NaCSbAsO7 crystallizes in the monoclinic P2_1 space group. Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(7) 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(4), one O(5), one O(6), and one O(7) atom to form SbO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra. 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 Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-50°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Na(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Na(1), one C(1), and one Sb(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(1), one C(1), and one Sb(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Sb(1) and one As(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Na(1), one Sb(1), and one As(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(1), one Sb(1), and one As(1) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Na(1), one Sb(1), and one As(1) atom.
NaCSbAsO7 crystallizes in the monoclinic P2_1 space group. Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(7) atom. The Na(1)-O(1) bond length is 2.22 Å. The Na(1)-O(2) bond length is 2.54 Å. The Na(1)-O(3) bond length is 2.44 Å. The Na(1)-O(5) bond length is 2.63 Å. The Na(1)-O(6) bond length is 2.55 Å. The Na(1)-O(7) bond length is 2.98 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 1.23 Å. The C(1)-O(2) bond length is 1.35 Å. The C(1)-O(3) bond length is 1.35 Å. Sb(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 SbO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra. The Sb(1)-O(2) bond length is 2.10 Å. The Sb(1)-O(3) bond length is 2.14 Å. The Sb(1)-O(4) bond length is 2.09 Å. The Sb(1)-O(5) bond length is 2.14 Å. The Sb(1)-O(6) bond length is 2.15 Å. The Sb(1)-O(7) bond length is 2.20 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 Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-50°. The As(1)-O(4) bond length is 1.73 Å. The As(1)-O(5) bond length is 1.73 Å. The As(1)-O(6) bond length is 1.73 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 distorted bent 120 degrees geometry to one Na(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Na(1), one C(1), and one Sb(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(1), one C(1), and one Sb(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Sb(1) and one As(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Na(1), one Sb(1), and one As(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(1), one Sb(1), and one As(1) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Na(1), one Sb(1), and one As(1) atom.