LiSnCAsO7 crystallizes in the monoclinic P2_1 space group. Li(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(5), and one O(6) atom. Sn(1) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form SnO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. As(1) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form AsO4 tetrahedra that share corners with four equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-54°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Li(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Li(1), one Sn(1), and one C(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(1), one Sn(1), and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Sn(1) and one As(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Li(1), one Sn(1), and one As(1) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Li(1), one Sn(1), and one As(1) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Sn(1) and one As(1) atom.
LiSnCAsO7 crystallizes in the monoclinic P2_1 space group. Li(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(5), and one O(6) atom. The Li(1)-O(1) bond length is 1.90 Å. The Li(1)-O(2) bond length is 2.28 Å. The Li(1)-O(3) bond length is 2.13 Å. The Li(1)-O(5) bond length is 2.42 Å. The Li(1)-O(6) bond length is 2.62 Å. Sn(1) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form SnO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra. The Sn(1)-O(2) bond length is 2.12 Å. The Sn(1)-O(3) bond length is 2.12 Å. The Sn(1)-O(4) bond length is 2.05 Å. The Sn(1)-O(5) bond length is 2.09 Å. The Sn(1)-O(6) bond length is 2.08 Å. The Sn(1)-O(7) bond length is 2.06 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 1.24 Å. The C(1)-O(2) bond length is 1.34 Å. The C(1)-O(3) bond length is 1.35 Å. As(1) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form AsO4 tetrahedra that share corners with four equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-54°. The As(1)-O(4) bond length is 1.70 Å. The As(1)-O(5) bond length is 1.71 Å. The As(1)-O(6) bond length is 1.72 Å. The As(1)-O(7) bond length is 1.74 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Li(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Li(1), one Sn(1), and one C(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(1), one Sn(1), and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Sn(1) and one As(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Li(1), one Sn(1), and one As(1) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Li(1), one Sn(1), and one As(1) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Sn(1) and one As(1) atom.