KTc2Si crystallizes in the cubic F-43m space group. K(1) is bonded in a distorted body-centered cubic geometry to four equivalent Tc(2), six equivalent Tc(1), and four equivalent Si(1) atoms. There are two inequivalent Tc sites. In the first Tc site, Tc(1) is bonded in a 14-coordinate geometry to six equivalent K(1), four equivalent Tc(2), and four equivalent Si(1) atoms. In the second Tc site, Tc(2) is bonded to four equivalent K(1) and four equivalent Tc(1) atoms to form distorted TcK4Tc4 tetrahedra that share corners with eight equivalent Si(1)K4Tc4 tetrahedra, edges with twelve equivalent Tc(2)K4Tc4 tetrahedra, and faces with six equivalent Si(1)K4Tc4 tetrahedra. Si(1) is bonded to four equivalent K(1) and four equivalent Tc(1) atoms to form distorted SiK4Tc4 tetrahedra that share corners with eight equivalent Tc(2)K4Tc4 tetrahedra, edges with twelve equivalent Si(1)K4Tc4 tetrahedra, and faces with six equivalent Tc(2)K4Tc4 tetrahedra.
KTc2Si crystallizes in the cubic F-43m space group. K(1) is bonded in a distorted body-centered cubic geometry to four equivalent Tc(2), six equivalent Tc(1), and four equivalent Si(1) atoms. All K(1)-Tc(2) bond lengths are 2.79 Å. All K(1)-Tc(1) bond lengths are 3.22 Å. All K(1)-Si(1) bond lengths are 2.79 Å. There are two inequivalent Tc sites. In the first Tc site, Tc(1) is bonded in a 14-coordinate geometry to six equivalent K(1), four equivalent Tc(2), and four equivalent Si(1) atoms. All Tc(1)-Tc(2) bond lengths are 2.79 Å. All Tc(1)-Si(1) bond lengths are 2.79 Å. In the second Tc site, Tc(2) is bonded to four equivalent K(1) and four equivalent Tc(1) atoms to form distorted TcK4Tc4 tetrahedra that share corners with eight equivalent Si(1)K4Tc4 tetrahedra, edges with twelve equivalent Tc(2)K4Tc4 tetrahedra, and faces with six equivalent Si(1)K4Tc4 tetrahedra. Si(1) is bonded to four equivalent K(1) and four equivalent Tc(1) atoms to form distorted SiK4Tc4 tetrahedra that share corners with eight equivalent Tc(2)K4Tc4 tetrahedra, edges with twelve equivalent Si(1)K4Tc4 tetrahedra, and faces with six equivalent Tc(2)K4Tc4 tetrahedra.