Gd4PdO7 crystallizes in the triclinic P-1 space group. There are four inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 6-coordinate geometry to one O(1), one O(4), one O(6), one O(7), and two equivalent O(2) atoms. In the second Gd site, Gd(2) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(6), and two equivalent O(3) atoms. In the third Gd site, Gd(3) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(6), and two equivalent O(7) atoms. In the fourth Gd site, Gd(4) is bonded in a 7-coordinate geometry to one O(3), one O(4), one O(5), one O(6), one O(7), and two equivalent O(1) atoms. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a square co-planar geometry to two equivalent O(5) and two equivalent O(6) atoms. In the second Pd site, Pd(2) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(5) atoms. There are seven inequivalent O sites. In the first O site, O(1) is bonded to one Gd(1), one Gd(2), two equivalent Gd(4), and one Pd(2) atom to form distorted OGd4Pd square pyramids that share  a cornercorner with one O(1)Gd4Pd square pyramid, corners with three equivalent O(2)Gd4 tetrahedra, corners with three equivalent O(7)Gd4 tetrahedra,  a cornercorner with one O(5)Gd3Pd2 trigonal bipyramid,  an edgeedge with one O(1)Gd4Pd square pyramid, edges with two equivalent O(4)Gd4 tetrahedra, edges with two equivalent O(5)Gd3Pd2 trigonal bipyramids, and edges with two equivalent O(6)Gd4Pd trigonal bipyramids. In the second O site, O(2) is bonded to one Gd(2), one Gd(3), and two equivalent Gd(1) atoms to form OGd4 tetrahedra that share corners with three equivalent O(1)Gd4Pd square pyramids, corners with two equivalent O(4)Gd4 tetrahedra, corners with two equivalent O(7)Gd4 tetrahedra, corners with two equivalent O(5)Gd3Pd2 trigonal bipyramids, corners with two equivalent O(6)Gd4Pd trigonal bipyramids,  an edgeedge with one O(2)Gd4 tetrahedra,  an edgeedge with one O(4)Gd4 tetrahedra,  an edgeedge with one O(7)Gd4 tetrahedra, and  an edgeedge with one O(6)Gd4Pd trigonal bipyramid. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Gd(3), one Gd(4), and two equivalent Gd(2) atoms. In the fourth O site, O(4) is bonded to one Gd(1), one Gd(2), one Gd(3), and one Gd(4) atom to form OGd4 tetrahedra that share corners with two equivalent O(2)Gd4 tetrahedra, corners with two equivalent O(7)Gd4 tetrahedra, corners with two equivalent O(6)Gd4Pd trigonal bipyramids, corners with three equivalent O(5)Gd3Pd2 trigonal bipyramids, edges with two equivalent O(1)Gd4Pd square pyramids,  an edgeedge with one O(2)Gd4 tetrahedra,  an edgeedge with one O(7)Gd4 tetrahedra, and  an edgeedge with one O(6)Gd4Pd trigonal bipyramid. In the fifth O site, O(5) is bonded to one Gd(2), one Gd(3), one Gd(4), one Pd(1), and one Pd(2) atom to form distorted OGd3Pd2 trigonal bipyramids that share  a cornercorner with one O(1)Gd4Pd square pyramid,  a cornercorner with one O(7)Gd4 tetrahedra, corners with two equivalent O(2)Gd4 tetrahedra, corners with three equivalent O(4)Gd4 tetrahedra,  a cornercorner with one O(6)Gd4Pd trigonal bipyramid, corners with two equivalent O(5)Gd3Pd2 trigonal bipyramids, edges with two equivalent O(1)Gd4Pd square pyramids,  an edgeedge with one O(7)Gd4 tetrahedra, and edges with two equivalent O(6)Gd4Pd trigonal bipyramids. In the sixth O site, O(6) is bonded to one Gd(1), one Gd(2), one Gd(3), one Gd(4), and one