Li3SiCBiO7 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), and two equivalent O(4) atoms. In the second Li site, Li(2) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(4), and one O(5) atom. Si(1) is bonded in a tetrahedral geometry to one O(5), one O(6), and two equivalent O(4) atoms. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. Bi(1) is bonded in a 6-coordinate geometry to one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Li(1), two equivalent Li(2), and one C(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Li(1), one C(1), and one Bi(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Li(1), one C(1), and one Bi(1) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Li(2), one Si(1), and one Bi(1) atom. In the fifth O site, O(5) is bonded in a distorted tetrahedral geometry to two equivalent Li(2), one Si(1), and one Bi(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Si(1) and one Bi(1) atom.
Li3SiCBiO7 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), and two equivalent O(4) atoms. The Li(1)-O(1) bond length is 2.11 Å. The Li(1)-O(2) bond length is 2.00 Å. The Li(1)-O(3) bond length is 2.26 Å. Both Li(1)-O(4) bond lengths are 2.42 Å. In the second Li site, Li(2) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(4), and one O(5) atom. The Li(2)-O(1) bond length is 1.96 Å. The Li(2)-O(4) bond length is 1.95 Å. The Li(2)-O(5) bond length is 1.98 Å. Si(1) is bonded in a tetrahedral geometry to one O(5), one O(6), and two equivalent O(4) atoms. The Si(1)-O(5) bond length is 1.66 Å. The Si(1)-O(6) bond length is 1.66 Å. Both Si(1)-O(4) bond lengths are 1.65 Å. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. The C(1)-O(1) bond length is 1.31 Å. The C(1)-O(2) bond length is 1.30 Å. The C(1)-O(3) bond length is 1.29 Å. Bi(1) is bonded in a 6-coordinate geometry to one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms. The Bi(1)-O(2) bond length is 2.60 Å. The Bi(1)-O(3) bond length is 2.49 Å. The Bi(1)-O(5) bond length is 2.35 Å. The Bi(1)-O(6) bond length is 2.31 Å. Both Bi(1)-O(4) bond lengths are 2.35 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Li(1), two equivalent Li(2), and one C(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Li(1), one C(1), and one Bi(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Li(1), one C(1), and one Bi(1) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Li(2), one Si(1), and one Bi(1) atom. In the fifth O site, O(5) is bonded in a distorted tetrahedral geometry to two equivalent Li(2), one Si(1), and one Bi(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Si(1) and one Bi(1) atom.