Al8V5 is gamma-brass-like structured and crystallizes in the monoclinic Cm space group. There are seven inequivalent V sites. In the first V site, V(1) is bonded in a 12-coordinate geometry to one V(7), two equivalent V(4), two equivalent V(6), one Al(10), one Al(2), one Al(7), two equivalent Al(1), and two equivalent Al(3) atoms. In the second V site, V(2) is bonded in a 12-coordinate geometry to one V(4), one V(5), one V(6), one V(7), one Al(1), one Al(3), one Al(5), one Al(6), one Al(8), one Al(9), and two equivalent Al(4) atoms. In the third V site, V(3) is bonded in a distorted cuboctahedral geometry to one V(5), two equivalent V(6), one Al(10), one Al(2), one Al(7), two equivalent Al(5), two equivalent Al(6), and two equivalent Al(8) atoms. In the fourth V site, V(4) is bonded in a 13-coordinate geometry to one V(1), one V(2), one V(6), one V(7), one Al(1), one Al(4), one Al(5), one Al(7), one Al(8), two equivalent Al(3), and two equivalent Al(6) atoms. In the fifth V site, V(5) is bonded in a 12-coordinate geometry to one V(3), one V(7), two equivalent V(2), two equivalent V(6), one Al(2), one Al(9), two equivalent Al(1), and two equivalent Al(8) atoms. In the sixth V site, V(6) is bonded in a distorted q6 geometry to one V(1), one V(2), one V(3), one V(4), one V(5), one V(6), one V(7), one Al(10), one Al(3), one Al(4), one Al(5), and one Al(8) atom. In the seventh V site, V(7) is bonded in a distorted q6 geometry to one V(1), one V(5), two equivalent V(2), two equivalent V(4), two equivalent V(6), one Al(7), one Al(9), and two equivalent Al(6) atoms. There are ten inequivalent Al sites. In the first Al site, Al(1) is bonded in a 11-coordinate geometry to one V(1), one V(2), one V(4), one V(5), one Al(3), one Al(4), one Al(5), one Al(7), one Al(9), and two equivalent Al(8) atoms. In the second Al site, Al(2) is bonded in a 11-coordinate geometry to one V(1), one V(3), one V(5), one Al(10), one Al(9), two equivalent Al(3), two equivalent Al(6), and two equivalent Al(8) atoms. In the third Al site, Al(3) is bonded in a 11-coordinate geometry to one V(1), one V(2), one V(6), two equivalent V(4), one Al(1), one Al(10), one Al(2), one Al(4), one Al(6), and one Al(8) atom. In the fourth Al site, Al(4) is bonded in a 10-coordinate geometry to one V(4), one V(6), two equivalent V(2), one Al(1), one Al(3), one Al(5), one Al(6), one Al(8), and one Al(9) atom. In the fifth Al site, Al(5) is bonded in a 11-coordinate geometry to one V(2), one V(3), one V(4), one V(6), one Al(1), one Al(10), one Al(4), one Al(6), one Al(7), and two equivalent Al(8) atoms. In the sixth Al site, Al(6) is bonded in a 11-coordinate geometry to one V(2), one V(3), one V(7), two equivalent V(4), one Al(2), one Al(3), one Al(4), one Al(5), one Al(8), and one Al(9) atom. In the seventh Al site, Al(7) is bonded in a 10-coordinate geometry to one V(1), one V(3), one V(7), two equivalent V(4), one Al(10), two equivalent Al(1), and two equivalent Al(5) atoms. In the eighth Al site, Al(8) is bonded in a 13-coordinate geometry to one V(2), one V(3), one V(4), one V(5), one V(6), one Al(2), one Al(3), one Al(4), one Al(6), two equivalent Al(1), and two equivalent Al(5) atoms. In the ninth Al site, Al(9) is bonded in a 12-coordinate geometry to one V(5), one V(7), two equivalent V(2), one Al(10), one Al(2), two equivalent Al(1), two equivalent Al(4), and two equivalent Al(6) atoms. In the tenth Al site, Al(10) is bonded in a 11-coordinate geometry to one V(1), one V(3), two equivalent V(6), one Al(2), one Al(7), one Al(9), two equivalent Al(3), and two equivalent Al(5) atoms.
