Na2Gd2(BO3)2O crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms to form distorted face-sharing NaO6 octahedra. In the second Na site, Na(2) is bonded in a 5-coordinate geometry to one O(4), one O(6), one O(7), and two equivalent O(5) atoms. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. In the second Gd site, Gd(2) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and two equivalent O(1) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(2), one O(5), and one O(6) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(7) atom. There are seven inequivalent O sites. In the first O site, O(7) is bonded in a distorted single-bond geometry to one Na(2), two equivalent Na(1), one Gd(2), and one B(2) atom. In the second O site, O(1) is bonded to two equivalent Gd(1) and two equivalent Gd(2) atoms to form a mixture of edge and corner-sharing OGd4 tetrahedra. In the third O site, O(2) is bonded in a distorted single-bond geometry to one Gd(2), two equivalent Gd(1), and one B(1) atom. In the fourth O site, O(3) is bonded in a distorted single-bond geometry to one Gd(2), two equivalent Gd(1), and one B(2) atom. In the fifth O site, O(4) is bonded in a distorted single-bond geometry to one Na(2), one Gd(2), two equivalent Gd(1), and one B(2) atom. In the sixth O site, O(5) is bonded in a distorted single-bond geometry to two equivalent Na(1), two equivalent Na(2), one Gd(2), and one B(1) atom. In the seventh O site, O(6) is bonded in a 1-coordinate geometry to one Na(2), two equivalent Na(1), one Gd(2), and one B(1) atom.
Na2Gd2(BO3)2O crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms to form distorted face-sharing NaO6 octahedra. There is one shorter (2.54 Å) and one longer (2.66 Å) Na(1)-O(5) bond length. There is one shorter (2.38 Å) and one longer (2.42 Å) Na(1)-O(6) bond length. There is one shorter (2.36 Å) and one longer (2.47 Å) Na(1)-O(7) bond length. In the second Na site, Na(2) is bonded in a 5-coordinate geometry to one O(4), one O(6), one O(7), and two equivalent O(5) atoms. The Na(2)-O(4) bond length is 2.52 Å. The Na(2)-O(6) bond length is 2.41 Å. The Na(2)-O(7) bond length is 2.38 Å. There is one shorter (2.52 Å) and one longer (2.60 Å) Na(2)-O(5) bond length. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There is one shorter (2.30 Å) and one longer (2.37 Å) Gd(1)-O(1) bond length. There is one shorter (2.39 Å) and one longer (2.44 Å) Gd(1)-O(2) bond length. There is one shorter (2.41 Å) and one longer (2.55 Å) Gd(1)-O(3) bond length. There is one shorter (2.44 Å) and one longer (2.52 Å) Gd(1)-O(4) bond length. In the second Gd site, Gd(2) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and two equivalent O(1) atoms. The Gd(2)-O(2) bond length is 2.43 Å. The Gd(2)-O(3) bond length is 2.44 Å. The Gd(2)-O(4) bond length is 2.67 Å. The Gd(2)-O(5) bond length is 2.49 Å. The Gd(2)-O(6) bond length is 2.53 Å. The Gd(2)-O(7) bond length is 2.49 Å. There is one shorter (2.30 Å) and one longer (2.32 Å) Gd(2)-O(1) bond length. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(2), one O(5), and one O(6) atom. The B(1)-O(2) bond length is 1.42 Å. The B(1)-O(5) bond length is 1.38 Å. The B(1)-O(6) bond length is 1.38 Å. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(7) atom. The B(2)-O(3) bond length is 1.39 Å. The B(2)-O(4) bond length is 1.40 Å. The B(2)-O(7) bond length is 1.37 Å. There are seven inequivalent O sites. In the first O site, O(7) is bonded in a distorted single-bond geometry to one Na(2), two equivalent Na(1), one Gd(2), and one B(2) atom. In the second O site, O(1) is bonded to two equivalent Gd(1) and two equivalent Gd(2) atoms to form a mixture of edge and corner-sharing OGd4 tetrahedra. In the third O site, O(2) is bonded in a distorted single-bond geometry to one Gd(2), two equivalent Gd(1), and one B(1) atom. In the fourth O site, O(3) is bonded in a distorted single-bond geometry to one Gd(2), two equivalent Gd(1), and one B(2) atom. In the fifth O site, O(4) is bonded in a distorted single-bond geometry to one Na(2), one Gd(2), two equivalent Gd(1), and one B(2) atom. In the sixth O site, O(5) is bonded in a distorted single-bond geometry to two equivalent Na(1), two equivalent Na(2), one Gd(2), and one B(1) atom. In the seventh O site, O(6) is bonded in a 1-coordinate geometry to one Na(2), two equivalent Na(1), one Gd(2), and one B(1) atom.