Lu2GeO5 crystallizes in the monoclinic C2/c space group. Lu(1) is bonded in a 6-coordinate geometry to one O(3), two equivalent O(1), and three equivalent O(2) atoms. Ge(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing GeO6 octahedra. The corner-sharing octahedral tilt angles are 51°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Lu(1) and one Ge(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to three equivalent Lu(1) and one Ge(1) atom. In the third O site, O(3) is bonded to two equivalent Lu(1) and two equivalent Ge(1) atoms to form distorted corner-sharing OLu2Ge2 trigonal pyramids.
Lu2GeO5 crystallizes in the monoclinic C2/c space group. Lu(1) is bonded in a 6-coordinate geometry to one O(3), two equivalent O(1), and three equivalent O(2) atoms. The Lu(1)-O(3) bond length is 2.29 Å. There is one shorter (2.13 Å) and one longer (2.15 Å) Lu(1)-O(1) bond length. There are a spread of Lu(1)-O(2) bond distances ranging from 2.17-2.51 Å. Ge(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing GeO6 octahedra. The corner-sharing octahedral tilt angles are 51°. Both Ge(1)-O(1) bond lengths are 1.91 Å. Both Ge(1)-O(2) bond lengths are 1.90 Å. Both Ge(1)-O(3) bond lengths are 2.04 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Lu(1) and one Ge(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to three equivalent Lu(1) and one Ge(1) atom. In the third O site, O(3) is bonded to two equivalent Lu(1) and two equivalent Ge(1) atoms to form distorted corner-sharing OLu2Ge2 trigonal pyramids.