Dy5BSi2O13 crystallizes in the monoclinic Pm space group. There are eight inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 9-coordinate geometry to one O(16), one O(17), one O(18), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. In the second Dy site, Dy(2) is bonded in a 9-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(13), one O(14), one O(15), one O(2), and one O(3) atom. In the third Dy site, Dy(3) is bonded in a 6-coordinate geometry to one O(15), one O(19), two equivalent O(1), and two equivalent O(6) atoms. In the fourth Dy site, Dy(4) is bonded in a 6-coordinate geometry to one O(13), one O(19), two equivalent O(2), and two equivalent O(4) atoms. In the fifth Dy site, Dy(5) is bonded in a 7-coordinate geometry to one O(14), one O(19), one O(7), two equivalent O(3), and two equivalent O(5) atoms. In the sixth Dy site, Dy(6) is bonded in a 7-coordinate geometry to one O(11), one O(18), one O(20), two equivalent O(3), and two equivalent O(4) atoms. In the seventh Dy site, Dy(7) is bonded in a 7-coordinate geometry to one O(12), one O(16), one O(20), two equivalent O(1), and two equivalent O(5) atoms. In the eighth Dy site, Dy(8) is bonded in a 7-coordinate geometry to one O(10), one O(17), one O(20), two equivalent O(2), and two equivalent O(6) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded in a tetrahedral geometry to one O(13), one O(7), and two equivalent O(1) atoms. In the second B site, B(2) is bonded in a tetrahedral geometry to one O(14), one O(8), and two equivalent O(2) atoms. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded in a tetrahedral geometry to one O(15), one O(9), and two equivalent O(3) atoms. In the second Si site, Si(2) is bonded in a tetrahedral geometry to one O(10), one O(16), and two equivalent O(4) atoms. In the third Si site, Si(3) is bonded in a tetrahedral geometry to one O(11), one O(17), and two equivalent O(5) atoms. In the fourth Si site, Si(4) is bonded in a tetrahedral geometry to one O(12), one O(18), and two equivalent O(6) atoms. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to one Dy(2), one Dy(3), one Dy(7), and one B(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Dy(2), one Dy(4), one Dy(8), and one B(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Dy(2), one Dy(5), one Dy(6), and one Si(1) atom. In the fourth O site, O(4) is bonded in a 1-coordinate geometry to one Dy(1), one Dy(4), one Dy(6), and one Si(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Dy(1), one Dy(5), one Dy(7), and one Si(3) atom. In the sixth O site, O(6) is bonded in a 1-coordinate geometry to one Dy(1), one Dy(3), one Dy(8), and one Si(4) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Dy(5), two equivalent Dy(1), and one B(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to two equivalent Dy(1) and one B(2) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to two equivalent Dy(1) and one Si(1) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Dy(8), two equivalent Dy(2), and one Si(2) atom. In the eleventh O site, O(11) is bonded in a 1-coordinate geometry to one Dy(6), two equivalent Dy(2), and one Si(3) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Dy(7), two equivalent Dy(2), and one Si(4) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one Dy(4), two equivalent Dy(2), and one B(1) atom. In the fourteenth O site, O(14) is bonded in a 4-coordinate geometry to one Dy(5), two equivalent Dy(2), and one B(2) atom. In the fifteenth O site, O(15) is bonded in a distorted tetrahedral geometry to one Dy(3), two equivalent Dy(2), and one Si(1) atom. In the sixteenth O site, O(16) is bonded to one Dy(7), two equivalent Dy(1), and