NaCoSeO6F crystallizes in the monoclinic P2_1/m space group. Na(1) is bonded to one O(3), two equivalent O(1), two equivalent O(4), and one F(1) atom to form distorted NaO5F pentagonal pyramids that share corners with two equivalent Co(1)O4F2 octahedra, corners with three equivalent Se(1)O4 tetrahedra, and edges with two equivalent Co(1)O4F2 octahedra. The corner-sharing octahedral tilt angles are 54°. Co(1) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent F(1) atoms to form CoO4F2 octahedra that share corners with two equivalent Co(1)O4F2 octahedra, corners with two equivalent Na(1)O5F pentagonal pyramids, corners with two equivalent Se(1)O4 tetrahedra, and edges with two equivalent Na(1)O5F pentagonal pyramids. The corner-sharing octahedral tilt angles are 49°. Se(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form SeO4 tetrahedra that share corners with two equivalent Co(1)O4F2 octahedra and corners with three equivalent Na(1)O5F pentagonal pyramids. The corner-sharing octahedral tilt angles are 58°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Na(1), one Co(1), and one Se(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Se(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Na(1) and one Se(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Na(1) and one Co(1) atom. F(1) is bonded in a trigonal non-coplanar geometry to one Na(1) and two equivalent Co(1) atoms.
NaCoSeO6F crystallizes in the monoclinic P2_1/m space group. Na(1) is bonded to one O(3), two equivalent O(1), two equivalent O(4), and one F(1) atom to form distorted NaO5F pentagonal pyramids that share corners with two equivalent Co(1)O4F2 octahedra, corners with three equivalent Se(1)O4 tetrahedra, and edges with two equivalent Co(1)O4F2 octahedra. The corner-sharing octahedral tilt angles are 54°. The Na(1)-O(3) bond length is 2.31 Å. Both Na(1)-O(1) bond lengths are 2.62 Å. Both Na(1)-O(4) bond lengths are 2.54 Å. The Na(1)-F(1) bond length is 2.39 Å. Co(1) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent F(1) atoms to form CoO4F2 octahedra that share corners with two equivalent Co(1)O4F2 octahedra, corners with two equivalent Na(1)O5F pentagonal pyramids, corners with two equivalent Se(1)O4 tetrahedra, and edges with two equivalent Na(1)O5F pentagonal pyramids. The corner-sharing octahedral tilt angles are 49°. Both Co(1)-O(1) bond lengths are 2.02 Å. Both Co(1)-O(4) bond lengths are 1.65 Å. Both Co(1)-F(1) bond lengths are 2.02 Å. Se(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form SeO4 tetrahedra that share corners with two equivalent Co(1)O4F2 octahedra and corners with three equivalent Na(1)O5F pentagonal pyramids. The corner-sharing octahedral tilt angles are 58°. The Se(1)-O(2) bond length is 1.66 Å. The Se(1)-O(3) bond length is 1.64 Å. Both Se(1)-O(1) bond lengths are 1.74 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Na(1), one Co(1), and one Se(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Se(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Na(1) and one Se(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Na(1) and one Co(1) atom. F(1) is bonded in a trigonal non-coplanar geometry to one Na(1) and two equivalent Co(1) atoms.