SiC2 crystallizes in the cubic Pa-3 space group. Si(1) is bonded to six equivalent C(1) atoms to form SiC6 octahedra that share corners with twelve equivalent Si(1)C6 octahedra and corners with six equivalent C(1)Si3C tetrahedra. The corner-sharing octahedral tilt angles are 71°. C(1) is bonded to three equivalent Si(1) and one C(1) atom to form CSi3C tetrahedra that share corners with three equivalent Si(1)C6 octahedra and corners with fifteen equivalent C(1)Si3C tetrahedra. The corner-sharing octahedral tilt angles are 70°.
SiC2 crystallizes in the cubic Pa-3 space group. Si(1) is bonded to six equivalent C(1) atoms to form SiC6 octahedra that share corners with twelve equivalent Si(1)C6 octahedra and corners with six equivalent C(1)Si3C tetrahedra. The corner-sharing octahedral tilt angles are 71°. All Si(1)-C(1) bond lengths are 2.08 Å. C(1) is bonded to three equivalent Si(1) and one C(1) atom to form CSi3C tetrahedra that share corners with three equivalent Si(1)C6 octahedra and corners with fifteen equivalent C(1)Si3C tetrahedra. The corner-sharing octahedral tilt angles are 70°. The C(1)-C(1) bond length is 1.36 Å.