one Si(2) atom to form distorted edge-sharing ODy3Si tetrahedra. In the seventeenth O site, O(17) is bonded to one Dy(8), two equivalent Dy(1), and one Si(3) atom to form distorted edge-sharing ODy3Si tetrahedra. In the eighteenth O site, O(18) is bonded in a 4-coordinate geometry to one Dy(6), two equivalent Dy(1), and one Si(4) atom. In the nineteenth O site, O(19) is bonded in a trigonal planar geometry to one Dy(3), one Dy(4), and one Dy(5) atom. In the twentieth O site, O(20) is bonded in a trigonal planar geometry to one Dy(6), one Dy(7), and one Dy(8) atom.
Dy5BSi2O13 crystallizes in the monoclinic Pm space group. There are eight inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 9-coordinate geometry to one O(16), one O(17), one O(18), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. The Dy(1)-O(16) bond length is 2.40 Å. The Dy(1)-O(17) bond length is 2.37 Å. The Dy(1)-O(18) bond length is 2.48 Å. The Dy(1)-O(4) bond length is 2.84 Å. The Dy(1)-O(5) bond length is 2.62 Å. The Dy(1)-O(6) bond length is 2.81 Å. The Dy(1)-O(7) bond length is 2.31 Å. The Dy(1)-O(8) bond length is 2.29 Å. The Dy(1)-O(9) bond length is 2.31 Å. In the second Dy site, Dy(2) is bonded in a 9-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(13), one O(14), one O(15), one O(2), and one O(3) atom. The Dy(2)-O(1) bond length is 2.71 Å. The Dy(2)-O(10) bond length is 2.32 Å. The Dy(2)-O(11) bond length is 2.38 Å. The Dy(2)-O(12) bond length is 2.40 Å. The Dy(2)-O(13) bond length is 2.31 Å. The Dy(2)-O(14) bond length is 2.33 Å. The Dy(2)-O(15) bond length is 2.38 Å. The Dy(2)-O(2) bond length is 2.58 Å. The Dy(2)-O(3) bond length is 2.85 Å. In the third Dy site, Dy(3) is bonded in a 6-coordinate geometry to one O(15), one O(19), two equivalent O(1), and two equivalent O(6) atoms. The Dy(3)-O(15) bond length is 2.37 Å. The Dy(3)-O(19) bond length is 2.18 Å. Both Dy(3)-O(1) bond lengths are 2.35 Å. Both Dy(3)-O(6) bond lengths are 2.32 Å. In the fourth Dy site, Dy(4) is bonded in a 6-coordinate geometry to one O(13), one O(19), two equivalent O(2), and two equivalent O(4) atoms. The Dy(4)-O(13) bond length is 2.33 Å. The Dy(4)-O(19) bond length is 2.22 Å. Both Dy(4)-O(2) bond lengths are 2.33 Å. Both Dy(4)-O(4) bond lengths are 2.32 Å. In the fifth Dy site, Dy(5) is bonded in a 7-coordinate geometry to one O(14), one O(19), one O(7), two equivalent O(3), and two equivalent O(5) atoms. The Dy(5)-O(14) bond length is 2.43 Å. The Dy(5)-O(19) bond length is 2.20 Å. The Dy(5)-O(7) bond length is 2.62 Å. Both Dy(5)-O(3) bond lengths are 2.46 Å. Both Dy(5)-O(5) bond lengths are 2.27 Å. In the sixth Dy site, Dy(6) is bonded in a 7-coordinate geometry to one O(11), one O(18), one O(20), two equivalent O(3), and two equivalent O(4) atoms. The Dy(6)-O(11) bond length is 2.73 Å. The Dy(6)-O(18) bond length is 2.38 Å. The Dy(6)-O(20) bond length is 2.20 Å. Both Dy(6)-O(3) bond lengths are 2.28 Å. Both Dy(6)-O(4) bond lengths are 2.41 Å. In the seventh Dy site, Dy(7) is bonded in a 7-coordinate geometry to one O(12), one O(16), one O(20), two equivalent O(1), and two equivalent O(5) atoms. The Dy(7)-O(12) bond length is 2.62 Å. The Dy(7)-O(16) bond length is 2.36 Å. The Dy(7)-O(20) bond length is 2.21 Å. Both Dy(7)-O(1) bond lengths are 2.32 Å. Both Dy(7)-O(5) bond lengths are 2.47 Å. In the eighth Dy site, Dy(8) is bonded in a 7-coordinate geometry to one O(10), one O(17), one O(20), two equivalent O(2), and two equivalent O(6) atoms. The Dy(8)-O(10) bond length is 2.64 Å. The Dy(8)-O(17) bond length is 2.34 Å. The Dy(8)-O(20) bond length is 2.22 Å. Both Dy(8)-O(2) bond lengths are 2.36 Å. Both Dy(8)-O(6) bond lengths are 2.43 Å. There are two inequivalent B sites. In the first B site, B(1) is bonded in a tetrahedral geometry to one O(13), one O(7), and two equivalent O(1) atoms. The B(1)-O(13) bond length is 1.50 Å. The B(1)-O(7) bond length is 1.50 Å. Both B(1)-O(1) bond lengths are 1.51 Å. In the second B site, B(2) is bonded in a tetrahedral geometry to one O(14), one O(8), and two equivalent O(2) atoms. The B(2)-O(14) bond length is 1.51 Å. The B(2)-O(8) bond length is 1.48 Å. Both B(2)-O(2) bond lengths are 1.53 Å. