Cr(RhSe2)2 crystallizes in the monoclinic C2/m space group. Cr(1) is bonded to two equivalent Rh(1), two equivalent Se(2), and four equivalent Se(1) atoms to form distorted edge-sharing CrRh2Se6 octahedra. Rh(1) is bonded in a 7-coordinate geometry to one Cr(1), three equivalent Se(1), and three equivalent Se(2) atoms. There are two inequivalent Se sites. In the first Se site, Se(2) is bonded in a rectangular see-saw-like geometry to one Cr(1) and three equivalent Rh(1) atoms. In the second Se site, Se(1) is bonded in a 5-coordinate geometry to two equivalent Cr(1) and three equivalent Rh(1) atoms.
Cr(RhSe2)2 crystallizes in the monoclinic C2/m space group. Cr(1) is bonded to two equivalent Rh(1), two equivalent Se(2), and four equivalent Se(1) atoms to form distorted edge-sharing CrRh2Se6 octahedra. Both Cr(1)-Rh(1) bond lengths are 2.88 Å. Both Cr(1)-Se(2) bond lengths are 2.62 Å. All Cr(1)-Se(1) bond lengths are 2.58 Å. Rh(1) is bonded in a 7-coordinate geometry to one Cr(1), three equivalent Se(1), and three equivalent Se(2) atoms. There is one shorter (2.58 Å) and two longer (2.62 Å) Rh(1)-Se(1) bond lengths. There are two shorter (2.47 Å) and one longer (2.50 Å) Rh(1)-Se(2) bond length. There are two inequivalent Se sites. In the first Se site, Se(2) is bonded in a rectangular see-saw-like geometry to one Cr(1) and three equivalent Rh(1) atoms. In the second Se site, Se(1) is bonded in a 5-coordinate geometry to two equivalent Cr(1) and three equivalent Rh(1) atoms.