Al8V5 is gamma-brass-like structured and crystallizes in the monoclinic Cm space group. There are seven inequivalent V sites. In the first V site, V(1) is bonded in a 12-coordinate geometry to one V(7), two equivalent V(4), two equivalent V(6), one Al(10), one Al(2), one Al(7), two equivalent Al(1), and two equivalent Al(3) atoms. The V(1)-V(7) bond length is 2.70 Å. Both V(1)-V(4) bond lengths are 2.74 Å. Both V(1)-V(6) bond lengths are 2.64 Å. The V(1)-Al(10) bond length is 2.70 Å. The V(1)-Al(2) bond length is 2.60 Å. The V(1)-Al(7) bond length is 2.58 Å. Both V(1)-Al(1) bond lengths are 2.67 Å. Both V(1)-Al(3) bond lengths are 2.63 Å. In the second V site, V(2) is bonded in a 12-coordinate geometry to one V(4), one V(5), one V(6), one V(7), one Al(1), one Al(3), one Al(5), one Al(6), one Al(8), one Al(9), and two equivalent Al(4) atoms. The V(2)-V(4) bond length is 2.82 Å. The V(2)-V(5) bond length is 2.58 Å. The V(2)-V(6) bond length is 2.64 Å. The V(2)-V(7) bond length is 2.60 Å. The V(2)-Al(1) bond length is 2.64 Å. The V(2)-Al(3) bond length is 2.71 Å. The V(2)-Al(5) bond length is 2.68 Å. The V(2)-Al(6) bond length is 2.65 Å. The V(2)-Al(8) bond length is 2.73 Å. The V(2)-Al(9) bond length is 2.73 Å. There is one shorter (2.61 Å) and one longer (2.62 Å) V(2)-Al(4) bond length. In the third V site, V(3) is bonded in a distorted cuboctahedral geometry to one V(5), two equivalent V(6), one Al(10), one Al(2), one Al(7), two equivalent Al(5), two equivalent Al(6), and two equivalent Al(8) atoms. The V(3)-V(5) bond length is 2.62 Å. Both V(3)-V(6) bond lengths are 2.57 Å. The V(3)-Al(10) bond length is 2.78 Å. The V(3)-Al(2) bond length is 2.63 Å. The V(3)-Al(7) bond length is 2.64 Å. Both V(3)-Al(5) bond lengths are 2.67 Å. Both V(3)-Al(6) bond lengths are 2.69 Å. Both V(3)-Al(8) bond lengths are 2.76 Å. In the fourth V site, V(4) is bonded in a 13-coordinate geometry to one V(1), one V(2), one V(6), one V(7), one Al(1), one Al(4), one Al(5), one Al(7), one Al(8), two equivalent Al(3), and two equivalent Al(6) atoms. The V(4)-V(6) bond length is 2.67 Å. The V(4)-V(7) bond length is 2.62 Å. The V(4)-Al(1) bond length is 2.66 Å. The V(4)-Al(4) bond length is 2.78 Å. The V(4)-Al(5) bond length is 2.97 Å. The V(4)-Al(7) bond length is 2.73 Å. The V(4)-Al(8) bond length is 2.75 Å. There is one shorter (2.72 Å) and one longer (2.83 Å) V(4)-Al(3) bond length. There is one shorter (2.78 Å) and one longer (3.12 Å) V(4)-Al(6) bond length. In the fifth V site, V(5) is bonded in a 12-coordinate geometry to one V(3), one V(7), two equivalent V(2), two equivalent V(6), one Al(2), one Al(9), two equivalent Al(1), and two equivalent Al(8) atoms. The V(5)-V(7) bond length is 2.64 Å. Both V(5)-V(6) bond lengths are 2.69 Å. The V(5)-Al(2) bond length is 2.62 Å. The V(5)-Al(9) bond length is 2.62 Å. Both V(5)-Al(1) bond lengths are 2.71 Å. Both V(5)-Al(8) bond lengths are 2.67 Å. In the sixth V site, V(6) is bonded in a distorted q6 geometry to one V(1), one V(2), one V(3), one V(4), one V(5), one V(6), one V(7), one Al(10), one Al(3), one Al(4), one Al(5), and one Al(8) atom. The V(6)-V(6) bond length is 2.59 Å. The V(6)-V(7) bond length is 2.64 Å. The V(6)-Al(10) bond length is 2.62 Å. The V(6)-Al(3) bond length is 2.73 Å. The V(6)-Al(4) bond length is 2.62 Å. The V(6)-Al(5) bond length is 2.71 Å. The V(6)-Al(8) bond length is 2.68 