MgZn2(CoO3)2 crystallizes in the triclinic P-1 space group. Mg(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form MgO6 octahedra that share corners with six equivalent Co(1)O6 octahedra and faces with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-44°. Co(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted CoO6 octahedra that share corners with three equivalent Mg(1)O6 octahedra, edges with three equivalent Co(1)O6 octahedra, and  a faceface with one Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-44°. Zn(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), two equivalent Co(1), and one Zn(1) atom to form a mixture of distorted corner and edge-sharing OMgZnCo2 tetrahedra. In the second O site, O(2) is bonded to one Mg(1), two equivalent Co(1), and one Zn(1) atom to form a mixture of corner and edge-sharing OMgZnCo2 tetrahedra. In the third O site, O(3) is bonded to one Mg(1), two equivalent Co(1), and one Zn(1) atom to form a mixture of distorted corner and edge-sharing OMgZnCo2 tetrahedra.
MgZn2(CoO3)2 crystallizes in the triclinic P-1 space group. Mg(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form MgO6 octahedra that share corners with six equivalent Co(1)O6 octahedra and faces with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-44°. Both Mg(1)-O(1) bond lengths are 2.07 Å. Both Mg(1)-O(2) bond lengths are 2.07 Å. Both Mg(1)-O(3) bond lengths are 2.10 Å. Co(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted CoO6 octahedra that share corners with three equivalent Mg(1)O6 octahedra, edges with three equivalent Co(1)O6 octahedra, and  a faceface with one Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-44°. There is one shorter (1.88 Å) and one longer (2.25 Å) Co(1)-O(1) bond length. There is one shorter (2.02 Å) and one longer (2.03 Å) Co(1)-O(2) bond length. There is one shorter (1.99 Å) and one longer (2.14 Å) Co(1)-O(3) bond length. Zn(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. The Zn(1)-O(1) bond length is 1.95 Å. The Zn(1)-O(2) bond length is 1.95 Å. The Zn(1)-O(3) bond length is 1.93 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), two equivalent Co(1), and one Zn(1) atom to form a mixture of distorted corner and edge-sharing OMgZnCo2 tetrahedra. In the second O site, O(2) is bonded to one Mg(1), two equivalent Co(1), and one Zn(1) atom to form a mixture of corner and edge-sharing OMgZnCo2 tetrahedra. In the third O site, O(3) is bonded to one Mg(1), two equivalent Co(1), and one Zn(1) atom to form a mixture of distorted corner and edge-sharing OMgZnCo2 tetrahedra.