Mn2Zn3O7 crystallizes in the orthorhombic Cmc2_1 space group. Mn(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 40-42°. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 4-coordinate geometry to two equivalent O(3) and two equivalent O(4) atoms. In the second Zn site, Zn(2) is bonded in a 6-coordinate geometry to one O(3), two equivalent O(2), and three equivalent O(1) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Mn(1) and three equivalent Zn(2) atoms to form OMnZn3 tetrahedra that share  a cornercorner with one O(4)Mn2Zn2 tetrahedra and corners with six equivalent O(1)MnZn3 tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Mn(1) and two equivalent Zn(2) atoms. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Mn(1), one Zn(1), and one Zn(2) atom. In the fourth O site, O(4) is bonded to two equivalent Mn(1) and two equivalent Zn(1) atoms to form distorted OMn2Zn2 tetrahedra that share corners with two equivalent O(4)Mn2Zn2 tetrahedra and corners with two equivalent O(1)MnZn3 tetrahedra.
Mn2Zn3O7 crystallizes in the orthorhombic Cmc2_1 space group. Mn(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 40-42°. The Mn(1)-O(1) bond length is 1.93 Å. The Mn(1)-O(4) bond length is 1.96 Å. There is one shorter (1.94 Å) and one longer (1.96 Å) Mn(1)-O(2) bond length. There is one shorter (1.95 Å) and one longer (1.96 Å) Mn(1)-O(3) bond length. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 4-coordinate geometry to two equivalent O(3) and two equivalent O(4) atoms. Both Zn(1)-O(3) bond lengths are 2.05 Å. There is one shorter (2.06 Å) and one longer (2.12 Å) Zn(1)-O(4) bond length. In the second Zn site, Zn(2) is bonded in a 6-coordinate geometry to one O(3), two equivalent O(2), and three equivalent O(1) atoms. The Zn(2)-O(3) bond length is 2.41 Å. There is one shorter (2.02 Å) and one longer (2.56 Å) Zn(2)-O(2) bond length. There are a spread of Zn(2)-O(1) bond distances ranging from 2.01-2.07 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Mn(1) and three equivalent Zn(2) atoms to form OMnZn3 tetrahedra that share  a cornercorner with one O(4)Mn2Zn2 tetrahedra and corners with six equivalent O(1)MnZn3 tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Mn(1) and two equivalent Zn(2) atoms. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Mn(1), one Zn(1), and one Zn(2) atom. In the fourth O site, O(4) is bonded to two equivalent Mn(1) and two equivalent Zn(1) atoms to form distorted OMn2Zn2 tetrahedra that share corners with two equivalent O(4)Mn2Zn2 tetrahedra and corners with two equivalent O(1)MnZn3 tetrahedra.