Å. In the seventh V site, V(7) is bonded in a distorted q6 geometry to one V(1), one V(5), two equivalent V(2), two equivalent V(4), two equivalent V(6), one Al(7), one Al(9), and two equivalent Al(6) atoms. The V(7)-Al(7) bond length is 2.62 Å. The V(7)-Al(9) bond length is 2.62 Å. Both V(7)-Al(6) bond lengths are 2.70 Å. There are ten inequivalent Al sites. In the first Al site, Al(1) is bonded in a 11-coordinate geometry to one V(1), one V(2), one V(4), one V(5), one Al(3), one Al(4), one Al(5), one Al(7), one Al(9), and two equivalent Al(8) atoms. The Al(1)-Al(3) bond length is 2.76 Å. The Al(1)-Al(4) bond length is 2.83 Å. The Al(1)-Al(5) bond length is 2.84 Å. The Al(1)-Al(7) bond length is 2.75 Å. The Al(1)-Al(9) bond length is 2.87 Å. There is one shorter (2.92 Å) and one longer (3.02 Å) Al(1)-Al(8) bond length. In the second Al site, Al(2) is bonded in a 11-coordinate geometry to one V(1), one V(3), one V(5), one Al(10), one Al(9), two equivalent Al(3), two equivalent Al(6), and two equivalent Al(8) atoms. The Al(2)-Al(10) bond length is 2.75 Å. The Al(2)-Al(9) bond length is 3.08 Å. Both Al(2)-Al(3) bond lengths are 2.83 Å. Both Al(2)-Al(6) bond lengths are 2.81 Å. Both Al(2)-Al(8) bond lengths are 2.85 Å. In the third Al site, Al(3) is bonded in a 11-coordinate geometry to one V(1), one V(2), one V(6), two equivalent V(4), one Al(1), one Al(10), one Al(2), one Al(4), one Al(6), and one Al(8) atom. The Al(3)-Al(10) bond length is 2.92 Å. The Al(3)-Al(4) bond length is 2.76 Å. The Al(3)-Al(6) bond length is 2.69 Å. The Al(3)-Al(8) bond length is 3.08 Å. In the fourth Al site, Al(4) is bonded in a 10-coordinate geometry to one V(4), one V(6), two equivalent V(2), one Al(1), one Al(3), one Al(5), one Al(6), one Al(8), and one Al(9) atom. The Al(4)-Al(5) bond length is 2.83 Å. The Al(4)-Al(6) bond length is 2.77 Å. The Al(4)-Al(8) bond length is 2.88 Å. The Al(4)-Al(9) bond length is 2.80 Å. In the fifth Al site, Al(5) is bonded in a 11-coordinate geometry to one V(2), one V(3), one V(4), one V(6), one Al(1), one Al(10), one Al(4), one Al(6), one Al(7), and two equivalent Al(8) atoms. The Al(5)-Al(10) bond length is 2.88 Å. The Al(5)-Al(6) bond length is 2.78 Å. The Al(5)-Al(7) bond length is 2.76 Å. There is one shorter (2.63 Å) and one longer (2.91 Å) Al(5)-Al(8) bond length. In the sixth Al site, Al(6) is bonded in a 11-coordinate geometry to one V(2), one V(3), one V(7), two equivalent V(4), one Al(2), one Al(3), one Al(4), one Al(5), one Al(8), and one Al(9) atom. The Al(6)-Al(8) bond length is 2.64 Å. The Al(6)-Al(9) bond length is 2.92 Å. In the seventh Al site, Al(7) is bonded in a 10-coordinate geometry to one V(1), one V(3), one V(7), two equivalent V(4), one Al(10), two equivalent Al(1), and two equivalent Al(5) atoms. The Al(7)-Al(10) bond length is 2.80 Å. In the eighth Al site, Al(8) is bonded in a 13-coordinate geometry to one V(2), one V(3), one V(4), one V(5), one V(6), one Al(2), one Al(3), one Al(4), one Al(6), two equivalent Al(1), and two equivalent Al(5) atoms. In the ninth Al site, Al(9) is bonded in a 12-coordinate geometry to one V(5), one V(7), two equivalent V(2), one Al(10), one Al(2), two equivalent Al(1), two equivalent Al(4), and two equivalent Al(6) atoms. The Al(9)-Al(10) bond length is 2.64 Å. In the tenth Al site, Al(10) is bonded in a 11-coordinate geometry to one V(1), one V(3), two equivalent V(6), one Al(2), one Al(7), one Al(9), two equivalent Al(3), and two equivalent Al(5) atoms.