YbCeS3 crystallizes in the orthorhombic Cmcm space group. Yb(1) is bonded to two equivalent S(2) and four equivalent S(1) atoms to form a mixture of edge and corner-sharing YbS6 octahedra. The corner-sharing octahedral tilt angles are 63°. Ce(1) is bonded in a 8-coordinate geometry to two equivalent S(2) and six equivalent S(1) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded to two equivalent Yb(1) and three equivalent Ce(1) atoms to form distorted SYb2Ce3 trigonal bipyramids that share corners with four equivalent S(2)Yb2Ce2 tetrahedra, corners with nine equivalent S(1)Yb2Ce3 trigonal bipyramids, edges with three equivalent S(2)Yb2Ce2 tetrahedra, and edges with six equivalent S(1)Yb2Ce3 trigonal bipyramids. In the second S site, S(2) is bonded to two equivalent Yb(1) and two equivalent Ce(1) atoms to form SYb2Ce2 tetrahedra that share corners with four equivalent S(2)Yb2Ce2 tetrahedra, corners with eight equivalent S(1)Yb2Ce3 trigonal bipyramids, and edges with six equivalent S(1)Yb2Ce3 trigonal bipyramids.
YbCeS3 crystallizes in the orthorhombic Cmcm space group. Yb(1) is bonded to two equivalent S(2) and four equivalent S(1) atoms to form a mixture of edge and corner-sharing YbS6 octahedra. The corner-sharing octahedral tilt angles are 63°. Both Yb(1)-S(2) bond lengths are 2.70 Å. All Yb(1)-S(1) bond lengths are 2.84 Å. Ce(1) is bonded in a 8-coordinate geometry to two equivalent S(2) and six equivalent S(1) atoms. Both Ce(1)-S(2) bond lengths are 2.71 Å. There are four shorter (2.86 Å) and two longer (3.25 Å) Ce(1)-S(1) bond lengths. There are two inequivalent S sites. In the first S site, S(1) is bonded to two equivalent Yb(1) and three equivalent Ce(1) atoms to form distorted SYb2Ce3 trigonal bipyramids that share corners with four equivalent S(2)Yb2Ce2 tetrahedra, corners with nine equivalent S(1)Yb2Ce3 trigonal bipyramids, edges with three equivalent S(2)Yb2Ce2 tetrahedra, and edges with six equivalent S(1)Yb2Ce3 trigonal bipyramids. In the second S site, S(2) is bonded to two equivalent Yb(1) and two equivalent Ce(1) atoms to form SYb2Ce2 tetrahedra that share corners with four equivalent S(2)Yb2Ce2 tetrahedra, corners with eight equivalent S(1)Yb2Ce3 trigonal bipyramids, and edges with six equivalent S(1)Yb2Ce3 trigonal bipyramids.