Mn6OF11 is Hydrophilite-derived structured and crystallizes in the monoclinic C2 space group. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one F(1), one F(3), one F(4), one F(5), and one F(6) atom to form MnOF5 octahedra that share corners with three equivalent Mn(4)OF5 octahedra, corners with five equivalent Mn(2)F6 octahedra,  an edgeedge with one Mn(3)F6 octahedra, and  an edgeedge with one Mn(1)OF5 octahedra. The corner-sharing octahedral tilt angles range from 45-55°. In the second Mn site, Mn(2) is bonded to one F(1), one F(2), one F(4), one F(5), and two equivalent F(3) atoms to form MnF6 octahedra that share corners with three equivalent Mn(3)F6 octahedra, corners with five equivalent Mn(1)OF5 octahedra,  an edgeedge with one Mn(2)F6 octahedra, and  an edgeedge with one Mn(4)OF5 octahedra. The corner-sharing octahedral tilt angles range from 48-55°. In the third Mn site, Mn(3) is bonded to two equivalent F(1), two equivalent F(2), and two equivalent F(5) atoms to form MnF6 octahedra that share corners with two equivalent Mn(4)OF5 octahedra, corners with six equivalent Mn(2)F6 octahedra, and edges with two equivalent Mn(1)OF5 octahedra. The corner-sharing octahedral tilt angles range from 49-55°. In the fourth Mn site, Mn(4) is bonded to one O(1), one F(6), two equivalent F(2), and two equivalent F(4) atoms to form MnOF5 octahedra that share corners with two equivalent Mn(3)F6 octahedra, corners with six equivalent Mn(1)OF5 octahedra, and edges with two equivalent Mn(2)F6 octahedra. The corner-sharing octahedral tilt angles range from 45-50°. O(1) is bonded in a trigonal planar geometry to one Mn(4) and two equivalent Mn(1) atoms. There are six inequivalent F sites. In the first F site, F(1) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(3) atom. In the second F site, F(2) is bonded in a trigonal planar geometry to one Mn(2), one Mn(3), and one Mn(4) atom. In the third F site, F(3) is bonded in a trigonal planar geometry to one Mn(1) and two equivalent Mn(2) atoms. In the fourth F site, F(4) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(4) atom. In the fifth F site, F(5) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(3) atom. In the sixth F site, F(6) is bonded in a distorted T-shaped geometry to one Mn(4) and two equivalent Mn(1) atoms.
Mn6OF11 is Hydrophilite-derived structured and crystallizes in the monoclinic C2 space group. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one F(1), one F(3), one F(4), one F(5), and one F(6) atom to form MnOF5 octahedra that share corners with three equivalent Mn(4)OF5 octahedra, corners with five equivalent Mn(2)F6 octahedra,  an edgeedge with one Mn(3)F6 octahedra, and  an edgeedge with one Mn(1)OF5 octahedra. The corner-sharing octahedral tilt angles range from 45-55°. The Mn(1)-O(1) bond length is 2.04 Å. The Mn(1)-F(1) bond length is 2.16 Å. The Mn(1)-F(3) bond length is 2.15 Å. The Mn(1)-F(4) bond length is 2.16 Å. The Mn(1)-F(5) bond length is 2.18 Å. The Mn(1)-F(6) bond length is 2.22 Å. In the second Mn site, Mn(2) is bonded to one F(1), one F(2), one F(4), one F(5), and two equivalent F(3) atoms to form MnF6 octahedra that share corners with three equivalent Mn(3)F6 octahedra, corners with five equivalent Mn(1)OF5 octahedra,  an edgeedge with one Mn(2)F6 octahedra, and  an edgeedge with one Mn(4)OF5 octahedra. The corner-sharing octahedral tilt angles range from 48-55°. The Mn(2)-F(1) bond length is 2.11 Å. The Mn(2)-F(2) bond length is 2.17 Å. The Mn(2)-F(4) bond length is 2.17 Å. The Mn(2)-F(5) bond length is 2.11 Å. Both Mn(2)-F(3) bond lengths are 2.16 Å. In the third Mn site, Mn(3) is bonded to two equivalent F(1), two equivalent F(2), and two equivalent F(5) atoms to form MnF6 octahedra that share corners with two equivalent Mn(4)OF5 octahedra, corners with six equivalent Mn(2)F6 octahedra, and edges with two equivalent Mn(1)OF5 octahedra. The corner-sharing octahedral tilt angles range from 49-55°. Both Mn(3)-F(1) bond lengths are 2.17 Å. Both Mn(3)-F(2) bond lengths are 2.15 Å. Both Mn(3)-F(5) bond lengths are 2.14 Å. In the fourth Mn site, Mn(4) is bonded to one O(1), one F(6), two equivalent F(2), and two equivalent F(4) atoms to form MnOF5 octahedra that share corners with two equivalent Mn(3)F6 octahedra, corners with six equivalent Mn(1)OF5 octahedra, and edges with two equivalent Mn(2)F6 octahedra. The corner-sharing octahedral tilt angles range from 45-50°. The Mn(4)-O(1) bond length is 1.89 Å. The Mn(4)-F(6) bond length is 2.12 Å. Both Mn(4)-F(2) bond lengths are 2.14 Å. Both Mn(4)-F(4) bond lengths are 2.12 Å. O(1) is bonded in a trigonal planar geometry to one Mn(4) and two equivalent Mn(1) atoms. There are six inequivalent F sites. In the first F site, F(1) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(3) atom. In the second F site, F(2) is bonded in a trigonal planar geometry to one Mn(2), one Mn(3), and one Mn(4) atom. In the third F site, F(3) is bonded in a trigonal planar geometry to one Mn(1) and two equivalent Mn(2) atoms. In the fourth F site, F(4) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(4) atom. In the fifth F site, F(5) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(3) atom. In the sixth F site, F(6) is bonded in a distorted T-shaped geometry to one Mn(4) and two equivalent Mn(1) atoms.