DOI: 10.17188/1683346
title: Materials Data on Li2Fe2(CO3)3 by Materials Project

description: Li2Fe2(CO3)3 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are four inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 2.00–2.22 Å. In the second Li1+ site, Li1+ is bonded in a distorted square co-planar geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 2.01–2.18 Å. In the third Li1+ site, Li1+ is bonded in a 3-coordinate geometry to six O2- atoms. There are a spread of Li–O bond distances ranging from 2.09–2.65 Å. In the fourth Li1+ site, Li1+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 2.01–2.19 Å. There are four inequivalent Fe2+ sites. In the first Fe2+ site, Fe2+ is bonded to six O2- atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles are 65°. There are a spread of Fe–O bond distances ranging from 2.11–2.23 Å. In the second Fe2+ site, Fe2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Fe–O bond distances ranging from 2.21–2.28 Å. In the third Fe2+ site, Fe2+ is bonded to six O2- atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedra tilt angles range from 64–65°. There are a spread of Fe–O bond distances ranging from 2.10–2.24 Å. In the fourth Fe2+ site, Fe2+ is bonded to six O2- atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedra tilt angles range from 64–65°. There are a spread of Fe–O bond distances ranging from 2.09–2.22 Å. There are six inequivalent C4+ sites. In the first C4+ site, C4+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.29 Å) and one longer (1.33 Å) C–O bond length. 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 1.29–1.31 Å. In the third C4+ site, C4+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.29 Å) and one longer (1.33 Å) C–O bond length. In the fourth C4+ site, C4+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.29 Å) and two longer (1.30 Å) C–O bond length. In the fifth C4+ site, C4+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.29 Å) and two longer (1.30 Å) C–O bond length. In the sixth C4+ site, C4+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.29 Å) and one longer (1.33 Å) C–O bond length. There are eighteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+, one Fe2+, and one C4+ atom. In the second O2- site, O2- is bonded to two Li1+, one Fe2+, and one C4+ atom to form distorted corner-sharing OLi2FeC tetrahedra. In the third O2- site, O2- is bonded in a trigonal planar geometry to two Fe2+ and one C4+ atom. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+, one Fe2+, and one C4+ atom. In the fifth O2- site, O2- is bonded to two Li1+, one Fe2+, and one C4+ atom to form distorted corner-sharing OLi2FeC tetrahedra. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to two Li1+, one Fe2+, and one C4+ atom. In the seventh O2- site, O2- is bonded in a distorted trigonal planar geometry to two Fe2+ and one C4+ atom. In the eighth O2- site, O2- is bonded in a 1-coordinate geometry to two Fe2+ and one C4+ atom. In the ninth O2- site, O2- is bonded in a 4-coordinate geometry to two Li1+, one Fe2+, and one C4+ atom. In the tenth O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+, one Fe2+, and one C4+ atom. In the eleventh O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+, one Fe2+, and one C4+ atom. In the twelfth O2- site, O2- is bonded in a 4-coordinate geometry to two Li1+, one Fe2+, and one C4+ atom. In the thirteenth O2- site, O2- is bonded in a 3-coordinate geometry to two Fe2+ and one C4+ atom. In the fourteenth O2- site, O2- is bonded in a trigonal planar geometry to two Fe2+ and one C4+ atom. In the fifteenth O2- site, O2- is bonded in a trigonal planar geometry to two Fe2+ and one C4+ atom. In the sixteenth O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+, one Fe2+, and one C4+ atom. In the seventeenth O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+, one Fe2+, and one C4+ atom. In the eighteenth O2- site, O2- is bonded to two Li1+, one Fe2+, and one C4+ atom to form distorted corner-sharing OLi2FeC tetrahedra.