Materials Data on K2Fe2(SO4)3 by Materials Project
K2Fe2(SO4)3 crystallizes in the cubic P2_13 space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 3-coordinate geometry to fifteen O2- atoms. There are a spread of K–O bond distances ranging from 2.92–3.41 Å. In the second K1+ site, K1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.88–3.19 Å. There are two inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six equivalent SO4 tetrahedra. There are three shorter (2.12 Å) and three longer (2.14 Å) Fe–O bond lengths. In the second Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six equivalent SO4 tetrahedra. There are three shorter (2.14 Å) and three longer (2.17 Å) Fe–O bond lengths. S+5.33+ is bonded to four O2- atoms to form SO4 tetrahedra that share corners with four FeO6 octahedra. The corner-sharing octahedra tilt angles range from 15–52°. There are a spread of S–O bond distances ranging from 1.48–1.50 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to three K1+, one Fe3+, and one S+5.33+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two K1+, one Fe3+, and one S+5.33+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two K1+, one Fe3+, and one S+5.33+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Fe3+, and one S+5.33+ atom.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). LBNL Materials Project
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Contributing Organization:
- MIT; UC Berkeley; Duke; U Louvain
- DOE Contract Number:
- AC02-05CH11231; EDCBEE
- OSTI ID:
- 1313227
- Report Number(s):
- mp-944271
- Resource Relation:
- Related Information: https://materialsproject.org/citing
- Country of Publication:
- United States
- Language:
- English
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