Materials Data on Hg3PO4 by Materials Project

Abstract

Hg3PO4 crystallizes in the monoclinic P2_1/c space group. The structure is two-dimensional and consists of one Hg3PO4 sheet oriented in the (1, 0, 0) direction. there are three inequivalent Hg1+ sites. In the first Hg1+ site, Hg1+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of Hg–O bond distances ranging from 2.37–2.47 Å. In the second Hg1+ site, Hg1+ is bonded in a 1-coordinate geometry to three O2- atoms. There are a spread of Hg–O bond distances ranging from 2.25–2.79 Å. In the third Hg1+ site, Hg1+ is bonded in a 1-coordinate geometry to one O2- atom. The Hg–O bond length is 2.17 Å. P5+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of P–O bond distances ranging from 1.54–1.58 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to two Hg1+ and one P5+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two Hg1+ and one P5+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to two Hg1+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Hg1+ and one P5+ atom.