Pb2(SO4)O crystallizes in the monoclinic C2/m space group. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 5-coordinate geometry to one O(2), two equivalent O(1), and two equivalent O(3) atoms. In the second Pb site, Pb(2) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(1), and two equivalent O(3) atoms. S(1) is bonded in a tetrahedral geometry to one O(2), one O(4), and two equivalent O(3) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Pb(1) and two equivalent Pb(2) atoms to form edge-sharing OPb4 tetrahedra. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Pb(1) and one S(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Pb(1), one Pb(2), and one S(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Pb(2) and one S(1) atom.
Pb2(SO4)O crystallizes in the monoclinic C2/m space group. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 5-coordinate geometry to one O(2), two equivalent O(1), and two equivalent O(3) atoms. The Pb(1)-O(2) bond length is 2.55 Å. Both Pb(1)-O(1) bond lengths are 2.29 Å. Both Pb(1)-O(3) bond lengths are 2.81 Å. In the second Pb site, Pb(2) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(1), and two equivalent O(3) atoms. The Pb(2)-O(4) bond length is 2.57 Å. Both Pb(2)-O(1) bond lengths are 2.33 Å. Both Pb(2)-O(3) bond lengths are 2.78 Å. S(1) is bonded in a tetrahedral geometry to one O(2), one O(4), and two equivalent O(3) atoms. The S(1)-O(2) bond length is 1.48 Å. The S(1)-O(4) bond length is 1.48 Å. Both S(1)-O(3) bond lengths are 1.48 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Pb(1) and two equivalent Pb(2) atoms to form edge-sharing OPb4 tetrahedra. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Pb(1) and one S(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Pb(1), one Pb(2), and one S(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Pb(2) and one S(1) atom.