Sr2B5H3O11 crystallizes in the triclinic P1 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to one O(1), one O(12), one O(16), one O(19), one O(2), one O(21), one O(22), and one O(9) atom. In the second Sr site, Sr(2) is bonded in a 10-coordinate geometry to one H(4), one O(10), one O(13), one O(15), one O(17), one O(18), one O(20), one O(3), one O(4), and one O(6) atom. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(1), one O(11), one O(12), one O(13), one O(14), one O(16), one O(2), one O(3), and one O(8) atom. In the fourth Sr site, Sr(4) is bonded in a 8-coordinate geometry to one O(17), one O(19), one O(20), one O(22), one O(4), one O(5), one O(6), and one O(7) atom. There are ten inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(10), one O(15), and one O(18) atom. In the second B site, B(2) is bonded to one O(17), one O(18), one O(3), and one O(4) atom to form corner-sharing BO4 tetrahedra. In the third B site, B(3) is bonded to one O(14), one O(15), one O(3), and one O(6) atom to form corner-sharing BO4 tetrahedra. In the fourth B site, B(4) is bonded in a trigonal planar geometry to one O(17), one O(5), and one O(7) atom. In the fifth B site, B(5) is bonded in a trigonal planar geometry to one O(16), one O(21), and one O(9) atom. In the sixth B site, B(6) is bonded in a trigonal planar geometry to one O(11), one O(14), and one O(8) atom. In the seventh B site, B(7) is bonded to one O(1), one O(16), one O(19), and one O(5) atom to form corner-sharing BO4 tetrahedra. In the eighth B site, B(8) is bonded to one O(10), one O(11), one O(4), and one O(6) atom to form corner-sharing BO4 tetrahedra. In the ninth B site, B(9) is bonded to one O(1), one O(12), one O(21), and one O(7) atom to form corner-sharing BO4 tetrahedra. In the tenth B site, B(10) is bonded to one O(12), one O(19), one O(8), and one O(9) atom to form corner-sharing BO4 tetrahedra. There are six inequivalent H sites. In the first H site, H(1) is bonded in a linear geometry to one O(13) and one O(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(13) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(2) atom. In the fourth H site, H(4) is bonded in a linear geometry to one Sr(2), one O(20), and one O(22) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(20) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(22) atom. There are twenty-two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Sr(1), one Sr(3), one B(7), and one B(9) atom. In the second O site, O(2) is bonded in a distorted water-like geometry to one Sr(1), one Sr(3), one H(1), and one H(3) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Sr(2), one Sr(3), one B(2), and one B(3) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Sr(2), one Sr(4), one B(2), and one B(8) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Sr(4), one B(4), and one B(7) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Sr(2), one Sr(4), one B(3), and one B(8) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Sr(4), one B(4), and one B(9) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Sr(3), one B(10), and one B(6) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one Sr(1), one B(10), and one B(5) atom. In the tenth O site, O(10) is bonded in a distorted bent 120 degrees geometry to one Sr(2), one B(1), and one B(8) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one Sr(3), one B(6), and one B(8) atom. In the twelfth O site, O(12) is bonded in a distorted bent 120 degrees geometry to one Sr(1), one Sr(3), one B(10), and one B(9) atom. In the thirteenth O site, O(13) is bonded in a distorted water-like geometry to one Sr(2), one Sr(3), one H(1), and one H(2) atom. In the fourteenth O site, O(14) is bonded in a distorted bent 120 degrees geometry to one Sr(3), one B(3), and one B(6) atom. In the fifteenth O site, O(15) is bonded in a distorted bent 120 degrees geometry to one Sr(2), one B(1), and one B(3) atom. In the sixteenth O site, O(16) is bonded in a distorted bent 120 degrees geometry to one Sr(1), one Sr(3), one B(5), and one B(7) atom. In the seventeenth O site, O(17) is bonded in a distorted bent 120 degrees geometry to one Sr(2), one Sr(4), one B(2), and one B(4) atom. In the eighteenth O site, O(18) is bonded in a distorted bent 120 degrees geometry to one Sr(2), one B(1), and one B(2) atom. In the nineteenth O site, O(19) is bonded in a bent 120 degrees geometry to one Sr(1), one Sr(4), one B(10), and one B(7) atom. In the twentieth O site, O(20) is bonded in a distorted water-like geometry to one Sr(2), one Sr(4), one H(4), and one H(5) atom. In the twenty-first O site, O(21) is bonded in a distorted bent 120 degrees geometry to one Sr(1), one B(5), and one B(9) atom. In the twenty-second O site, O(22) is bonded in a distorted water-like geometry to one Sr(1), one Sr(4), one H(4), and one H(6) atom.
