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DOE OSTI2020

Materials Data on Tb(BC)2 by Materials Project

TbB2C2 crystallizes in the tetragonal P4_2/mmc space group. The structure is three-dimensional. Tb4+ is bonded in a 8-coordinate geometry to eight equivalent C2- atoms. All Tb–C bond lengths are 2.72 Å. B is bonded in a 2-coordinate geometry to one B and two equivalent C2- atoms. The B–B bond length is 1.64 Å. Both B–C bond lengths are 1.61 Å. C2- is bonded in a 2-coordinate geometry to four equivalent Tb4+, two equivalent B, and one C2- atom. The C–C bond length is 1.43 Å.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Tb(BC)2 by Materials Project

TbB2C2 crystallizes in the tetragonal P4/mbm space group. The structure is three-dimensional. Tb4+ is bonded in a body-centered cubic geometry to eight equivalent C2- atoms. All Tb–C bond lengths are 2.70 Å. B is bonded in a distorted trigonal planar geometry to three equivalent C2- atoms. There is one shorter (1.53 Å) and two longer (1.61 Å) B–C bond length. C2- is bonded in a 3-coordinate geometry to four equivalent Tb4+ and three equivalent B atoms.

36 MATERIALS SCIENCE↗