10.17188/1203000
None Available
Materials Data on KC8 by Materials Project
LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
2020
Specialized Mix
36 MATERIALS SCIENCE
crystal structure
KC8
C-K
The Materials Project
2020
en
KC8 crystallizes in the orthorhombic Fddd space group. The structure is three-dimensional. K1+ is bonded to twelve C+0.12- atoms to form edge-sharing KC12 cuboctahedra. There are eight shorter (3.04 Å) and four longer (3.06 Å) K–C bond lengths. There are two inequivalent C+0.12- sites. In the first C+0.12- site, C+0.12- is bonded in a distorted trigonal planar geometry to two equivalent K1+ and three C+0.12- atoms. There is two shorter (1.43 Å) and one longer (1.44 Å) C–C bond length. In the second C+0.12- site, C+0.12- is bonded in a distorted trigonal planar geometry to one K1+ and three C+0.12- atoms. The C–C bond length is 1.43 Å.