Materials Data on KCr4O8 by Materials Project

Dataset · Thu Jul 16 00:00:00 EDT 2020

DOI:https://doi.org/10.17188/1193585· OSTI ID:1193585

The Materials Project

KCr4O8 crystallizes in the tetragonal I4/m space group. The structure is three-dimensional. K1+ is bonded in a distorted body-centered cubic geometry to eight equivalent O2- atoms. All K–O bond lengths are 2.95 Å. Cr+3.75+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing CrO6 octahedra. The corner-sharing octahedral tilt angles are 50°. There are a spread of Cr–O bond distances ranging from 1.90–2.00 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to three equivalent Cr+3.75+ atoms. In the second O2- site, O2- is bonded in a 5-coordinate geometry to two equivalent K1+ and three equivalent Cr+3.75+ atoms.

• 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: 1193585
• Report Number(s): mp-18881
• Resource Relation: Related Information: https://materialsproject.org/citing
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
crystal structure
KCr4O8
Cr-K-O