YSb(PbO3)2 crystallizes in the monoclinic C2/c space group. Y(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form YO6 octahedra that share corners with six equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 16-24°. Pb(1) is bonded in a 4-coordinate geometry to one O(2), one O(3), and two equivalent O(1) atoms. Sb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SbO6 octahedra that share corners with six equivalent Y(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 16-24°. There are three 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. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Y(1), one Pb(1), and one Sb(1) atom.
YSb(PbO3)2 crystallizes in the monoclinic C2/c space group. Y(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form YO6 octahedra that share corners with six equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 16-24°. Both Y(1)-O(1) bond lengths are 2.27 Å. Both Y(1)-O(2) bond lengths are 2.31 Å. Both Y(1)-O(3) bond lengths are 2.23 Å. Pb(1) is bonded in a 4-coordinate geometry to one O(2), one O(3), and two equivalent O(1) atoms. The Pb(1)-O(2) bond length is 2.49 Å. The Pb(1)-O(3) bond length is 2.53 Å. There is one shorter (2.54 Å) and one longer (2.70 Å) Pb(1)-O(1) bond length. Sb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SbO6 octahedra that share corners with six equivalent Y(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 16-24°. Both Sb(1)-O(1) bond lengths are 2.03 Å. Both Sb(1)-O(2) bond lengths are 2.01 Å. Both Sb(1)-O(3) bond lengths are 2.02 Å. There are three 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. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Y(1), one Pb(1), and one Sb(1) atom.