Li2CSbPO7 crystallizes in the monoclinic P2_1/m space group. Li(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(4), and one O(6) atom. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. Sb(1) is bonded to one O(2), one O(3), one O(5), and two equivalent O(4) atoms to form distorted SbO5 square pyramids that share corners with three equivalent P(1)O4 tetrahedra. P(1) is bonded to one O(5), one O(6), and two equivalent O(4) atoms to form PO4 tetrahedra that share corners with three equivalent Sb(1)O5 square pyramids. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to two equivalent Li(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted trigonal pyramidal geometry to two equivalent Li(1), one C(1), and one Sb(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one C(1) and one Sb(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Li(1), one Sb(1), and one P(1) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Sb(1) and one P(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Li(1) and one P(1) atom.
Li2CSbPO7 crystallizes in the monoclinic P2_1/m space group. Li(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(4), and one O(6) atom. The Li(1)-O(1) bond length is 2.01 Å. The Li(1)-O(2) bond length is 2.29 Å. The Li(1)-O(4) bond length is 2.06 Å. The Li(1)-O(6) bond length is 2.07 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 1.26 Å. The C(1)-O(2) bond length is 1.35 Å. The C(1)-O(3) bond length is 1.30 Å. Sb(1) is bonded to one O(2), one O(3), one O(5), and two equivalent O(4) atoms to form distorted SbO5 square pyramids that share corners with three equivalent P(1)O4 tetrahedra. The Sb(1)-O(2) bond length is 2.14 Å. The Sb(1)-O(3) bond length is 2.31 Å. The Sb(1)-O(5) bond length is 2.17 Å. Both Sb(1)-O(4) bond lengths are 2.21 Å. P(1) is bonded to one O(5), one O(6), and two equivalent O(4) atoms to form PO4 tetrahedra that share corners with three equivalent Sb(1)O5 square pyramids. The P(1)-O(5) bond length is 1.58 Å. The P(1)-O(6) bond length is 1.52 Å. Both P(1)-O(4) bond lengths are 1.56 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to two equivalent Li(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted trigonal pyramidal geometry to two equivalent Li(1), one C(1), and one Sb(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one C(1) and one Sb(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Li(1), one Sb(1), and one P(1) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Sb(1) and one P(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Li(1) and one P(1) atom.