Pm2S3 is Corundum structured and crystallizes in the trigonal R-3c space group. Pm(1) is bonded to six equivalent S(1) atoms to form a mixture of edge, face, and corner-sharing PmS6 octahedra. The corner-sharing octahedral tilt angles range from 48-63°. S(1) is bonded to four equivalent Pm(1) atoms to form a mixture of distorted edge and corner-sharing SPm4 trigonal pyramids.
Pm2S3 is Corundum structured and crystallizes in the trigonal R-3c space group. Pm(1) is bonded to six equivalent S(1) atoms to form a mixture of edge, face, and corner-sharing PmS6 octahedra. The corner-sharing octahedral tilt angles range from 48-63°. There are three shorter (2.78 Å) and three longer (2.87 Å) Pm(1)-S(1) bond lengths. S(1) is bonded to four equivalent Pm(1) atoms to form a mixture of distorted edge and corner-sharing SPm4 trigonal pyramids.