NaMgCo2(MoO5)2 crystallizes in the triclinic P1 space group. Na(1) is bonded in a 7-coordinate geometry to one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. Mg(1) is bonded to one O(1), one O(2), one O(5), one O(6), and one O(7) atom to form MgO5 trigonal bipyramids that share  a cornercorner with one Co(1)O6 octahedra,  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Mo(1)O4 tetrahedra, corners with two equivalent Mo(2)O4 tetrahedra,  an edgeedge with one Co(1)O6 octahedra, and  an edgeedge with one Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-62°. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(3), one O(4), one O(7), and one O(9) atom to form MoO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, and  a cornercorner with one Mg(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 45-57°. In the second Mo site, Mo(2) is bonded to one O(10), one O(5), one O(6), and one O(8) atom to form MoO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, and corners with two equivalent Mg(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 40-69°. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(10), one O(2), one O(3), one O(5), and one O(9) atom to form distorted CoO6 octahedra that share corners with two equivalent Mo(1)O4 tetrahedra, corners with two equivalent Mo(2)O4 tetrahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid, edges with two equivalent Co(2)O6 octahedra, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. In the second Co site, Co(2) is bonded to one O(1), one O(10), one O(2), one O(4), one O(6), and one O(9) atom to form CoO6 octahedra that share corners with two equivalent Mo(1)O4 tetrahedra, corners with two equivalent Mo(2)O4 tetrahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid, edges with two equivalent Co(1)O6 octahedra, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to one Mg(1), one Co(1), and one Co(2) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Mg(1), one Co(1), and one Co(2) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Na(1), one Mo(1), and one Co(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Na(1), one Mo(1), and one Co(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal pyramidal geometry to one Na(1), one Mg(1), one Mo(2), and one Co(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Na(1), one Mg(1), one Mo(2), and one Co(2) atom. In the seventh O site, O(7) is bonded in a distorted linear geometry to one Na(1), one Mg(1), and one Mo(1) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Na(1) and one Mo(2) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Na(1), one Mo(1), one Co(1), and one Co(2) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Mo(2), one Co(1), and one Co(2) atom.
NaMgCo2(MoO5)2 crystallizes in the triclinic P1 space group. Na(1) is bonded in a 7-coordinate geometry to one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. The Na(1)-O(3) bond length is 2.34 Å. The Na(1)-O(4) bond length is 2.34 Å. The Na(1)-O(5) bond length is 2.60 Å. The Na(1)-O(6) bond length is 2.81 Å. The Na(1)-O(7) bond length is 2.89 Å. The Na(1)-O(8) bond length is 2.40 Å. The Na(1)-O(9) bond length is 3.00 Å. Mg(1) is bonded to one O(1), one O(2), one O(5), one O(6), and one O(7) atom to form MgO5 trigonal bipyramids that share  a cornercorner with one Co(1)O6 octahedra,  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Mo(1)O4 tetrahedra, corners with two equivalent Mo(2)O4 tetrahedra,  an edgeedge with one Co(1)O6 octahedra, and  an edgeedge with one Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-62°. The Mg(1)-O(1) bond length is 2.04 Å. The Mg(1)-O(2) bond length is 1.94 Å. The Mg(1)-O(5) bond length is 2.05 Å. The Mg(1)-O(6) bond length is 2.04 Å. The Mg(1)-O(7) bond length is 2.23 Å. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(3), one O(4), one O(7), and one O(9) atom to form MoO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, and  a cornercorner with one Mg(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 45-57°. The Mo(1)-O(3) bond length is 1.80 Å. The Mo(1)-O(4) bond length is 1.79 Å. The Mo(1)-O(7) bond length is 1.78 Å. The Mo(1)-O(9) bond length is 1.84 Å. In the second Mo site, Mo(2) is bonded to one O(10), one O(5), one O(6), and one O(8) atom to form MoO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, and corners with two equivalent Mg(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 40-69°. The Mo(2)-O(10) bond length is 1.80 Å. The Mo(2)-O(5) bond length is 1.82 Å. The Mo(2)-O(6) bond length is 1.84 Å. The Mo(2)-O(8) bond length is 1.74 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(10), one O(2), one O(3), one O(5), and one O(9) atom to form distorted CoO6 octahedra that share corners with two equivalent Mo(1)O4 tetrahedra, corners with two equivalent Mo(2)O4 tetrahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid, edges with two equivalent Co(2)O6 octahedra, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. The Co(1)-O(1) bond length is 1.79 Å. The Co(1)-O(10) bond length is 2.43 Å. The Co(1)-O(2) bond length is 1.82 Å. The Co(1)-O(3) bond length is 2.09 Å. The Co(1)-O(5) bond length is 2.49 Å. The Co(1)-O(9) bond length is 2.16 Å. In the second Co site, Co(2) is bonded to one O(1), one O(10), one O(2), one O(4), one O(6), and one O(9) atom to form CoO6 octahedra that share corners with two equivalent Mo(1)O4 tetrahedra, corners with two equivalent Mo(2)O4 tetrahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid, edges with two equivalent Co(1)O6 octahedra, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. The Co(2)-O(1) bond length is 2.00 Å. The Co(2)-O(10) bond length is 2.30 Å. The Co(2)-O(2) bond length is 2.00 Å. The Co(2)-O(4) bond length is 2.11 Å. The Co(2)-O(6) bond length is 2.27 Å. The Co(2)-O(9) bond length is 2.26 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to one Mg(1), one Co(1), and one Co(2) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Mg(1), one Co(1), and one Co(2) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Na(1), one Mo(1), and one Co(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Na(1), one Mo(1), and one Co(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal pyramidal geometry to one Na(1), one Mg(1), one Mo(2), and one Co(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Na(1), one Mg(1), one Mo(2), and one Co(2) atom. In the seventh O site, O(7) is bonded in a distorted linear geometry to one Na(1), one Mg(1), and one Mo(1) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Na(1) and one Mo(2) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Na(1), one Mo(1), one Co(1), and one Co(2) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Mo(2), one Co(1), and one Co(2) atom.