Pd(1) atom to form distorted OGd4Pd trigonal bipyramids that share corners with two equivalent O(2)Gd4 tetrahedra, corners with two equivalent O(4)Gd4 tetrahedra, corners with four equivalent O(7)Gd4 tetrahedra,  a cornercorner with one O(5)Gd3Pd2 trigonal bipyramid,  a cornercorner with one O(6)Gd4Pd trigonal bipyramid, edges with two equivalent O(1)Gd4Pd square pyramids,  an edgeedge with one O(2)Gd4 tetrahedra,  an edgeedge with one O(4)Gd4 tetrahedra, and edges with two equivalent O(5)Gd3Pd2 trigonal bipyramids. In the seventh O site, O(7) is bonded to one Gd(1), one Gd(4), and two equivalent Gd(3) atoms to form OGd4 tetrahedra that share corners with three equivalent O(1)Gd4Pd square pyramids, corners with two equivalent O(2)Gd4 tetrahedra, corners with two equivalent O(4)Gd4 tetrahedra,  a cornercorner with one O(5)Gd3Pd2 trigonal bipyramid, corners with four equivalent O(6)Gd4Pd trigonal bipyramids,  an edgeedge with one O(2)Gd4 tetrahedra,  an edgeedge with one O(4)Gd4 tetrahedra,  an edgeedge with one O(7)Gd4 tetrahedra, and  an edgeedge with one O(5)Gd3Pd2 trigonal bipyramid.
Gd4PdO7 crystallizes in the triclinic P-1 space group. There are four inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 6-coordinate geometry to one O(1), one O(4), one O(6), one O(7), and two equivalent O(2) atoms. The Gd(1)-O(1) bond length is 2.55 Å. The Gd(1)-O(4) bond length is 2.30 Å. The Gd(1)-O(6) bond length is 2.39 Å. The Gd(1)-O(7) bond length is 2.30 Å. There is one shorter (2.30 Å) and one longer (2.39 Å) Gd(1)-O(2) bond length. In the second Gd site, Gd(2) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(6), and two equivalent O(3) atoms. The Gd(2)-O(1) bond length is 2.61 Å. The Gd(2)-O(2) bond length is 2.28 Å. The Gd(2)-O(4) bond length is 2.31 Å. The Gd(2)-O(5) bond length is 2.46 Å. The Gd(2)-O(6) bond length is 2.43 Å. There is one shorter (2.26 Å) and one longer (2.87 Å) Gd(2)-O(3) bond length. In the third Gd site, Gd(3) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(6), and two equivalent O(7) atoms. The Gd(3)-O(2) bond length is 2.36 Å. The Gd(3)-O(3) bond length is 2.33 Å. The Gd(3)-O(4) bond length is 2.31 Å. The Gd(3)-O(5) bond length is 2.45 Å. The Gd(3)-O(6) bond length is 2.76 Å. There is one shorter (2.33 Å) and one longer (2.42 Å) Gd(3)-O(7) bond length. In the fourth Gd site, Gd(4) is bonded in a 7-coordinate geometry to one O(3), one O(4), one O(5), one O(6), one O(7), and two equivalent O(1) atoms. The Gd(4)-O(3) bond length is 2.30 Å. The Gd(4)-O(4) bond length is 2.29 Å. The Gd(4)-O(5) bond length is 2.64 Å. The Gd(4)-O(6) bond length is 2.53 Å. The Gd(4)-O(7) bond length is 2.29 Å. There is one shorter (2.42 Å) and one longer (2.45 Å) Gd(4)-O(1) bond length. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a square co-planar geometry to two equivalent O(5) and two equivalent O(6) atoms. Both Pd(1)-O(5) bond lengths are 2.07 Å. Both Pd(1)-O(6) bond lengths are 2.06 Å. In the second Pd site, Pd(2) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(5) atoms. Both Pd(2)-O(1) bond lengths are 2.06 Å. Both Pd(2)-O(5) bond lengths are 2.07 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded to one Gd(1), one Gd(2), two equivalent Gd(4), and one Pd(2) atom to form distorted OGd4Pd square pyramids that share  a cornercorner with one O(1)Gd4Pd square pyramid, corners with three equivalent