Materials Data on AlH4(SeO4)2 by Materials Project
AlH4(SeO4)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Al is bonded in an octahedral geometry to six O atoms. There are a spread of Al–O bond distances ranging from 1.89–1.96 Å. There are two inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.00 Å) and one longer (1.74 Å) H–O bond length. In the second H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.00 Å) and one longer (1.74 Å) H–O bond length. Se is bonded in a trigonal non-coplanar geometry to three O atoms. There are a spread of Se–O bond distances ranging from 1.70–1.73 Å. There are four inequivalent O sites. In the first O site, O is bonded in a distorted single-bond geometry to two H and one Se atom. In the second O site, O is bonded in a distorted trigonal non-coplanar geometry to one Al and two H atoms. In the third O site, O is bonded in a bent 120 degrees geometry to one Al and one Se atom. In the fourth O site, O is bonded in a bent 120 degrees geometry to one Al and one Se atom.