Materials Data on KCuC2 by Materials Project
KCuC2 crystallizes in the tetragonal P4_2/mmc space group. The structure is three-dimensional. K1+ is bonded in a distorted body-centered cubic geometry to eight equivalent C1- atoms. All K–C bond lengths are 3.19 Å. Cu1+ is bonded in a linear geometry to two equivalent C1- atoms. Both Cu–C bond lengths are 1.83 Å. C1- is bonded in a 2-coordinate geometry to four equivalent K1+, one Cu1+, and one C1- atom. The C–C bond length is 1.25 Å.
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