Tb2CoPtO6 crystallizes in the monoclinic P2_1/c space group. Tb(1) is bonded in a 8-coordinate geometry to two equivalent O(1), three equivalent O(2), and three equivalent O(3) atoms. Co(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CoO6 octahedra that share corners with six equivalent Pt(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-41°. Pt(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form PtO6 octahedra that share corners with six equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-41°. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Tb(1), one Co(1), and one Pt(1) atom to form distorted corner-sharing OTb2CoPt trigonal pyramids. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent Tb(1), one Co(1), and one Pt(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to three equivalent Tb(1), one Co(1), and one Pt(1) atom.
Tb2CoPtO6 crystallizes in the monoclinic P2_1/c space group. Tb(1) is bonded in a 8-coordinate geometry to two equivalent O(1), three equivalent O(2), and three equivalent O(3) atoms. There is one shorter (2.26 Å) and one longer (2.32 Å) Tb(1)-O(1) bond length. There are a spread of Tb(1)-O(2) bond distances ranging from 2.30-2.79 Å. There are a spread of Tb(1)-O(3) bond distances ranging from 2.30-2.70 Å. Co(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CoO6 octahedra that share corners with six equivalent Pt(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-41°. Both Co(1)-O(1) bond lengths are 2.07 Å. Both Co(1)-O(2) bond lengths are 2.10 Å. Both Co(1)-O(3) bond lengths are 2.09 Å. Pt(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form PtO6 octahedra that share corners with six equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-41°. Both Pt(1)-O(1) bond lengths are 2.05 Å. Both Pt(1)-O(2) bond lengths are 2.06 Å. Both Pt(1)-O(3) bond lengths are 2.06 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Tb(1), one Co(1), and one Pt(1) atom to form distorted corner-sharing OTb2CoPt trigonal pyramids. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent Tb(1), one Co(1), and one Pt(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to three equivalent Tb(1), one Co(1), and one Pt(1) atom.