BaGd2PtO5 crystallizes in the tetragonal P4/mbm space group. Ba(1) is bonded in a distorted q6 geometry to two equivalent O(1) and eight equivalent O(2) atoms. Gd(1) is bonded in a 8-coordinate geometry to two equivalent O(1) and six equivalent O(2) atoms. Pt(1) 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 two equivalent Ba(1) and four equivalent Gd(1) atoms to form OBa2Gd4 octahedra that share corners with six equivalent O(1)Ba2Gd4 octahedra, corners with sixteen equivalent O(2)Ba2Gd3Pt octahedra, and faces with eight equivalent O(2)Ba2Gd3Pt octahedra. The corner-sharing octahedral tilt angles range from 0-59°. In the second O site, O(2) is bonded to two equivalent Ba(1), three equivalent Gd(1), and one Pt(1) atom to form distorted OBa2Gd3Pt octahedra that share corners with four equivalent O(1)Ba2Gd4 octahedra, corners with thirteen equivalent O(2)Ba2Gd3Pt octahedra, edges with five equivalent O(2)Ba2Gd3Pt octahedra, faces with two equivalent O(1)Ba2Gd4 octahedra, and faces with three equivalent O(2)Ba2Gd3Pt octahedra. The corner-sharing octahedral tilt angles range from 0-75°.
BaGd2PtO5 crystallizes in the tetragonal P4/mbm space group. Ba(1) is bonded in a distorted q6 geometry to two equivalent O(1) and eight equivalent O(2) atoms. Both Ba(1)-O(1) bond lengths are 2.98 Å. All Ba(1)-O(2) bond lengths are 3.01 Å. Gd(1) is bonded in a 8-coordinate geometry to two equivalent O(1) and six equivalent O(2) atoms. Both Gd(1)-O(1) bond lengths are 2.47 Å. There are two shorter (2.26 Å) and four longer (2.57 Å) Gd(1)-O(2) bond lengths. Pt(1) is bonded in a square co-planar geometry to four equivalent O(2) atoms. All Pt(1)-O(2) bond lengths are 2.03 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ba(1) and four equivalent Gd(1) atoms to form OBa2Gd4 octahedra that share corners with six equivalent O(1)Ba2Gd4 octahedra, corners with sixteen equivalent O(2)Ba2Gd3Pt octahedra, and faces with eight equivalent O(2)Ba2Gd3Pt octahedra. The corner-sharing octahedral tilt angles range from 0-59°. In the second O site, O(2) is bonded to two equivalent Ba(1), three equivalent Gd(1), and one Pt(1) atom to form distorted OBa2Gd3Pt octahedra that share corners with four equivalent O(1)Ba2Gd4 octahedra, corners with thirteen equivalent O(2)Ba2Gd3Pt octahedra, edges with five equivalent O(2)Ba2Gd3Pt octahedra, faces with two equivalent O(1)Ba2Gd4 octahedra, and faces with three equivalent O(2)Ba2Gd3Pt octahedra. The corner-sharing octahedral tilt angles range from 0-75°.