) is bonded in a distorted tetrahedral geometry to one B(12), two equivalent B(11), and one C(1) atom. The Si(7)-C(1) bond length is 1.83 Å. C(1) is bonded in a tetrahedral geometry to one B(14), two equivalent B(13), and one Si(7) atom.