Ba2Mn2Sb2O crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to six equivalent Sb(1) atoms to form distorted edge-sharing BaSb6 octahedra. In the second Ba site, Ba(2) is bonded in a trigonal planar geometry to three equivalent O(1) atoms. Mn(1) is bonded in a distorted single-bond geometry to three equivalent Sb(1) and one O(1) atom. Sb(1) is bonded in a 6-coordinate geometry to three equivalent Ba(1) and three equivalent Mn(1) atoms. O(1) is bonded to three equivalent Ba(2) and two equivalent Mn(1) atoms to form corner-sharing OBa3Mn2 trigonal bipyramids.
Ba2Mn2Sb2O crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to six equivalent Sb(1) atoms to form distorted edge-sharing BaSb6 octahedra. All Ba(1)-Sb(1) bond lengths are 3.58 Å. In the second Ba site, Ba(2) is bonded in a trigonal planar geometry to three equivalent O(1) atoms. All Ba(2)-O(1) bond lengths are 2.77 Å. Mn(1) is bonded in a distorted single-bond geometry to three equivalent Sb(1) and one O(1) atom. All Mn(1)-Sb(1) bond lengths are 2.88 Å. The Mn(1)-O(1) bond length is 2.05 Å. Sb(1) is bonded in a 6-coordinate geometry to three equivalent Ba(1) and three equivalent Mn(1) atoms. O(1) is bonded to three equivalent Ba(2) and two equivalent Mn(1) atoms to form corner-sharing OBa3Mn2 trigonal bipyramids.