Na3Nd9O3(BO3)8 crystallizes in the hexagonal P-62m space group. Na(1) is bonded in a distorted hexagonal planar geometry to two equivalent O(4) and four equivalent O(2) atoms. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(2), two equivalent O(4), and four equivalent O(1) atoms. In the second Nd site, Nd(2) is bonded in a 8-coordinate geometry to two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. There are three inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to three equivalent O(4) atoms. In the second B site, B(2) is bonded in a trigonal planar geometry to three equivalent O(2) atoms. In the third B site, B(3) is bonded in a trigonal planar geometry to three equivalent O(1) atoms. There are four inequivalent O sites. In the first O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Na(1), two equivalent Nd(1), and one B(2) atom. In the second O site, O(3) is bonded to two equivalent Nd(1) and two equivalent Nd(2) atoms to form distorted corner-sharing ONd4 trigonal pyramids. In the third O site, O(4) is bonded in a 5-coordinate geometry to one Na(1), one Nd(2), two equivalent Nd(1), and one B(1) atom. In the fourth O site, O(1) is bonded in a distorted single-bond geometry to one Nd(2), two equivalent Nd(1), and one B(3) atom.
Na3Nd9O3(BO3)8 crystallizes in the hexagonal P-62m space group. Na(1) is bonded in a distorted hexagonal planar geometry to two equivalent O(4) and four equivalent O(2) atoms. Both Na(1)-O(4) bond lengths are 2.41 Å. There are two shorter (2.47 Å) and two longer (2.61 Å) Na(1)-O(2) bond lengths. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(2), two equivalent O(4), and four equivalent O(1) atoms. The Nd(1)-O(3) bond length is 2.41 Å. Both Nd(1)-O(2) bond lengths are 2.50 Å. Both Nd(1)-O(4) bond lengths are 2.67 Å. There are two shorter (2.54 Å) and two longer (2.65 Å) Nd(1)-O(1) bond lengths. In the second Nd site, Nd(2) is bonded in a 8-coordinate geometry to two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. Both Nd(2)-O(3) bond lengths are 2.39 Å. Both Nd(2)-O(4) bond lengths are 2.70 Å. All Nd(2)-O(1) bond lengths are 2.41 Å. There are three inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to three equivalent O(4) atoms. All B(1)-O(4) bond lengths are 1.38 Å. In the second B site, B(2) is bonded in a trigonal planar geometry to three equivalent O(2) atoms. All B(2)-O(2) bond lengths are 1.40 Å. In the third B site, B(3) is bonded in a trigonal planar geometry to three equivalent O(1) atoms. All B(3)-O(1) bond lengths are 1.37 Å. There are four inequivalent O sites. In the first O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Na(1), two equivalent Nd(1), and one B(2) atom. In the second O site, O(3) is bonded to two equivalent Nd(1) and two equivalent Nd(2) atoms to form distorted corner-sharing ONd4 trigonal pyramids. In the third O site, O(4) is bonded in a 5-coordinate geometry to one Na(1), one Nd(2), two equivalent Nd(1), and one B(1) atom. In the fourth O site, O(1) is bonded in a distorted single-bond geometry to one Nd(2), two equivalent Nd(1), and one B(3) atom.