BaC2 crystallizes in the tetragonal P4/mmm space group. Ba(1) is bonded to two equivalent C(1) and four equivalent C(2) atoms to form a mixture of corner and edge-sharing BaC6 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent C sites. In the first C site, C(1) is bonded in a linear geometry to two equivalent Ba(1) atoms. In the second C site, C(2) is bonded in a square co-planar geometry to four equivalent Ba(1) atoms.
BaC2 crystallizes in the tetragonal P4/mmm space group. Ba(1) is bonded to two equivalent C(1) and four equivalent C(2) atoms to form a mixture of corner and edge-sharing BaC6 octahedra. The corner-sharing octahedra are not tilted. Both Ba(1)-C(1) bond lengths are 2.70 Å. All Ba(1)-C(2) bond lengths are 2.94 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a linear geometry to two equivalent Ba(1) atoms. In the second C site, C(2) is bonded in a square co-planar geometry to four equivalent Ba(1) atoms.