Materials Data on NaHgCl3O2 by Materials Project
NaHgO2Cl3 crystallizes in the orthorhombic Pnma space group. The structure is one-dimensional and consists of four NaHgO2Cl3 ribbons oriented in the (1, 0, 0) direction. Na is bonded to three O and one Cl atom to form distorted corner-sharing NaClO3 tetrahedra. There are two shorter (2.32 Å) and one longer (2.36 Å) Na–O bond lengths. The Na–Cl bond length is 2.90 Å. Hg is bonded in a linear geometry to two Cl atoms. There are one shorter (2.35 Å) and one longer (2.37 Å) Hg–Cl bond lengths. There are two inequivalent O sites. In the first O site, O is bonded in a trigonal planar geometry to two equivalent Na and one Cl atom. The O–Cl bond length is 1.64 Å. In the second O site, O is bonded in a single-bond geometry to one Na atom. There are three inequivalent Cl sites. In the first Cl site, Cl is bonded in a water-like geometry to one Na and one Hg atom. In the second Cl site, Cl is bonded in a single-bond geometry to one O atom. In the third Cl site, Cl is bonded in a single-bond geometry to one Hg atom.