Materials Data on BeH2 by Materials Project
BeH2 crystallizes in the orthorhombic Ibam space group. The structure is three-dimensional. there are two inequivalent Be2+ sites. In the first Be2+ site, Be2+ is bonded to four equivalent H1- atoms to form corner-sharing BeH4 tetrahedra. All Be–H bond lengths are 1.43 Å. In the second Be2+ site, Be2+ is bonded to four H1- atoms to form corner-sharing BeH4 tetrahedra. There is three shorter (1.43 Å) and one longer (1.44 Å) Be–H bond length. There are two inequivalent H1- sites. In the first H1- site, H1- is bonded in a bent 120 degrees geometry to two equivalent Be2+ atoms. In the second H1- site, H1- is bonded in a bent 120 degrees geometry to two Be2+ atoms.
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