Ba8Lu3(Pt2O9)2 is (La,Ba)CuO4-derived structured and crystallizes in the cubic Pm-3m space group. Ba(1) is bonded in a distorted q6 geometry to three equivalent O(1) and six equivalent O(2) atoms. Lu(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form LuO6 octahedra that share corners with two equivalent Pt(1)O6 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded to six equivalent O(1) atoms to form PtO6 octahedra that share corners with six equivalent Lu(1)O6 octahedra. The corner-sharing octahedra are not tilted. In the second Pt site, Pt(2) is bonded in a square co-planar geometry to four equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Ba(1), one Lu(1), and one Pt(1) atom to form a mixture of distorted corner, edge, and face-sharing OBa4LuPt octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the second O site, O(2) is bonded to four equivalent Ba(1), one Lu(1), and one Pt(2) atom to form a mixture of distorted corner, edge, and face-sharing OBa4LuPt octahedra. The corner-sharing octahedral tilt angles range from 0-61°.
Ba8Lu3(Pt2O9)2 is (La,Ba)CuO4-derived structured and crystallizes in the cubic Pm-3m space group. Ba(1) is bonded in a distorted q6 geometry to three equivalent O(1) and six equivalent O(2) atoms. All Ba(1)-O(1) bond lengths are 2.83 Å. All Ba(1)-O(2) bond lengths are 2.98 Å. Lu(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form LuO6 octahedra that share corners with two equivalent Pt(1)O6 octahedra. The corner-sharing octahedra are not tilted. Both Lu(1)-O(1) bond lengths are 2.17 Å. All Lu(1)-O(2) bond lengths are 2.17 Å. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded to six equivalent O(1) atoms to form PtO6 octahedra that share corners with six equivalent Lu(1)O6 octahedra. The corner-sharing octahedra are not tilted. All Pt(1)-O(1) bond lengths are 2.03 Å. In the second Pt site, Pt(2) is bonded in a square co-planar geometry to four equivalent O(2) atoms. All Pt(2)-O(2) bond lengths are 2.02 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Ba(1), one Lu(1), and one Pt(1) atom to form a mixture of distorted corner, edge, and face-sharing OBa4LuPt octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the second O site, O(2) is bonded to four equivalent Ba(1), one Lu(1), and one Pt(2) atom to form a mixture of distorted corner, edge, and face-sharing OBa4LuPt octahedra. The corner-sharing octahedral tilt angles range from 0-61°.