Sr2B5H3O11 crystallizes in the triclinic P1 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to one O(1), one O(12), one O(16), one O(19), one O(2), one O(21), one O(22), and one O(9) atom. The Sr(1)-O(1) bond length is 2.72 Å. The Sr(1)-O(12) bond length is 2.64 Å. The Sr(1)-O(16) bond length is 2.92 Å. The Sr(1)-O(19) bond length is 2.79 Å. The Sr(1)-O(2) bond length is 2.56 Å. The Sr(1)-O(21) bond length is 2.54 Å. The Sr(1)-O(22) bond length is 2.58 Å. The Sr(1)-O(9) bond length is 2.58 Å. In the second Sr site, Sr(2) is bonded in a 10-coordinate geometry to one H(4), one O(10), one O(13), one O(15), one O(17), one O(18), one O(20), one O(3), one O(4), and one O(6) atom. The Sr(2)-H(4) bond length is 2.76 Å. The Sr(2)-O(10) bond length is 2.71 Å. The Sr(2)-O(13) bond length is 2.63 Å. The Sr(2)-O(15) bond length is 2.66 Å. The Sr(2)-O(17) bond length is 2.95 Å. The Sr(2)-O(18) bond length is 2.60 Å. The Sr(2)-O(20) bond length is 2.62 Å. The Sr(2)-O(3) bond length is 2.65 Å. The Sr(2)-O(4) bond length is 2.95 Å. The Sr(2)-O(6) bond length is 2.66 Å. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(1), one O(11), one O(12), one O(13), one O(14), one O(16), one O(2), one O(3), and one O(8) atom. The Sr(3)-O(1) bond length is 2.70 Å. The Sr(3)-O(11) bond length is 2.63 Å. The Sr(3)-O(12) bond length is 2.73 Å. The Sr(3)-O(13) bond length is 2.62 Å. The Sr(3)-O(14) bond length is 2.66 Å. The Sr(3)-O(16) bond length is 3.01 Å. The Sr(3)-O(2) bond length is 2.54 Å. The Sr(3)-O(3) bond length is 2.73 Å. The Sr(3)-O(8) bond length is 2.71 Å. In the fourth Sr site, Sr(4) is bonded in a 8-coordinate geometry to one O(17), one O(19), one O(20), one O(22), one O(4), one O(5), one O(6), and one O(7) atom. The Sr(4)-O(17) bond length is 2.89 Å. The Sr(4)-O(19) bond length is 2.77 Å. The Sr(4)-O(20) bond length is 2.51 Å. The Sr(4)-O(22) bond length is 2.54 Å. The Sr(4)-O(4) bond length is 2.77 Å. The Sr(4)-O(5) bond length is 2.54 Å. The Sr(4)-O(6) bond length is 2.61 Å. The Sr(4)-O(7) bond length is 2.60 Å. There are ten inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(10), one O(15), and one O(18) atom. The B(1)-O(10) bond length is 1.38 Å. The B(1)-O(15) bond length is 1.38 Å. The B(1)-O(18) bond length is 1.37 Å. In the second B site, B(2) is bonded to one O(17), one O(18), one O(3), and one O(4) atom to form corner-sharing BO4 tetrahedra. The B(2)-O(17) bond length is 1.52 Å. The B(2)-O(18) bond length is 1.51 Å. The B(2)-O(3) bond length is 1.48 Å. The B(2)-O(4) bond length is 1.45 Å. In the third B site, B(3) is bonded to one O(14), one O(15), one O(3), and one O(6) atom to form corner-sharing BO4 tetrahedra. The B(3)-O(14) bond length is 1.51 Å. The B(3)-O(15) bond length is 1.49 Å. The B(3)-O(3) bond length is 1.47 Å. The B(3)-O(6) bond length is 1.48 Å. In the fourth B site, B(4) is bonded in a trigonal planar geometry to one O(17), one O(5), and one O(7) atom. The B(4)-O(17) bond length is 1.38 Å. The B(4)-O(5) bond length is 1.37 Å. The B(4)-O(7) bond length is 1.39 Å. In the fifth B site, B(5) is bonded in a trigonal planar geometry to one O(16), one O(21), and one O(9) atom. The B(5)-O(16) bond length is 1.38 Å. The B(5)-O(21) bond length is 1.38 Å. The B(5)-O(9) bond length is 1.38 Å. In the sixth B site, B(6) is bonded in a trigonal planar geometry to one O(11), one O(14), and one O(8) atom. The B(6)-O(11) bond length is 1.38 Å. The B(6)-O(14) bond length is 1.38 Å. The B(6)-O(8) bond length is 1.37 Å. In the seventh B site, B(7) is bonded to one O(1), one O(16), one O(19), and one O(5) atom to form corner-sharing BO4 tetrahedra. The B(7)-O(1) bond