HgP2Se crystallizes in the cubic F-43m space group. Hg(1) is bonded in a body-centered cubic geometry to four equivalent P(2) and four equivalent Se(1) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded to four equivalent Se(1) atoms to form corner-sharing PSe4 tetrahedra. In the second P site, P(2) is bonded to four equivalent Hg(1) atoms to form corner-sharing PHg4 tetrahedra. Se(1) is bonded in a body-centered cubic geometry to four equivalent Hg(1) and four equivalent P(1) atoms.
HgP2Se crystallizes in the cubic F-43m space group. Hg(1) is bonded in a body-centered cubic geometry to four equivalent P(2) and four equivalent Se(1) atoms. All Hg(1)-P(2) bond lengths are 2.91 Å. All Hg(1)-Se(1) bond lengths are 2.91 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to four equivalent Se(1) atoms to form corner-sharing PSe4 tetrahedra. All P(1)-Se(1) bond lengths are 2.91 Å. In the second P site, P(2) is bonded to four equivalent Hg(1) atoms to form corner-sharing PHg4 tetrahedra. Se(1) is bonded in a body-centered cubic geometry to four equivalent Hg(1) and four equivalent P(1) atoms.