LaCrOS2 crystallizes in the orthorhombic Pnma space group. La(1) is bonded in a 3-coordinate geometry to two equivalent S(2), four equivalent S(1), and three equivalent O(1) atoms. Cr(1) is bonded to two equivalent S(1), three equivalent S(2), and one O(1) atom to form distorted edge-sharing CrS5O octahedra. There are two inequivalent S sites. In the first S site, S(1) is bonded in a 6-coordinate geometry to four equivalent La(1) and two equivalent Cr(1) atoms. In the second S site, S(2) is bonded to two equivalent La(1) and three equivalent Cr(1) atoms to form distorted SLa2Cr3 trigonal bipyramids that share corners with five equivalent O(1)La3Cr tetrahedra, corners with four equivalent S(2)La2Cr3 trigonal bipyramids, edges with two equivalent O(1)La3Cr tetrahedra, and edges with two equivalent S(2)La2Cr3 trigonal bipyramids. O(1) is bonded to three equivalent La(1) and one Cr(1) atom to form OLa3Cr tetrahedra that share corners with two equivalent O(1)La3Cr tetrahedra, corners with five equivalent S(2)La2Cr3 trigonal bipyramids, edges with two equivalent O(1)La3Cr tetrahedra, and edges with two equivalent S(2)La2Cr3 trigonal bipyramids.
LaCrOS2 crystallizes in the orthorhombic Pnma space group. La(1) is bonded in a 3-coordinate geometry to two equivalent S(2), four equivalent S(1), and three equivalent O(1) atoms. There is one shorter (3.08 Å) and one longer (3.09 Å) La(1)-S(2) bond length. There are two shorter (3.21 Å) and two longer (3.26 Å) La(1)-S(1) bond lengths. There are two shorter (2.33 Å) and one longer (2.48 Å) La(1)-O(1) bond length. Cr(1) is bonded to two equivalent S(1), three equivalent S(2), and one O(1) atom to form distorted edge-sharing CrS5O octahedra. Both Cr(1)-S(1) bond lengths are 2.54 Å. There is one shorter (2.42 Å) and two longer (2.47 Å) Cr(1)-S(2) bond lengths. The Cr(1)-O(1) bond length is 2.00 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded in a 6-coordinate geometry to four equivalent La(1) and two equivalent Cr(1) atoms. In the second S site, S(2) is bonded to two equivalent La(1) and three equivalent Cr(1) atoms to form distorted SLa2Cr3 trigonal bipyramids that share corners with five equivalent O(1)La3Cr tetrahedra, corners with four equivalent S(2)La2Cr3 trigonal bipyramids, edges with two equivalent O(1)La3Cr tetrahedra, and edges with two equivalent S(2)La2Cr3 trigonal bipyramids. O(1) is bonded to three equivalent La(1) and one Cr(1) atom to form OLa3Cr tetrahedra that share corners with two equivalent O(1)La3Cr tetrahedra, corners with five equivalent S(2)La2Cr3 trigonal bipyramids, edges with two equivalent O(1)La3Cr tetrahedra, and edges with two equivalent S(2)La2Cr3 trigonal bipyramids.