Lu3O2F5 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Lu sites. In the first Lu site, Lu(1) is bonded in a 7-coordinate geometry to two equivalent O(1), two equivalent F(2), and three equivalent F(1) atoms. In the second Lu site, Lu(2) is bonded in a 8-coordinate geometry to four equivalent O(1), two equivalent F(2), and two equivalent F(3) atoms. O(1) is bonded to two equivalent Lu(1) and two equivalent Lu(2) atoms to form a mixture of edge and corner-sharing OLu4 tetrahedra. There are three inequivalent F sites. In the first F site, F(1) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Lu(1) atoms. In the second F site, F(2) is bonded in a distorted trigonal planar geometry to one Lu(2) and two equivalent Lu(1) atoms. In the third F site, F(3) is bonded in a 2-coordinate geometry to two equivalent Lu(2) atoms.
Lu3O2F5 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Lu sites. In the first Lu site, Lu(1) is bonded in a 7-coordinate geometry to two equivalent O(1), two equivalent F(2), and three equivalent F(1) atoms. There is one shorter (2.14 Å) and one longer (2.15 Å) Lu(1)-O(1) bond length. There is one shorter (2.14 Å) and one longer (2.20 Å) Lu(1)-F(2) bond length. There are a spread of Lu(1)-F(1) bond distances ranging from 2.21-2.30 Å. In the second Lu site, Lu(2) is bonded in a 8-coordinate geometry to four equivalent O(1), two equivalent F(2), and two equivalent F(3) atoms. There are two shorter (2.19 Å) and two longer (2.26 Å) Lu(2)-O(1) bond lengths. Both Lu(2)-F(2) bond lengths are 2.44 Å. There is one shorter (2.19 Å) and one longer (2.25 Å) Lu(2)-F(3) bond length. O(1) is bonded to two equivalent Lu(1) and two equivalent Lu(2) atoms to form a mixture of edge and corner-sharing OLu4 tetrahedra. There are three inequivalent F sites. In the first F site, F(1) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Lu(1) atoms. In the second F site, F(2) is bonded in a distorted trigonal planar geometry to one Lu(2) and two equivalent Lu(1) atoms. In the third F site, F(3) is bonded in a 2-coordinate geometry to two equivalent Lu(2) atoms.