GdB2HO5 crystallizes in the monoclinic P2_1 space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 9-coordinate geometry to one H(1), one O(1), one O(10), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(9) atom. In the second Gd site, Gd(2) is bonded in a 8-coordinate geometry to one O(10), one O(2), one O(3), one O(4), one O(5), one O(6), one O(8), and one O(9) atom. There are four inequivalent B sites. In the first B site, B(1) is bonded in a tetrahedral geometry to one O(2), one O(4), one O(7), and one O(9) atom. In the second B site, B(2) is bonded in a tetrahedral geometry to one O(1), one O(10), one O(3), and one O(8) atom. In the third B site, B(3) is bonded in a trigonal planar geometry to one O(1), one O(5), and one O(7) atom. In the fourth B site, B(4) is bonded in a trigonal planar geometry to one O(2), one O(6), and one O(8) atom. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one Gd(1) and one O(4) atom. In the second H site, H(2) is bonded in a distorted linear geometry to one O(3) and one O(9) atom. There are ten inequivalent O sites. In the first O site, O(9) is bonded in a 4-coordinate geometry to one Gd(1), one Gd(2), one B(1), and one H(2) atom. In the second O site, O(10) is bonded in a 3-coordinate geometry to one Gd(1), one Gd(2), and one B(2) atom. In the third O site, O(1) is bonded in a 2-coordinate geometry to one Gd(1), one B(2), and one B(3) atom. In the fourth O site, O(2) is bonded in a 2-coordinate geometry to one Gd(2), one B(1), and one B(4) atom. In the fifth O site, O(3) is bonded in a distorted water-like geometry to one Gd(1), one Gd(2), one B(2), and one H(2) atom. In the sixth O site, O(4) is bonded in a distorted water-like geometry to one Gd(1), one Gd(2), one B(1), and one H(1) atom. In the seventh O site, O(5) is bonded in a distorted single-bond geometry to one Gd(1), one Gd(2), and one B(3) atom. In the eighth O site, O(6) is bonded in a distorted trigonal planar geometry to one Gd(1), one Gd(2), and one B(4) atom. In the ninth O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Gd(1), one B(1), and one B(3) atom. In the tenth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Gd(2), one B(2), and one B(4) atom.
GdB2HO5 crystallizes in the monoclinic P2_1 space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 9-coordinate geometry to one H(1), one O(1), one O(10), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(9) atom. The Gd(1)-H(1) bond length is 2.55 Å. The Gd(1)-O(1) bond length is 2.57 Å. The Gd(1)-O(10) bond length is 2.23 Å. The Gd(1)-O(3) bond length is 2.62 Å. The Gd(1)-O(4) bond length is 2.59 Å. The Gd(1)-O(5) bond length is 2.49 Å. The Gd(1)-O(6) bond length is 2.32 Å. The Gd(1)-O(7) bond length is 2.35 Å. The Gd(1)-O(9) bond length is 2.36 Å. In the second Gd site, Gd(2) is bonded in a 8-coordinate geometry to one O(10), one O(2), one O(3), one O(4), one O(5), one O(6), one O(8), and one O(9) atom. The Gd(2)-O(10) bond length is 2.31 Å. The Gd(2)-O(2) bond length is 2.64 Å. The Gd(2)-O(3) bond length is 2.52 Å. The Gd(2)-O(4) bond length is 2.53 Å. The Gd(2)-O(5) bond length is 2.36 Å. The Gd(2)-O(6) bond length is 2.40 Å. The Gd(2)-O(8) bond length is 2.45 Å. The Gd(2)-O(9) bond length is 2.31 Å. There are four inequivalent B sites. In the first B site, B(1) is bonded in a tetrahedral geometry to one O(2), one O(4), one O(7), and one O(9) atom. The B(1)-O(2) bond length is 1.47 Å. The B(1)-O(4) bond length is 1.55 Å. The B(1)-O(7) bond length is 1.50 Å. The B(1)-O(9) bond length is 1.44 Å. In the second B site, B(2) is bonded in a tetrahedral geometry to one O(1), one O(10), one O(3), and one O(8) atom. The B(2)-O(1) bond length is 1.49 Å. The B(2)-O(10) bond length is 1.43 Å. The B(2)-O(3) bond length is 1.54 Å. The B(2)-O(8) bond length is 1.49 Å. In the third B site, B(3) is bonded in a trigonal planar geometry to one O(1), one O(5), and one O(7) atom. The B(3)-O(1) bond length is 1.38 Å. The B(3)-O(5) bond length is 1.35 Å. The B(3)-O(7) bond length is 1.42 Å. In the fourth B site, B(4) is bonded in a trigonal planar geometry to one O(2), one O(6), and one O(8) atom. The B(4)-O(2) bond length is 1.40 Å. The B(4)-O(6) bond length is 1.35 Å. The B(4)-O(8) bond length is 1.41 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one Gd(1) and one O(4) atom. The H(1)-O(4) bond length is 0.99 Å. In the second H site, H(2) is bonded in a distorted linear geometry to one O(3) and one O(9) atom. The H(2)-O(3) bond length is 1.02 Å. The H(2)-O(9) bond length is 1.60 Å. There are ten inequivalent O sites. In the first O site, O(9) is bonded in a 4-coordinate geometry to one Gd(1), one Gd(2), one B(1), and one H(2) atom. In the second O site, O(10) is bonded in a 3-coordinate geometry to one Gd(1), one Gd(2), and one B(2) atom. In the third O site, O(1) is bonded in a 2-coordinate geometry to one Gd(1), one B(2), and one B(3) atom. In the fourth O site, O(2) is bonded in a 2-coordinate geometry to one Gd(2), one B(1), and one B(4) atom. In the fifth O site, O(3) is bonded in a distorted water-like geometry to one Gd(1), one Gd(2), one B(2), and one H(2) atom. In the sixth O site, O(4) is bonded in a distorted water-like geometry to one Gd(1), one Gd(2), one B(1), and one H(1) atom. In the seventh O site, O(5) is bonded in a distorted single-bond geometry to one Gd(1), one Gd(2), and one B(3) atom. In the eighth O site, O(6) is bonded in a distorted trigonal planar geometry to one Gd(1), one Gd(2), and one B(4) atom. In the ninth O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Gd(1), one B(1), and one B(3) atom. In the tenth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Gd(2), one B(2), and one B(4) atom.