SmB3O6 crystallizes in the monoclinic C2/c space group. Sm(1) is bonded in a 10-coordinate geometry to two equivalent O(2), four equivalent O(1), and four equivalent O(3) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. In the second B site, B(2) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(2) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Sm(1), one B(1), and one B(2) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Sm(1), one B(1), and one B(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Sm(1) and one B(1) atom.
SmB3O6 crystallizes in the monoclinic C2/c space group. Sm(1) is bonded in a 10-coordinate geometry to two equivalent O(2), four equivalent O(1), and four equivalent O(3) atoms. Both Sm(1)-O(2) bond lengths are 2.50 Å. There are two shorter (2.53 Å) and two longer (2.77 Å) Sm(1)-O(1) bond lengths. There are two shorter (2.34 Å) and two longer (2.51 Å) Sm(1)-O(3) bond lengths. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. The B(1)-O(1) bond length is 1.41 Å. The B(1)-O(2) bond length is 1.38 Å. The B(1)-O(3) bond length is 1.33 Å. In the second B site, B(2) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(2) atoms. Both B(2)-O(1) bond lengths are 1.48 Å. Both B(2)-O(2) bond lengths are 1.45 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Sm(1), one B(1), and one B(2) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Sm(1), one B(1), and one B(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Sm(1) and one B(1) atom.