Materials Data on Al2H12(SeO5)3 by Materials Project
Al2H12(SeO5)3 crystallizes in the hexagonal P-62c space group. The structure is three-dimensional. Al3+ is bonded in an octahedral geometry to six O2- atoms. There is three shorter (1.91 Å) and three longer (1.93 Å) Al–O bond length. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.62 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a single-bond geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.74 Å) H–O bond length. Se4+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There is one shorter (1.69 Å) and two longer (1.76 Å) Se–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Al3+ and two H1+ atoms. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to one Al3+, one H1+, and one Se4+ atom. In the third O2- site, O2- is bonded in a trigonal planar geometry to two equivalent H1+ and one Se4+ atom.