Li2Mn2F7 crystallizes in the monoclinic C2/c space group. Li(1) is bonded to one F(1), one F(2), one F(3), and one F(4) atom to form corner-sharing LiF4 tetrahedra. Mn(1) is bonded in a 7-coordinate geometry to one F(4), two equivalent F(1), two equivalent F(2), and two equivalent F(3) atoms. There are four inequivalent F sites. In the first F site, F(1) is bonded in a distorted trigonal non-coplanar geometry to one Li(1) and two equivalent Mn(1) atoms. In the second F site, F(2) is bonded in a distorted trigonal non-coplanar geometry to one Li(1) and two equivalent Mn(1) atoms. In the third F site, F(3) is bonded in a 2-coordinate geometry to one Li(1) and two equivalent Mn(1) atoms. In the fourth F site, F(4) is bonded in a 4-coordinate geometry to two equivalent Li(1) and two equivalent Mn(1) atoms.
Li2Mn2F7 crystallizes in the monoclinic C2/c space group. Li(1) is bonded to one F(1), one F(2), one F(3), and one F(4) atom to form corner-sharing LiF4 tetrahedra. The Li(1)-F(1) bond length is 2.03 Å. The Li(1)-F(2) bond length is 1.86 Å. The Li(1)-F(3) bond length is 1.84 Å. The Li(1)-F(4) bond length is 1.92 Å. Mn(1) is bonded in a 7-coordinate geometry to one F(4), two equivalent F(1), two equivalent F(2), and two equivalent F(3) atoms. The Mn(1)-F(4) bond length is 2.42 Å. There is one shorter (2.01 Å) and one longer (2.14 Å) Mn(1)-F(1) bond length. There is one shorter (2.05 Å) and one longer (2.17 Å) Mn(1)-F(2) bond length. There is one shorter (1.93 Å) and one longer (2.51 Å) Mn(1)-F(3) bond length. There are four inequivalent F sites. In the first F site, F(1) is bonded in a distorted trigonal non-coplanar geometry to one Li(1) and two equivalent Mn(1) atoms. In the second F site, F(2) is bonded in a distorted trigonal non-coplanar geometry to one Li(1) and two equivalent Mn(1) atoms. In the third F site, F(3) is bonded in a 2-coordinate geometry to one Li(1) and two equivalent Mn(1) atoms. In the fourth F site, F(4) is bonded in a 4-coordinate geometry to two equivalent Li(1) and two equivalent Mn(1) atoms.