Materials Data on LiH(CO2)2 by Materials Project
LiHC2O4 crystallizes in the triclinic P1 space group. The structure is two-dimensional and consists of one carbon dioxide molecule and one HCO2Li sheet oriented in the (0, 1, 0) direction. In the HCO2Li sheet, Li1+ is bonded in a 4-coordinate geometry to two equivalent H1+ and two O2- atoms. Both Li–H bond lengths are 1.76 Å. There are one shorter (2.55 Å) and one longer (2.81 Å) Li–O bond lengths. C3+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.17 Å) and one longer (1.18 Å) C–O bond length. H1+ is bonded in a linear geometry to two equivalent Li1+ atoms. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Li1+ and one C3+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one Li1+ and one C3+ atom.