Na3Sc2(BO3)3 crystallizes in the trigonal R-3c space group. Na(1) is bonded in a 8-coordinate geometry to two equivalent O(2) and six equivalent O(1) atoms. Sc(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form distorted face-sharing ScO6 octahedra. B(1) is bonded in a trigonal planar geometry to one O(2) and two equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to three equivalent Na(1), one Sc(1), and one B(1) atom. In the second O site, O(2) is bonded to two equivalent Na(1), two equivalent Sc(1), and one B(1) atom to form distorted face-sharing ONa2Sc2B trigonal bipyramids.
Na3Sc2(BO3)3 crystallizes in the trigonal R-3c space group. Na(1) is bonded in a 8-coordinate geometry to two equivalent O(2) and six equivalent O(1) atoms. Both Na(1)-O(2) bond lengths are 2.52 Å. There are a spread of Na(1)-O(1) bond distances ranging from 2.46-2.85 Å. Sc(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form distorted face-sharing ScO6 octahedra. All Sc(1)-O(1) bond lengths are 2.03 Å. All Sc(1)-O(2) bond lengths are 2.21 Å. B(1) is bonded in a trigonal planar geometry to one O(2) and two equivalent O(1) atoms. The B(1)-O(2) bond length is 1.39 Å. Both B(1)-O(1) bond lengths are 1.38 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to three equivalent Na(1), one Sc(1), and one B(1) atom. In the second O site, O(2) is bonded to two equivalent Na(1), two equivalent Sc(1), and one B(1) atom to form distorted face-sharing ONa2Sc2B trigonal bipyramids.