Materials Data on CaHI by Materials Project
CaHI crystallizes in the tetragonal P4/nmm space group. The structure is two-dimensional and consists of one CaHI sheet oriented in the (0, 0, 1) direction. Ca2+ is bonded in a 4-coordinate geometry to four equivalent H1- and four equivalent I1- atoms. All Ca–H bond lengths are 2.35 Å. All Ca–I bond lengths are 3.27 Å. H1- is bonded to four equivalent Ca2+ atoms to form a mixture of corner and edge-sharing HCa4 tetrahedra. I1- is bonded in a 4-coordinate geometry to four equivalent Ca2+ atoms.
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