O(2)Gd4 tetrahedra, corners with three equivalent O(7)Gd4 tetrahedra,  a cornercorner with one O(5)Gd3Pd2 trigonal bipyramid,  an edgeedge with one O(1)Gd4Pd square pyramid, edges with two equivalent O(4)Gd4 tetrahedra, edges with two equivalent O(5)Gd3Pd2 trigonal bipyramids, and edges with two equivalent O(6)Gd4Pd trigonal bipyramids. In the second O site, O(2) is bonded to one Gd(2), one Gd(3), and two equivalent Gd(1) atoms to form OGd4 tetrahedra that share corners with three equivalent O(1)Gd4Pd square pyramids, corners with two equivalent O(4)Gd4 tetrahedra, corners with two equivalent O(7)Gd4 tetrahedra, corners with two equivalent O(5)Gd3Pd2 trigonal bipyramids, corners with two equivalent O(6)Gd4Pd trigonal bipyramids,  an edgeedge with one O(2)Gd4 tetrahedra,  an edgeedge with one O(4)Gd4 tetrahedra,  an edgeedge with one O(7)Gd4 tetrahedra, and  an edgeedge with one O(6)Gd4Pd trigonal bipyramid. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Gd(3), one Gd(4), and two equivalent Gd(2) atoms. In the fourth O site, O(4) is bonded to one Gd(1), one Gd(2), one Gd(3), and one Gd(4) atom to form OGd4 tetrahedra that share corners with two equivalent O(2)Gd4 tetrahedra, corners with two equivalent O(7)Gd4 tetrahedra, corners with two equivalent O(6)Gd4Pd trigonal bipyramids, corners with three equivalent O(5)Gd3Pd2 trigonal bipyramids, edges with two equivalent O(1)Gd4Pd square pyramids,  an edgeedge with one O(2)Gd4 tetrahedra,  an edgeedge with one O(7)Gd4 tetrahedra, and  an edgeedge with one O(6)Gd4Pd trigonal bipyramid. In the fifth O site, O(5) is bonded to one Gd(2), one Gd(3), one Gd(4), one Pd(1), and one Pd(2) atom to form distorted OGd3Pd2 trigonal bipyramids that share  a cornercorner with one O(1)Gd4Pd square pyramid,  a cornercorner with one O(7)Gd4 tetrahedra, corners with two equivalent O(2)Gd4 tetrahedra, corners with three equivalent O(4)Gd4 tetrahedra,  a cornercorner with one O(6)Gd4Pd trigonal bipyramid, corners with two equivalent O(5)Gd3Pd2 trigonal bipyramids, edges with two equivalent O(1)Gd4Pd square pyramids,  an edgeedge with one O(7)Gd4 tetrahedra, and edges with two equivalent O(6)Gd4Pd trigonal bipyramids. In the sixth O site, O(6) is bonded to one Gd(1), one Gd(2), one Gd(3), one Gd(4), and one Pd(1) atom to form distorted OGd4Pd trigonal bipyramids that share corners with two equivalent O(2)Gd4 tetrahedra, corners with two equivalent O(4)Gd4 tetrahedra, corners with four equivalent O(7)Gd4 tetrahedra,  a cornercorner with one O(5)Gd3Pd2 trigonal bipyramid,  a cornercorner with one O(6)Gd4Pd trigonal bipyramid, edges with two equivalent O(1)Gd4Pd square pyramids,  an edgeedge with one O(2)Gd4 tetrahedra,  an edgeedge with one O(4)Gd4 tetrahedra, and edges with two equivalent O(5)Gd3Pd2 trigonal bipyramids. In the seventh O site, O(7) is bonded to one Gd(1), one Gd(4), and two equivalent Gd(3) atoms to form OGd4 tetrahedra that share corners with three equivalent O(1)Gd4Pd square pyramids, corners with two equivalent O(2)Gd4 tetrahedra, corners with two equivalent O(4)Gd4 tetrahedra,  a cornercorner with one O(5)Gd3Pd2 trigonal bipyramid, corners with four equivalent O(6)Gd4Pd trigonal bipyramids,  an edgeedge with one O(2)Gd4 tetrahedra,  an edgeedge with one O(4)Gd4 tetrahedra,  an edgeedge with one O(7)Gd4 tetrahedra, and  an edgeedge with one O(5)Gd3Pd2 trigonal bipyramid.