Materials Data on HgH10N2Cl4O by Materials Project

(HgCl3)2(NH4)4(H2O)2Cl2 crystallizes in the orthorhombic Pbam space group. The structure is zero-dimensional and consists of eight ammonium molecules, four hydrochloric acid molecules, four water molecules, and two HgCl3 clusters. In each HgCl3 cluster, Hg2+ is bonded in a distorted rectangular see-saw-like geometry to four Cl1- atoms. There are two shorter (2.41 Å) and two longer (2.86 Å) Hg–Cl bond lengths. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one Hg2+ atom. In the second Cl1- site, Cl1- is bonded in an L-shaped geometry to two equivalent Hg2+ atoms.