La2O2SO4 crystallizes in the monoclinic C2/c space group. La(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(3), and four equivalent O(2) atoms. S(1) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to two equivalent La(1) and one S(1) atom. In the second O site, O(2) is bonded to four equivalent La(1) atoms to form a mixture of corner and edge-sharing OLa4 tetrahedra. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent La(1) and one S(1) atom.
La2O2SO4 crystallizes in the monoclinic C2/c space group. La(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(3), and four equivalent O(2) atoms. There is one shorter (2.82 Å) and one longer (2.84 Å) La(1)-O(1) bond length. Both La(1)-O(3) bond lengths are 2.67 Å. There are a spread of La(1)-O(2) bond distances ranging from 2.38-2.43 Å. S(1) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(3) atoms. Both S(1)-O(1) bond lengths are 1.47 Å. Both S(1)-O(3) bond lengths are 1.48 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to two equivalent La(1) and one S(1) atom. In the second O site, O(2) is bonded to four equivalent La(1) atoms to form a mixture of corner and edge-sharing OLa4 tetrahedra. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent La(1) and one S(1) atom.