MgCeS3 is Ilmenite-like structured and crystallizes in the monoclinic C2/m space group. Mg(1) is bonded to two equivalent S(2) and four equivalent S(1) atoms to form distorted edge-sharing MgS6 octahedra. Ce(1) is bonded in a 6-coordinate geometry to two equivalent S(2) and four equivalent S(1) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Mg(1) and two equivalent Ce(1) atoms. In the second S site, S(2) is bonded to two equivalent Mg(1) and two equivalent Ce(1) atoms to form edge-sharing SCe2Mg2 trigonal pyramids.
MgCeS3 is Ilmenite-like structured and crystallizes in the monoclinic C2/m space group. Mg(1) is bonded to two equivalent S(2) and four equivalent S(1) atoms to form distorted edge-sharing MgS6 octahedra. Both Mg(1)-S(2) bond lengths are 2.60 Å. There are two shorter (2.55 Å) and two longer (2.74 Å) Mg(1)-S(1) bond lengths. Ce(1) is bonded in a 6-coordinate geometry to two equivalent S(2) and four equivalent S(1) atoms. There is one shorter (2.71 Å) and one longer (2.72 Å) Ce(1)-S(2) bond length. There are two shorter (2.61 Å) and two longer (3.17 Å) Ce(1)-S(1) bond lengths. There are two inequivalent S sites. In the first S site, S(1) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Mg(1) and two equivalent Ce(1) atoms. In the second S site, S(2) is bonded to two equivalent Mg(1) and two equivalent Ce(1) atoms to form edge-sharing SCe2Mg2 trigonal pyramids.