Materials Data on Hg3As by Materials Project
(Hg)2AsHg is alpha Niobium phosphide-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is two-dimensional and consists of two AsHg sheets oriented in the (0, 0, 1) direction and two Hg sheets oriented in the (0, 0, 1) direction. In each AsHg sheet, Hg1+ is bonded in a square co-planar geometry to four equivalent As3- atoms. All Hg–As bond lengths are 2.98 Å. As3- is bonded in a square co-planar geometry to four equivalent Hg1+ atoms. In each Hg sheet, Hg1+ is bonded in a square co-planar geometry to four equivalent Hg1+ atoms. All Hg–Hg bond lengths are 2.98 Å.