TcAg3 is alpha bismuth trifluoride structured and crystallizes in the tetragonal I4/mmm space group. Tc(1) is bonded to four equivalent Ag(2) and eight equivalent Ag(1) atoms to form TcAg12 cuboctahedra that share corners with four equivalent Tc(1)Ag12 cuboctahedra, corners with eight equivalent Ag(2)Tc4Ag8 cuboctahedra, edges with eight equivalent Tc(1)Ag12 cuboctahedra, edges with sixteen equivalent Ag(1)Tc4Ag8 cuboctahedra, faces with four equivalent Tc(1)Ag12 cuboctahedra, faces with six equivalent Ag(2)Tc4Ag8 cuboctahedra, and faces with eight equivalent Ag(1)Tc4Ag8 cuboctahedra. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to four equivalent Tc(1), four equivalent Ag(1), and four equivalent Ag(2) atoms to form AgTc4Ag8 cuboctahedra that share corners with twelve equivalent Ag(1)Tc4Ag8 cuboctahedra, edges with eight equivalent Tc(1)Ag12 cuboctahedra, edges with eight equivalent Ag(1)Tc4Ag8 cuboctahedra, edges with eight equivalent Ag(2)Tc4Ag8 cuboctahedra, faces with four equivalent Tc(1)Ag12 cuboctahedra, faces with four equivalent Ag(2)Tc4Ag8 cuboctahedra, and faces with ten equivalent Ag(1)Tc4Ag8 cuboctahedra. In the second Ag site, Ag(2) is bonded to four equivalent Tc(1) and eight equivalent Ag(1) atoms to form AgTc4Ag8 cuboctahedra that share corners with four equivalent Ag(2)Tc4Ag8 cuboctahedra, corners with eight equivalent Tc(1)Ag12 cuboctahedra, edges with eight equivalent Ag(2)Tc4Ag8 cuboctahedra, edges with sixteen equivalent Ag(1)Tc4Ag8 cuboctahedra, faces with four equivalent Ag(2)Tc4Ag8 cuboctahedra, faces with six equivalent Tc(1)Ag12 cuboctahedra, and faces with eight equivalent Ag(1)Tc4Ag8 cuboctahedra.
TcAg3 is alpha bismuth trifluoride structured and crystallizes in the tetragonal I4/mmm space group. Tc(1) is bonded to four equivalent Ag(2) and eight equivalent Ag(1) atoms to form TcAg12 cuboctahedra that share corners with four equivalent Tc(1)Ag12 cuboctahedra, corners with eight equivalent Ag(2)Tc4Ag8 cuboctahedra, edges with eight equivalent Tc(1)Ag12 cuboctahedra, edges with sixteen equivalent Ag(1)Tc4Ag8 cuboctahedra, faces with four equivalent Tc(1)Ag12 cuboctahedra, faces with six equivalent Ag(2)Tc4Ag8 cuboctahedra, and faces with eight equivalent Ag(1)Tc4Ag8 cuboctahedra. All Tc(1)-Ag(2) bond lengths are 3.01 Å. All Tc(1)-Ag(1) bond lengths are 2.88 Å. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to four equivalent Tc(1), four equivalent Ag(1), and four equivalent Ag(2) atoms to form AgTc4Ag8 cuboctahedra that share corners with twelve equivalent Ag(1)Tc4Ag8 cuboctahedra, edges with eight equivalent Tc(1)Ag12 cuboctahedra, edges with eight equivalent Ag(1)Tc4Ag8 cuboctahedra, edges with eight equivalent Ag(2)Tc4Ag8 cuboctahedra, faces with four equivalent Tc(1)Ag12 cuboctahedra, faces with four equivalent Ag(2)Tc4Ag8 cuboctahedra, and faces with ten equivalent Ag(1)Tc4Ag8 cuboctahedra. All Ag(1)-Ag(1) bond lengths are 3.01 Å. All Ag(1)-Ag(2) bond lengths are 2.88 Å. In the second Ag site, Ag(2) is bonded to four equivalent Tc(1) and eight equivalent Ag(1) atoms to form AgTc4Ag8 cuboctahedra that share corners with four equivalent Ag(2)Tc4Ag8 cuboctahedra, corners with eight equivalent Tc(1)Ag12 cuboctahedra, edges with eight equivalent Ag(2)Tc4Ag8 cuboctahedra, edges with sixteen equivalent Ag(1)Tc4Ag8 cuboctahedra, faces with four equivalent Ag(2)Tc4Ag8 cuboctahedra, faces with six equivalent Tc(1)Ag12 cuboctahedra, and faces with eight equivalent Ag(1)Tc4Ag8 cuboctahedra.