Materials Data on LiAlSiH2O5 by Materials Project

Abstract

LiAlSiH2O5 crystallizes in the orthorhombic Pna2_1 space group. The structure is three-dimensional. Li1+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 1.96–2.05 Å. Al3+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of Al–O bond distances ranging from 1.76–1.80 Å. Si4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of Si–O bond distances ranging from 1.64–1.70 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one Li1+, one Al3+, and one O2- atom. The O–O bond length is 1.56 Å. In the second O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Li1+, one Al3+, and one Si4+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to one Li1+ and two H1+ atoms. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Li1+, one Si4+, and one O2- atom. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Al3+ and one Si4+ atom.