C is diamond-like structured and crystallizes in the trigonal R-3m space group. There are four inequivalent C sites. In the first C site, C(1,5) is bonded to one C(1,5) and three equivalent C(3) atoms to form corner-sharing CC4 tetrahedra. In the second C site, C(2) is bonded to one C(3) and three equivalent C(2) atoms to form corner-sharing CC4 tetrahedra. In the third C site, C(3) is bonded to one C(2) and three equivalent C(1,5) atoms to form corner-sharing CC4 tetrahedra. In the fourth C site, C(4) is bonded to one C(4) and three equivalent C(1,5) atoms to form corner-sharing CC4 tetrahedra.
C is diamond-like structured and crystallizes in the trigonal R-3m space group. There are four inequivalent C sites. In the first C site, C(1,5) is bonded to one C(1,5) and three equivalent C(3) atoms to form corner-sharing CC4 tetrahedra. The C(1,5)-C(1,5) bond length is 1.56 Å. All C(1,5)-C(3) bond lengths are 1.54 Å. In the second C site, C(2) is bonded to one C(3) and three equivalent C(2) atoms to form corner-sharing CC4 tetrahedra. The C(2)-C(3) bond length is 1.54 Å. All C(2)-C(2) bond lengths are 1.54 Å. In the third C site, C(3) is bonded to one C(2) and three equivalent C(1,5) atoms to form corner-sharing CC4 tetrahedra. In the fourth C site, C(4) is bonded to one C(4) and three equivalent C(1,5) atoms to form corner-sharing CC4 tetrahedra. The C(4)-C(4) bond length is 1.54 Å. All C(4)-C(1,5) bond lengths are 1.54 Å.