Materials Data on ErHSe by Materials Project
ErHSe crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Er3+ is bonded in a distorted trigonal planar geometry to three equivalent H1- and six equivalent Se2- atoms. All Er–H bond lengths are 2.20 Å. All Er–Se bond lengths are 2.93 Å. H1- is bonded in a trigonal planar geometry to three equivalent Er3+ atoms. Se2- is bonded to six equivalent Er3+ atoms to form a mixture of distorted edge, corner, and face-sharing SeEr6 pentagonal pyramids.
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