Ta2V3Mn crystallizes in the trigonal R-3m space group. Ta(1) is bonded in a 16-coordinate geometry to four equivalent Ta(1), nine equivalent V(1), and three equivalent Mn(1) atoms. V(1) is bonded to six equivalent Ta(1), four equivalent V(1), and two equivalent Mn(1) atoms to form VTa6Mn2V4 cuboctahedra that share corners with four equivalent Mn(1)Ta6V6 cuboctahedra, corners with fourteen equivalent V(1)Ta6Mn2V4 cuboctahedra, edges with six equivalent V(1)Ta6Mn2V4 cuboctahedra, faces with six equivalent Mn(1)Ta6V6 cuboctahedra, and faces with twelve equivalent V(1)Ta6Mn2V4 cuboctahedra. Mn(1) is bonded to six equivalent Ta(1) and six equivalent V(1) atoms to form distorted MnTa6V6 cuboctahedra that share corners with six equivalent Mn(1)Ta6V6 cuboctahedra, corners with twelve equivalent V(1)Ta6Mn2V4 cuboctahedra, edges with six equivalent Mn(1)Ta6V6 cuboctahedra, and faces with eighteen equivalent V(1)Ta6Mn2V4 cuboctahedra.
Ta2V3Mn crystallizes in the trigonal R-3m space group. Ta(1) is bonded in a 16-coordinate geometry to four equivalent Ta(1), nine equivalent V(1), and three equivalent Mn(1) atoms. There is one shorter (2.99 Å) and three longer (3.06 Å) Ta(1)-Ta(1) bond lengths. There are three shorter (2.87 Å) and six longer (2.92 Å) Ta(1)-V(1) bond lengths. All Ta(1)-Mn(1) bond lengths are 2.94 Å. V(1) is bonded to six equivalent Ta(1), four equivalent V(1), and two equivalent Mn(1) atoms to form VTa6Mn2V4 cuboctahedra that share corners with four equivalent Mn(1)Ta6V6 cuboctahedra, corners with fourteen equivalent V(1)Ta6Mn2V4 cuboctahedra, edges with six equivalent V(1)Ta6Mn2V4 cuboctahedra, faces with six equivalent Mn(1)Ta6V6 cuboctahedra, and faces with twelve equivalent V(1)Ta6Mn2V4 cuboctahedra. All V(1)-V(1) bond lengths are 2.51 Å. Both V(1)-Mn(1) bond lengths are 2.46 Å. Mn(1) is bonded to six equivalent Ta(1) and six equivalent V(1) atoms to form distorted MnTa6V6 cuboctahedra that share corners with six equivalent Mn(1)Ta6V6 cuboctahedra, corners with twelve equivalent V(1)Ta6Mn2V4 cuboctahedra, edges with six equivalent Mn(1)Ta6V6 cuboctahedra, and faces with eighteen equivalent V(1)Ta6Mn2V4 cuboctahedra.