Rh2Se3 is Corundum-like structured and crystallizes in the orthorhombic Pbcn space group. Rh(1) is bonded to two equivalent Se(2) and four equivalent Se(1) atoms to form a mixture of corner, face, and edge-sharing RhSe6 octahedra. The corner-sharing octahedral tilt angles range from 48-70°. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded to four equivalent Rh(1) atoms to form a mixture of distorted corner and edge-sharing SeRh4 tetrahedra. In the second Se site, Se(2) is bonded to four equivalent Rh(1) atoms to form a mixture of distorted corner and edge-sharing SeRh4 trigonal pyramids.
Rh2Se3 is Corundum-like structured and crystallizes in the orthorhombic Pbcn space group. Rh(1) is bonded to two equivalent Se(2) and four equivalent Se(1) atoms to form a mixture of corner, face, and edge-sharing RhSe6 octahedra. The corner-sharing octahedral tilt angles range from 48-70°. There is one shorter (2.44 Å) and one longer (2.54 Å) Rh(1)-Se(2) bond length. There are a spread of Rh(1)-Se(1) bond distances ranging from 2.47-2.53 Å. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded to four equivalent Rh(1) atoms to form a mixture of distorted corner and edge-sharing SeRh4 tetrahedra. In the second Se site, Se(2) is bonded to four equivalent Rh(1) atoms to form a mixture of distorted corner and edge-sharing SeRh4 trigonal pyramids.