Hg2P3Cl crystallizes in the monoclinic C2/c space group. Hg(1) is bonded in a 5-coordinate geometry to one P(2), two equivalent P(1), and two equivalent Cl(1) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded to two equivalent Hg(1), one P(1), and one P(2) atom to form distorted corner-sharing PHg2P2 tetrahedra. In the second P site, P(2) is bonded to two equivalent Hg(1) and two equivalent P(1) atoms to form corner-sharing PHg2P2 tetrahedra. Cl(1) is bonded in a distorted rectangular see-saw-like geometry to four equivalent Hg(1) atoms.
Hg2P3Cl crystallizes in the monoclinic C2/c space group. Hg(1) is bonded in a 5-coordinate geometry to one P(2), two equivalent P(1), and two equivalent Cl(1) atoms. The Hg(1)-P(2) bond length is 2.48 Å. There is one shorter (2.47 Å) and one longer (2.95 Å) Hg(1)-P(1) bond length. There is one shorter (3.02 Å) and one longer (3.06 Å) Hg(1)-Cl(1) bond length. There are two inequivalent P sites. In the first P site, P(1) is bonded to two equivalent Hg(1), one P(1), and one P(2) atom to form distorted corner-sharing PHg2P2 tetrahedra. The P(1)-P(1) bond length is 2.19 Å. The P(1)-P(2) bond length is 2.20 Å. In the second P site, P(2) is bonded to two equivalent Hg(1) and two equivalent P(1) atoms to form corner-sharing PHg2P2 tetrahedra. Cl(1) is bonded in a distorted rectangular see-saw-like geometry to four equivalent Hg(1) atoms.