Mn2InO5 crystallizes in the orthorhombic Cmcm space group. Mn(1) is bonded to one O(3), two equivalent O(1), and three equivalent O(2) atoms to form a mixture of edge and corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 30-41°. In(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Mn(1) and one In(1) atom. In the second O site, O(2) is bonded to three equivalent Mn(1) and one In(1) atom to form distorted OMn3In trigonal pyramids that share  a cornercorner with one O(3)Mn2In2 trigonal pyramid, corners with three equivalent O(2)Mn3In trigonal pyramids, edges with two equivalent O(3)Mn2In2 trigonal pyramids, and edges with two equivalent O(2)Mn3In trigonal pyramids. In the third O site, O(3) is bonded to two equivalent Mn(1) and two equivalent In(1) atoms to form distorted OMn2In2 trigonal pyramids that share corners with two equivalent O(3)Mn2In2 trigonal pyramids, corners with two equivalent O(2)Mn3In trigonal pyramids, and edges with four equivalent O(2)Mn3In trigonal pyramids.
Mn2InO5 crystallizes in the orthorhombic Cmcm space group. Mn(1) is bonded to one O(3), two equivalent O(1), and three equivalent O(2) atoms to form a mixture of edge and corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 30-41°. The Mn(1)-O(3) bond length is 2.11 Å. Both Mn(1)-O(1) bond lengths are 1.93 Å. There are two shorter (2.02 Å) and one longer (2.07 Å) Mn(1)-O(2) bond length. In(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Both In(1)-O(1) bond lengths are 2.08 Å. Both In(1)-O(2) bond lengths are 2.32 Å. Both In(1)-O(3) bond lengths are 2.17 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Mn(1) and one In(1) atom. In the second O site, O(2) is bonded to three equivalent Mn(1) and one In(1) atom to form distorted OMn3In trigonal pyramids that share  a cornercorner with one O(3)Mn2In2 trigonal pyramid, corners with three equivalent O(2)Mn3In trigonal pyramids, edges with two equivalent O(3)Mn2In2 trigonal pyramids, and edges with two equivalent O(2)Mn3In trigonal pyramids. In the third O site, O(3) is bonded to two equivalent Mn(1) and two equivalent In(1) atoms to form distorted OMn2In2 trigonal pyramids that share corners with two equivalent O(3)Mn2In2 trigonal pyramids, corners with two equivalent O(2)Mn3In trigonal pyramids, and edges with four equivalent O(2)Mn3In trigonal pyramids.