Gd5(RuO7)2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded to one O(4), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted GdO7 pentagonal bipyramids that share  a cornercorner with one Ru(1)O6 octahedra,  a cornercorner with one Ru(2)O6 octahedra, corners with three equivalent Gd(1)O7 pentagonal bipyramids,  an edgeedge with one Ru(1)O6 octahedra,  an edgeedge with one Ru(2)O6 octahedra, and edges with two equivalent Gd(1)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 30-37°. In the second Gd site, Gd(2) is bonded in a distorted square co-planar geometry to four equivalent O(1) and four equivalent O(2) atoms. There are two inequivalent Ru sites. In the first Ru site, Ru(1) is bonded to two equivalent O(4) and four equivalent O(2) atoms to form RuO6 octahedra that share corners with two equivalent Ru(2)O6 octahedra, corners with four equivalent Gd(1)O7 pentagonal bipyramids, and edges with four equivalent Gd(1)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 39°. In the second Ru site, Ru(2) is bonded to two equivalent O(4) and four equivalent O(3) atoms to form RuO6 octahedra that share corners with two equivalent Ru(1)O6 octahedra, corners with four equivalent Gd(1)O7 pentagonal bipyramids, and edges with four equivalent Gd(1)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 39°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Gd(2) and two equivalent Gd(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Gd(2), two equivalent Gd(1), and one Ru(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Gd(1) and one Ru(2) atom. In the fourth O site, O(4) is bonded to two equivalent Gd(1), one Ru(1), and one Ru(2) atom to form distorted corner-sharing OGd2Ru2 trigonal pyramids.
Gd5(RuO7)2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded to one O(4), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted GdO7 pentagonal bipyramids that share  a cornercorner with one Ru(1)O6 octahedra,  a cornercorner with one Ru(2)O6 octahedra, corners with three equivalent Gd(1)O7 pentagonal bipyramids,  an edgeedge with one Ru(1)O6 octahedra,  an edgeedge with one Ru(2)O6 octahedra, and edges with two equivalent Gd(1)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 30-37°. The Gd(1)-O(4) bond length is 2.51 Å. There is one shorter (2.21 Å) and one longer (2.22 Å) Gd(1)-O(1) bond length. There is one shorter (2.41 Å) and one longer (2.45 Å) Gd(1)-O(2) bond length. There is one shorter (2.32 Å) and one longer (2.43 Å) Gd(1)-O(3) bond length. In the second Gd site, Gd(2) is bonded in a distorted square co-planar geometry to four equivalent O(1) and four equivalent O(2) atoms. All Gd(2)-O(1) bond lengths are 2.25 Å. All Gd(2)-O(2) bond lengths are 2.82 Å. There are two inequivalent Ru sites. In the first Ru site, Ru(1) is bonded to two equivalent O(4) and four equivalent O(2) atoms to form RuO6 octahedra that share corners with two equivalent Ru(2)O6 octahedra, corners with four equivalent Gd(1)O7 pentagonal bipyramids, and edges with four equivalent Gd(1)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 39°. Both Ru(1)-O(4) bond lengths are 2.02 Å. All Ru(1)-O(2) bond lengths are 1.91 Å. In the second Ru site, Ru(2) is bonded to two equivalent O(4) and four equivalent O(3) atoms to form RuO6 octahedra that share corners with two equivalent Ru(1)O6 octahedra, corners with four equivalent Gd(1)O7 pentagonal bipyramids, and edges with four equivalent Gd(1)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 39°. Both Ru(2)-O(4) bond lengths are 2.00 Å. All Ru(2)-O(3) bond lengths are 1.90 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Gd(2) and two equivalent Gd(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Gd(2), two equivalent Gd(1), and one Ru(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Gd(1) and one Ru(2) atom. In the fourth O site, O(4) is bonded to two equivalent Gd(1), one Ru(1), and one Ru(2) atom to form distorted corner-sharing OGd2Ru2 trigonal pyramids.