length is 1.47 Å. The B(7)-O(16) bond length is 1.53 Å. The B(7)-O(19) bond length is 1.45 Å. The B(7)-O(5) bond length is 1.52 Å. In the eighth B site, B(8) is bonded to one O(10), one O(11), one O(4), and one O(6) atom to form corner-sharing BO4 tetrahedra. The B(8)-O(10) bond length is 1.48 Å. The B(8)-O(11) bond length is 1.49 Å. The B(8)-O(4) bond length is 1.47 Å. The B(8)-O(6) bond length is 1.49 Å. In the ninth B site, B(9) is bonded to one O(1), one O(12), one O(21), and one O(7) atom to form corner-sharing BO4 tetrahedra. The B(9)-O(1) bond length is 1.46 Å. The B(9)-O(12) bond length is 1.47 Å. The B(9)-O(21) bond length is 1.51 Å. The B(9)-O(7) bond length is 1.50 Å. In the tenth B site, B(10) is bonded to one O(12), one O(19), one O(8), and one O(9) atom to form corner-sharing BO4 tetrahedra. The B(10)-O(12) bond length is 1.48 Å. The B(10)-O(19) bond length is 1.47 Å. The B(10)-O(8) bond length is 1.48 Å. The B(10)-O(9) bond length is 1.50 Å. There are six inequivalent H sites. In the first H site, H(1) is bonded in a linear geometry to one O(13) and one O(2) atom. The H(1)-O(13) bond length is 1.16 Å. The H(1)-O(2) bond length is 1.29 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(13) atom. The H(2)-O(13) bond length is 0.98 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(2) atom. The H(3)-O(2) bond length is 0.97 Å. In the fourth H site, H(4) is bonded in a linear geometry to one Sr(2), one O(20), and one O(22) atom. The H(4)-O(20) bond length is 1.14 Å. The H(4)-O(22) bond length is 1.30 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(20) atom. The H(5)-O(20) bond length is 0.97 Å. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(22) atom. The H(6)-O(22) bond length is 0.97 Å. There are twenty-two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Sr(1), one Sr(3), one B(7), and one B(9) atom. In the second O site, O(2) is bonded in a distorted water-like geometry to one Sr(1), one Sr(3), one H(1), and one H(3) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Sr(2), one Sr(3), one B(2), and one B(3) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Sr(2), one Sr(4), one B(2), and one B(8) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Sr(4), one B(4), and one B(7) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Sr(2), one Sr(4), one B(3), and one B(8) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Sr(4), one B(4), and one B(9) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Sr(3), one B(10), and one B(6) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one Sr(1), one B(10), and one B(5) atom. In the tenth O site, O(10) is bonded in a distorted bent 120 degrees geometry to one Sr(2), one B(1), and one B(8) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one Sr(3), one B(6), and one B(8) atom. In the twelfth O site, O(12) is bonded in a distorted bent 120 degrees geometry to one Sr(1), one Sr(3), one B(10), and one B(9) atom. In the thirteenth O site, O(13) is bonded in a distorted water-like geometry to one Sr(2), one Sr(3), one H(1), and one H(2) atom. In the fourteenth O site, O(14) is bonded in a distorted bent 120 degrees geometry to one Sr(3), one B(3), and one B(6) atom. In the fifteenth O site, O(15) is bonded in a distorted bent 120 degrees geometry to one Sr(2), one B(1), and one B(3) atom. In the sixteenth O site, O(16) is bonded in a distorted bent 120 degrees geometry to one Sr(1), one Sr(3), one B(5), and one B(7) atom. In the seventeenth O site, O(17) is bonded in a distorted bent 120 degrees geometry to one Sr(2), one Sr(4), one B(2), and one B(4) atom. In the eighteenth O site, O(18) is bonded in a distorted bent 120 degrees geometry to one Sr(2), one B(1), and one B(2) atom. In the nineteenth O site, O(19) is bonded in a bent 120 degrees geometry to one Sr(1), one Sr(4), one B(10), and one B(7) atom. In the twentieth O site, O(20) is bonded in a distorted water-like geometry to one Sr(2), one Sr(4), one H(4), and one H(5) atom. In the twenty-first O site, O(21) is bonded in a distorted bent 120 degrees geometry to one Sr(1), one B(5), and one B(9) atom. In the twenty-second O site, O(22) is bonded in a distorted water-like geometry to one Sr(1), one Sr(4), one H(4), and one H(6) atom.