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded in a tetrahedral geometry to one O(15), one O(9), and two equivalent O(3) atoms. The Si(1)-O(15) bond length is 1.64 Å. The Si(1)-O(9) bond length is 1.63 Å. Both Si(1)-O(3) bond lengths are 1.64 Å. In the second Si site, Si(2) is bonded in a tetrahedral geometry to one O(10), one O(16), and two equivalent O(4) atoms. The Si(2)-O(10) bond length is 1.63 Å. The Si(2)-O(16) bond length is 1.63 Å. Both Si(2)-O(4) bond lengths are 1.63 Å. In the third Si site, Si(3) is bonded in a tetrahedral geometry to one O(11), one O(17), and two equivalent O(5) atoms. The Si(3)-O(11) bond length is 1.61 Å. The Si(3)-O(17) bond length is 1.64 Å. Both Si(3)-O(5) bond lengths are 1.63 Å. In the fourth Si site, Si(4) is bonded in a tetrahedral geometry to one O(12), one O(18), and two equivalent O(6) atoms. The Si(4)-O(12) bond length is 1.63 Å. The Si(4)-O(18) bond length is 1.64 Å. Both Si(4)-O(6) bond lengths are 1.64 Å. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to one Dy(2), one Dy(3), one Dy(7), and one B(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Dy(2), one Dy(4), one Dy(8), and one B(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Dy(2), one Dy(5), one Dy(6), and one Si(1) atom. In the fourth O site, O(4) is bonded in a 1-coordinate geometry to one Dy(1), one Dy(4), one Dy(6), and one Si(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Dy(1), one Dy(5), one Dy(7), and one Si(3) atom. In the sixth O site, O(6) is bonded in a 1-coordinate geometry to one Dy(1), one Dy(3), one Dy(8), and one Si(4) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Dy(5), two equivalent Dy(1), and one B(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to two equivalent Dy(1) and one B(2) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to two equivalent Dy(1) and one Si(1) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Dy(8), two equivalent Dy(2), and one Si(2) atom. In the eleventh O site, O(11) is bonded in a 1-coordinate geometry to one Dy(6), two equivalent Dy(2), and one Si(3) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Dy(7), two equivalent Dy(2), and one Si(4) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one Dy(4), two equivalent Dy(2), and one B(1) atom. In the fourteenth O site, O(14) is bonded in a 4-coordinate geometry to one Dy(5), two equivalent Dy(2), and one B(2) atom. In the fifteenth O site, O(15) is bonded in a distorted tetrahedral geometry to one Dy(3), two equivalent Dy(2), and one Si(1) atom. In the sixteenth O site, O(16) is bonded to one Dy(7), two equivalent Dy(1), and one Si(2) atom to form distorted edge-sharing ODy3Si tetrahedra. In the seventeenth O site, O(17) is bonded to one Dy(8), two equivalent Dy(1), and one Si(3) atom to form distorted edge-sharing ODy3Si tetrahedra. In the eighteenth O site, O(18) is bonded in a 4-coordinate geometry to one Dy(6), two equivalent Dy(1), and one Si(4) atom. In the nineteenth O site, O(19) is bonded in a trigonal planar geometry to one Dy(3), one Dy(4), and one Dy(5) atom. In the twentieth O site, O(20) is bonded in a trigonal planar geometry to one Dy(6), one Dy(7), and one Dy(8) atom.