MnZnSiO5 crystallizes in the triclinic P1 space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(10), one O(2), one O(4), one O(5), one O(7), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, and corners with two equivalent Si(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 39°. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(3), one O(6), one O(8), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, and corners with two equivalent Si(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 39°. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 5-coordinate geometry to one O(10), one O(3), one O(4), one O(7), and one O(8) atom. In the second Zn site, Zn(2) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(5), one O(6), and one O(9) atom. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(2), one O(7), and one O(8) atom to form SiO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-47°. In the second Si site, Si(2) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form SiO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-48°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mn(2), one Zn(2), and one Si(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mn(1), one Zn(2), and one Si(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mn(2), one Zn(1), and one Si(2) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Mn(1), one Zn(1), and one Si(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Zn(2), and one Si(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mn(2), one Zn(2), and one Si(2) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Mn(1), one Zn(1), and one Si(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Mn(2), one Zn(1), and one Si(1) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Zn(2) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Zn(1) atom.
MnZnSiO5 crystallizes in the triclinic P1 space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(10), one O(2), one O(4), one O(5), one O(7), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, and corners with two equivalent Si(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 39°. The Mn(1)-O(10) bond length is 1.88 Å. The Mn(1)-O(2) bond length is 1.94 Å. The Mn(1)-O(4) bond length is 1.94 Å. The Mn(1)-O(5) bond length is 1.94 Å. The Mn(1)-O(7) bond length is 1.94 Å. The Mn(1)-O(9) bond length is 1.88 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(3), one O(6), one O(8), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, and corners with two equivalent Si(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 39°. The Mn(2)-O(1) bond length is 1.94 Å. The Mn(2)-O(10) bond length is 1.89 Å. The Mn(2)-O(3) bond length is 1.95 Å. The Mn(2)-O(6) bond length is 1.94 Å. The Mn(2)-O(8) bond length is 1.94 Å. The Mn(2)-O(9) bond length is 1.89 Å. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 5-coordinate geometry to one O(10), one O(3), one O(4), one O(7), and one O(8) atom. The Zn(1)-O(10) bond length is 1.92 Å. The Zn(1)-O(3) bond length is 2.20 Å. The Zn(1)-O(4) bond length is 2.41 Å. The Zn(1)-O(7) bond length is 2.03 Å. The Zn(1)-O(8) bond length is 2.03 Å. In the second Zn site, Zn(2) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(5), one O(6), and one O(9) atom. The Zn(2)-O(1) bond length is 2.26 Å. The Zn(2)-O(2) bond length is 2.34 Å. The Zn(2)-O(5) bond length is 2.02 Å. The Zn(2)-O(6) bond length is 2.06 Å. The Zn(2)-O(9) bond length is 1.92 Å. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(2), one O(7), and one O(8) atom to form SiO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-47°. The Si(1)-O(1) bond length is 1.64 Å. The Si(1)-O(2) bond length is 1.64 Å. The Si(1)-O(7) bond length is 1.66 Å. The Si(1)-O(8) bond length is 1.66 Å. In the second Si site, Si(2) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form SiO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-48°. The Si(2)-O(3) bond length is 1.64 Å. The Si(2)-O(4) bond length is 1.64 Å. The Si(2)-O(5) bond length is 1.66 Å. The Si(2)-O(6) bond length is 1.66 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mn(2), one Zn(2), and one Si(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mn(1), one Zn(2), and one Si(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mn(2), one Zn(1), and one Si(2) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Mn(1), one Zn(1), and one Si(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Zn(2), and one Si(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mn(2), one Zn(2), and one Si(2) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Mn(1), one Zn(1), and one Si(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Mn(2), one Zn(1), and one Si(1) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Zn(2) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Zn(1) atom.