MnZnAsO5 crystallizes in the orthorhombic P2_12_12_1 space group. Mn(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(5) atoms to form MnO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Zn(1)O4 tetrahedra. Zn(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form distorted ZnO4 tetrahedra that share corners with three equivalent As(1)O4 tetrahedra and edges with two equivalent Mn(1)O6 octahedra. As(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form AsO4 tetrahedra that share corners with four equivalent Mn(1)O6 octahedra and corners with three equivalent Zn(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 43-55°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to two equivalent Mn(1) and one As(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Zn(1) and one As(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mn(1), one Zn(1), and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mn(1), one Zn(1), and one As(1) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to two equivalent Mn(1) and one Zn(1) atom.
MnZnAsO5 crystallizes in the orthorhombic P2_12_12_1 space group. Mn(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(5) atoms to form MnO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Zn(1)O4 tetrahedra. The Mn(1)-O(3) bond length is 2.06 Å. The Mn(1)-O(4) bond length is 2.07 Å. There is one shorter (2.18 Å) and one longer (2.21 Å) Mn(1)-O(1) bond length. Both Mn(1)-O(5) bond lengths are 1.92 Å. Zn(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form distorted ZnO4 tetrahedra that share corners with three equivalent As(1)O4 tetrahedra and edges with two equivalent Mn(1)O6 octahedra. The Zn(1)-O(2) bond length is 1.88 Å. The Zn(1)-O(3) bond length is 2.11 Å. The Zn(1)-O(4) bond length is 2.11 Å. The Zn(1)-O(5) bond length is 1.98 Å. As(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form AsO4 tetrahedra that share corners with four equivalent Mn(1)O6 octahedra and corners with three equivalent Zn(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 43-55°. The As(1)-O(1) bond length is 1.71 Å. The As(1)-O(2) bond length is 1.71 Å. The As(1)-O(3) bond length is 1.74 Å. The As(1)-O(4) bond length is 1.74 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to two equivalent Mn(1) and one As(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Zn(1) and one As(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mn(1), one Zn(1), and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mn(1), one Zn(1), and one As(1) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to two equivalent Mn(1) and one Zn(1) atom.