MgMn2Al2O6 is Chalcostibite-derived structured and crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form distorted MgO4 trigonal pyramids that share corners with two equivalent Al(2)O4 tetrahedra, corners with three equivalent Mn(1)O5 trigonal bipyramids, corners with four equivalent Mn(2)O5 trigonal bipyramids, and corners with two equivalent Al(1)O4 trigonal pyramids. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(6) atom to form distorted MnO5 trigonal bipyramids that share corners with three equivalent Al(2)O4 tetrahedra, corners with two equivalent Mn(2)O5 trigonal bipyramids, corners with three equivalent Mg(1)O4 trigonal pyramids, corners with four equivalent Al(1)O4 trigonal pyramids, and  an edgeedge with one Mn(2)O5 trigonal bipyramid. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(4), one O(5), and one O(6) atom to form distorted MnO5 trigonal bipyramids that share corners with three equivalent Al(2)O4 tetrahedra, corners with two equivalent Mn(1)O5 trigonal bipyramids, corners with three equivalent Al(1)O4 trigonal pyramids, corners with four equivalent Mg(1)O4 trigonal pyramids, and  an edgeedge with one Mn(1)O5 trigonal bipyramid. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(1), one O(2), one O(3), and one O(6) atom to form distorted AlO4 trigonal pyramids that share corners with two equivalent Al(2)O4 tetrahedra, corners with three equivalent Mn(2)O5 trigonal bipyramids, corners with four equivalent Mn(1)O5 trigonal bipyramids, and corners with two equivalent Mg(1)O4 trigonal pyramids. In the second Al site, Al(2) is bonded to one O(1), one O(3), one O(4), and one O(5) atom to form AlO4 tetrahedra that share corners with three equivalent Mn(1)O5 trigonal bipyramids, corners with three equivalent Mn(2)O5 trigonal bipyramids, corners with two equivalent Mg(1)O4 trigonal pyramids, and corners with two equivalent Al(1)O4 trigonal pyramids. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Mn(1), one Mn(2), one Al(1), and one Al(2) atom to form distorted corner-sharing OMn2Al2 tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(1), one Mn(2), and one Al(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mn(1), one Al(1), and one Al(2) atom. In the fourth O site, O(4) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Al(2) atom to form corner-sharing OMgMn2Al tetrahedra. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mg(1), one Mn(2), and one Al(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(1), one Mn(2), and one Al(1) atom.
MgMn2Al2O6 is Chalcostibite-derived structured and crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form distorted MgO4 trigonal pyramids that share corners with two equivalent Al(2)O4 tetrahedra, corners with three equivalent Mn(1)O5 trigonal bipyramids, corners with four equivalent Mn(2)O5 trigonal bipyramids, and corners with two equivalent Al(1)O4 trigonal pyramids. The Mg(1)-O(2) bond length is 2.04 Å. The Mg(1)-O(4) bond length is 2.00 Å. The Mg(1)-O(5) bond length is 1.98 Å. The Mg(1)-O(6) bond length is 2.02 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(6) atom to form distorted MnO5 trigonal bipyramids that share corners with three equivalent Al(2)O4 tetrahedra, corners with two equivalent Mn(2)O5 trigonal bipyramids, corners with three equivalent Mg(1)O4 trigonal pyramids, corners with four equivalent Al(1)O4 trigonal pyramids, and  an edgeedge with one Mn(2)O5 trigonal bipyramid. The Mn(1)-O(1) bond length is 2.16 Å. The Mn(1)-O(2) bond length is 2.34 Å. The Mn(1)-O(3) bond length is 2.16 Å. The Mn(1)-O(4) bond length is 2.22 Å. The Mn(1)-O(6) bond length is 2.14 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(4), one O(5), and one O(6) atom to form distorted MnO5 trigonal bipyramids that share corners with three equivalent Al(2)O4 tetrahedra, corners with two equivalent Mn(1)O5 trigonal bipyramids, corners with three equivalent Al(1)O4 trigonal pyramids, corners with four equivalent Mg(1)O4 trigonal pyramids, and  an edgeedge with one Mn(1)O5 trigonal bipyramid. The Mn(2)-O(1) bond length is 2.37 Å. The Mn(2)-O(2) bond length is 2.12 Å. The Mn(2)-O(4) bond length is 2.07 Å. The Mn(2)-O(5) bond length is 2.04 Å. The Mn(2)-O(6) bond length is 2.25 Å. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(1), one O(2), one O(3), and one O(6) atom to form distorted AlO4 trigonal pyramids that share corners with two equivalent Al(2)O4 tetrahedra, corners with three equivalent Mn(2)O5 trigonal bipyramids, corners with four equivalent Mn(1)O5 trigonal bipyramids, and corners with two equivalent Mg(1)O4 trigonal pyramids. The Al(1)-O(1) bond length is 1.84 Å. The Al(1)-O(2) bond length is 1.77 Å. The Al(1)-O(3) bond length is 1.83 Å. The Al(1)-O(6) bond length is 1.80 Å. In the second Al site, Al(2) is bonded to one O(1), one O(3), one O(4), and one O(5) atom to form AlO4 tetrahedra that share corners with three equivalent Mn(1)O5 trigonal bipyramids, corners with three equivalent Mn(2)O5 trigonal bipyramids, corners with two equivalent Mg(1)O4 trigonal pyramids, and corners with two equivalent Al(1)O4 trigonal pyramids. The Al(2)-O(1) bond length is 1.85 Å. The Al(2)-O(3) bond length is 1.83 Å. The Al(2)-O(4) bond length is 1.81 Å. The Al(2)-O(5) bond length is 1.75 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Mn(1), one Mn(2), one Al(1), and one Al(2) atom to form distorted corner-sharing OMn2Al2 tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(1), one Mn(2), and one Al(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mn(1), one Al(1), and one Al(2) atom. In the fourth O site, O(4) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Al(2) atom to form corner-sharing OMgMn2Al tetrahedra. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mg(1), one Mn(2), and one Al(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(1), one Mn(2), and one Al(1) atom.