Tc3C is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Tc(1) is bonded in a 4-coordinate geometry to four equivalent C(1) atoms. C(1) is bonded to twelve equivalent Tc(1) atoms to form a mixture of face and corner-sharing CTc12 cuboctahedra.
Tc3C is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Tc(1) is bonded in a 4-coordinate geometry to four equivalent C(1) atoms. There are two shorter (2.52 Å) and two longer (2.67 Å) Tc(1)-C(1) bond lengths. C(1) is bonded to twelve equivalent Tc(1) atoms to form a mixture of face and corner-sharing CTc12 cuboctahedra.