Materials Data on LiBH2C4O9 by Materials Project
LiBC4H2O9 crystallizes in the orthorhombic Pbca space group. The structure is two-dimensional and consists of two LiBC4H2O9 sheets oriented in the (0, 0, 1) direction. Li1+ is bonded to six O2- atoms to form face-sharing LiO6 octahedra. There are a spread of Li–O bond distances ranging from 2.05–2.22 Å. B3+ is bonded in a tetrahedral geometry to four O2- atoms. There is two shorter (1.48 Å) and two longer (1.49 Å) B–O bond length. There are four inequivalent C3+ sites. In the first C3+ site, C3+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.22 Å) and one longer (1.33 Å) C–O bond length. In the second C3+ site, C3+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.22 Å) and one longer (1.33 Å) C–O bond length. In the third C3+ site, C3+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.22 Å) and one longer (1.32 Å) C–O bond length. In the fourth C3+ site, C3+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.22 Å) and one longer (1.33 Å) C–O bond length. 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 0.98 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded in a water-like geometry to one B3+ and one C3+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one C3+ atom. In the third O2- site, O2- is bonded to two equivalent Li1+ and two H1+ atoms to form distorted corner-sharing OLi2H2 tetrahedra. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Li1+ and one C3+ atom. In the fifth O2- site, O2- is bonded in a single-bond geometry to one C3+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Li1+ and one C3+ atom. In the seventh O2- site, O2- is bonded in a water-like geometry to one B3+ and one C3+ atom. In the eighth O2- site, O2- is bonded in a water-like geometry to one B3+ and one C3+ atom. In the ninth O2- site, O2- is bonded in a water-like geometry to one B3+ and one C3+ atom.