Nb2MnZn2O8 crystallizes in the monoclinic C2/c space group. Nb(1) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form distorted NbO6 octahedra that share corners with four equivalent Mn(1)O6 octahedra and edges with two equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. Mn(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form MnO6 octahedra that share corners with eight equivalent Nb(1)O6 octahedra and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. Zn(1) is bonded in a 4-coordinate geometry to one O(3) and three equivalent O(4) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent Nb(1) and one Mn(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Nb(1) and two equivalent Mn(1) atoms. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Nb(1) and one Zn(1) atom. In the fourth O site, O(4) is bonded to one Nb(1) and three equivalent Zn(1) atoms to form a mixture of corner and edge-sharing ONbZn3 trigonal pyramids.
Nb2MnZn2O8 crystallizes in the monoclinic C2/c space group. Nb(1) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form distorted NbO6 octahedra that share corners with four equivalent Mn(1)O6 octahedra and edges with two equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. The Nb(1)-O(2) bond length is 1.85 Å. The Nb(1)-O(4) bond length is 2.04 Å. There is one shorter (2.00 Å) and one longer (2.05 Å) Nb(1)-O(1) bond length. There is one shorter (2.04 Å) and one longer (2.30 Å) Nb(1)-O(3) bond length. Mn(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form MnO6 octahedra that share corners with eight equivalent Nb(1)O6 octahedra and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. Both Mn(1)-O(1) bond lengths are 2.20 Å. There are two shorter (2.18 Å) and two longer (2.25 Å) Mn(1)-O(2) bond lengths. Zn(1) is bonded in a 4-coordinate geometry to one O(3) and three equivalent O(4) atoms. The Zn(1)-O(3) bond length is 1.99 Å. There are a spread of Zn(1)-O(4) bond distances ranging from 1.99-2.14 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent Nb(1) and one Mn(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Nb(1) and two equivalent Mn(1) atoms. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Nb(1) and one Zn(1) atom. In the fourth O site, O(4) is bonded to one Nb(1) and three equivalent Zn(1) atoms to form a mixture of corner and edge-sharing ONbZn3 trigonal pyramids.