Materials Data on Li3Cr(CO3)3 by Materials Project
Li3Cr(CO3)3 crystallizes in the orthorhombic Ama2 space group. The structure is three-dimensional. there are three inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Li–O bond distances ranging from 1.99–2.60 Å. In the second Li1+ site, Li1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Li–O bond distances ranging from 2.00–2.40 Å. In the third Li1+ site, Li1+ is bonded in a 3-coordinate geometry to four O2- atoms. There are three shorter (1.95 Å) and one longer (2.40 Å) Li–O bond lengths. Cr3+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Cr–O bond distances ranging from 1.93–2.13 Å. There are two inequivalent C4+ sites. In the first C4+ site, C4+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of C–O bond distances ranging from 1.26–1.33 Å. In the second C4+ site, C4+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of C–O bond distances ranging from 1.27–1.33 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to three Li1+, one Cr3+, and one C4+ atom. In the second O2- site, O2- is bonded in a distorted T-shaped geometry to two Li1+ and one C4+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to two Li1+ and one C4+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+, one Cr3+, and one C4+ atom. In the fifth O2- site, O2- is bonded to two Li1+, one Cr3+, and one C4+ atom to form a mixture of distorted edge and corner-sharing OLi2CrC tetrahedra. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to one Li1+, one Cr3+, and one C4+ atom.