VCoAl is Frank-Kasper $\mu$ Phase-derived structured and crystallizes in the orthorhombic Amm2 space group. There are three inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to two equivalent Co(1), four equivalent Co(2), two equivalent Al(2), and four equivalent Al(1) atoms. In the second V site, V(2) is bonded in a 12-coordinate geometry to two equivalent V(2), two equivalent V(3), two equivalent Co(1), two equivalent Al(1), and four equivalent Al(2) atoms. In the third V site, V(3) is bonded in a 12-coordinate geometry to four equivalent V(2), two equivalent Co(1), two equivalent Al(1), and four equivalent Al(2) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one V(1), one V(3), two equivalent V(2), two equivalent Co(2), three equivalent Al(1), and three equivalent Al(2) atoms to form distorted CoAl6V4Co2 cuboctahedra that share corners with four equivalent Co(2)Al6V2Co4 cuboctahedra, edges with six equivalent Co(1)Al6V4Co2 cuboctahedra, faces with two equivalent Co(1)Al6V4Co2 cuboctahedra, and faces with six equivalent Co(2)Al6V2Co4 cuboctahedra. In the second Co site, Co(2) is bonded to two equivalent V(1), two equivalent Co(1), two equivalent Co(2), two equivalent Al(2), and four equivalent Al(1) atoms to form distorted CoAl6V2Co4 cuboctahedra that share corners with four equivalent Co(2)Al6V2Co4 cuboctahedra, corners with four equivalent Co(1)Al6V4Co2 cuboctahedra, edges with two equivalent Co(2)Al6V2Co4 cuboctahedra, faces with four equivalent Co(2)Al6V2Co4 cuboctahedra, and faces with six equivalent Co(1)Al6V4Co2 cuboctahedra. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a 16-coordinate geometry to one V(3), two equivalent V(1), two equivalent V(2), three equivalent Co(1), four equivalent Co(2), one Al(1), and three equivalent Al(2) atoms. In the second Al site, Al(2) is bonded in a 15-coordinate geometry to one V(1), two equivalent V(3), four equivalent V(2), two equivalent Co(2), three equivalent Co(1), and three equivalent Al(1) atoms.
VCoAl is Frank-Kasper $\mu$ Phase-derived structured and crystallizes in the orthorhombic Amm2 space group. There are three inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to two equivalent Co(1), four equivalent Co(2), two equivalent Al(2), and four equivalent Al(1) atoms. Both V(1)-Co(1) bond lengths are 2.31 Å. There are two shorter (2.26 Å) and two longer (2.39 Å) V(1)-Co(2) bond lengths. Both V(1)-Al(2) bond lengths are 2.74 Å. All V(1)-Al(1) bond lengths are 2.83 Å. In the second V site, V(2) is bonded in a 12-coordinate geometry to two equivalent V(2), two equivalent V(3), two equivalent Co(1), two equivalent Al(1), and four equivalent Al(2) atoms. There is one shorter (2.35 Å) and one longer (2.53 Å) V(2)-V(2) bond length. There is one shorter (2.28 Å) and one longer (2.37 Å) V(2)-V(3) bond length. Both V(2)-Co(1) bond lengths are 2.48 Å. Both V(2)-Al(1) bond lengths are 2.93 Å. There are two shorter (2.81 Å) and two longer (2.90 Å) V(2)-Al(2) bond lengths. In the third V site, V(3) is bonded in a 12-coordinate geometry to four equivalent V(2), two equivalent Co(1), two equivalent Al(1), and four equivalent Al(2) atoms. Both V(3)-Co(1) bond lengths are 2.48 Å. Both V(3)-Al(1) bond lengths are 2.88 Å. All V(3)-Al(2) bond lengths are 2.95 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one V(1), one V(3), two equivalent V(2), two equivalent Co(2), three equivalent Al(1), and three equivalent Al(2) atoms to form distorted CoAl6V4Co2 cuboctahedra that share corners with four equivalent Co(2)Al6V2Co4 cuboctahedra, edges with six equivalent Co(1)Al6V4Co2 cuboctahedra, faces with two equivalent Co(1)Al6V4Co2 cuboctahedra, and faces with six equivalent Co(2)Al6V2Co4 cuboctahedra. Both Co(1)-Co(2) bond lengths are 2.48 Å. There is one shorter (2.71 Å) and two longer (2.82 Å) Co(1)-Al(1) bond lengths. There is one shorter (2.65 Å) and two longer (2.81 Å) Co(1)-Al(2) bond lengths. In the second Co site, Co(2) is bonded to two equivalent V(1), two equivalent Co(1), two equivalent Co(2), two equivalent Al(2), and four equivalent Al(1) atoms to form distorted CoAl6V2Co4 cuboctahedra that share corners with four equivalent Co(2)Al6V2Co4 cuboctahedra, corners with four equivalent Co(1)Al6V4Co2 cuboctahedra, edges with two equivalent Co(2)Al6V2Co4 cuboctahedra, faces with four equivalent Co(2)Al6V2Co4 cuboctahedra, and faces with six equivalent Co(1)Al6V4Co2 cuboctahedra. There is one shorter (2.37 Å) and one longer (2.51 Å) Co(2)-Co(2) bond length. Both Co(2)-Al(2) bond lengths are 2.69 Å. There are two shorter (2.63 Å) and two longer (2.83 Å) Co(2)-Al(1) bond lengths. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a 16-coordinate geometry to one V(3), two equivalent V(1), two equivalent V(2), three equivalent Co(1), four equivalent Co(2), one Al(1), and three equivalent Al(2) atoms. The Al(1)-Al(1) bond length is 2.84 Å. There is one shorter (2.81 Å) and two longer (2.92 Å) Al(1)-Al(2) bond lengths. In the second Al site, Al(2) is bonded in a 15-coordinate geometry to one V(1), two equivalent V(3), four equivalent V(2), two equivalent Co(2), three equivalent Co(1), and three equivalent Al(1) atoms.