La4NS3Cl3 crystallizes in the hexagonal P6_3mc space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 8-coordinate geometry to one N(1), four equivalent S(1), and three equivalent Cl(1) atoms. In the second La site, La(2) is bonded in a 1-coordinate geometry to one N(1), six equivalent S(1), and three equivalent Cl(1) atoms. N(1) is bonded to one La(2) and three equivalent La(1) atoms to form NLa4 tetrahedra that share corners with six equivalent Cl(1)La4 trigonal pyramids and edges with three equivalent Cl(1)La4 trigonal pyramids. S(1) is bonded in a 6-coordinate geometry to two equivalent La(2) and four equivalent La(1) atoms. Cl(1) is bonded to one La(2) and three equivalent La(1) atoms to form distorted ClLa4 trigonal pyramids that share corners with two equivalent N(1)La4 tetrahedra, corners with eight equivalent Cl(1)La4 trigonal pyramids, and  an edgeedge with one N(1)La4 tetrahedra.
La4NS3Cl3 crystallizes in the hexagonal P6_3mc space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 8-coordinate geometry to one N(1), four equivalent S(1), and three equivalent Cl(1) atoms. The La(1)-N(1) bond length is 2.31 Å. There are two shorter (2.95 Å) and two longer (3.25 Å) La(1)-S(1) bond lengths. There is one shorter (2.98 Å) and two longer (3.00 Å) La(1)-Cl(1) bond lengths. In the second La site, La(2) is bonded in a 1-coordinate geometry to one N(1), six equivalent S(1), and three equivalent Cl(1) atoms. The La(2)-N(1) bond length is 2.42 Å. There are three shorter (2.88 Å) and three longer (3.65 Å) La(2)-S(1) bond lengths. All La(2)-Cl(1) bond lengths are 3.34 Å. N(1) is bonded to one La(2) and three equivalent La(1) atoms to form NLa4 tetrahedra that share corners with six equivalent Cl(1)La4 trigonal pyramids and edges with three equivalent Cl(1)La4 trigonal pyramids. S(1) is bonded in a 6-coordinate geometry to two equivalent La(2) and four equivalent La(1) atoms. Cl(1) is bonded to one La(2) and three equivalent La(1) atoms to form distorted ClLa4 trigonal pyramids that share corners with two equivalent N(1)La4 tetrahedra, corners with eight equivalent Cl(1)La4 trigonal pyramids, and  an edgeedge with one N(1)La4 tetrahedra.