YSb(PbO3)2 crystallizes in the monoclinic C2/m space group. Y(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form YO6 octahedra that share corners with six equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 21-25°. Pb(1) is bonded in a 5-coordinate geometry to one O(2) and four equivalent O(1) atoms. Sb(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form SbO6 octahedra that share corners with six equivalent Y(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 21-25°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Y(1), two equivalent Pb(1), and one Sb(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Y(1), one Pb(1), and one Sb(1) atom.
YSb(PbO3)2 crystallizes in the monoclinic C2/m space group. Y(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form YO6 octahedra that share corners with six equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 21-25°. Both Y(1)-O(2) bond lengths are 2.25 Å. All Y(1)-O(1) bond lengths are 2.27 Å. Pb(1) is bonded in a 5-coordinate geometry to one O(2) and four equivalent O(1) atoms. The Pb(1)-O(2) bond length is 2.67 Å. There are two shorter (2.61 Å) and two longer (2.68 Å) Pb(1)-O(1) bond lengths. Sb(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form SbO6 octahedra that share corners with six equivalent Y(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 21-25°. Both Sb(1)-O(2) bond lengths are 2.01 Å. All Sb(1)-O(1) bond lengths are 2.02 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Y(1), two equivalent Pb(1), and one Sb(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Y(1), one Pb(1), and one Sb(1) atom.