Bi2(BO3)3 crystallizes in the hexagonal P6_3/m space group. B(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form BO4 tetrahedra that share corners with four equivalent Bi(1)O6 octahedra and corners with two equivalent B(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-55°. Bi(1) is bonded to six equivalent O(2) atoms to form BiO6 octahedra that share corners with six equivalent B(1)O4 tetrahedra and edges with three equivalent Bi(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to two equivalent B(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one B(1) and two equivalent Bi(1) atoms.
Bi2(BO3)3 crystallizes in the hexagonal P6_3/m space group. B(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form BO4 tetrahedra that share corners with four equivalent Bi(1)O6 octahedra and corners with two equivalent B(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-55°. There is one shorter (1.40 Å) and one longer (1.47 Å) B(1)-O(1) bond length. Both B(1)-O(2) bond lengths are 1.52 Å. Bi(1) is bonded to six equivalent O(2) atoms to form BiO6 octahedra that share corners with six equivalent B(1)O4 tetrahedra and edges with three equivalent Bi(1)O6 octahedra. There are three shorter (2.26 Å) and three longer (2.28 Å) Bi(1)-O(2) bond lengths. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to two equivalent B(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one B(1) and two equivalent Bi(1) atoms.