V9GaGe2 crystallizes in the orthorhombic Pmmm space group. There are seven inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to one V(1), one V(2), two equivalent Ga(1), and two equivalent Ge(3) atoms. In the second V site, V(2) is bonded in a 6-coordinate geometry to one V(1), one V(3), two equivalent Ga(1), and two equivalent Ge(2) atoms. In the third V site, V(3) is bonded in a 6-coordinate geometry to one V(2), one V(3), two equivalent Ge(1), and two equivalent Ge(2) atoms. In the fourth V site, V(4) is bonded in a 6-coordinate geometry to two equivalent V(4), one Ga(1), one Ge(1), and two equivalent Ge(2) atoms. In the fifth V site, V(5) is bonded in a 6-coordinate geometry to two equivalent V(5), two equivalent Ga(1), and two equivalent Ge(3) atoms. In the sixth V site, V(6) is bonded in a 6-coordinate geometry to two equivalent V(6), two equivalent Ga(1), one Ge(2), and one Ge(3) atom. In the seventh V site, V(7) is bonded in a 6-coordinate geometry to two equivalent V(7), two equivalent Ge(1), and two equivalent Ge(2) atoms. Ga(1) is bonded to two equivalent V(1), two equivalent V(2), two equivalent V(4), two equivalent V(5), and four equivalent V(6) atoms to form GaV12 cuboctahedra that share  an edgeedge with one Ge(1)V12 cuboctahedra, edges with five equivalent Ga(1)V12 cuboctahedra, faces with four equivalent Ge(2)V12 cuboctahedra, and faces with four equivalent Ge(3)V12 cuboctahedra. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to four equivalent V(3), four equivalent V(4), and four equivalent V(7) atoms to form GeV12 cuboctahedra that share edges with two equivalent Ga(1)V12 cuboctahedra, edges with four equivalent Ge(1)V12 cuboctahedra, and faces with eight equivalent Ge(2)V12 cuboctahedra. In the second Ge site, Ge(2) is bonded to two equivalent V(2), two equivalent V(3), two equivalent V(6), two equivalent V(7), and four equivalent V(4) atoms to form GeV12 cuboctahedra that share  an edgeedge with one Ge(3)V12 cuboctahedra, edges with five equivalent Ge(2)V12 cuboctahedra, faces with four equivalent Ga(1)V12 cuboctahedra, and faces with four equivalent Ge(1)V12 cuboctahedra. In the third Ge site, Ge(3) is bonded to four equivalent V(1), four equivalent V(5), and four equivalent V(6) atoms to form GeV12 cuboctahedra that share edges with two equivalent Ge(2)V12 cuboctahedra, edges with four equivalent Ge(3)V12 cuboctahedra, and faces with eight equivalent Ga(1)V12 cuboctahedra.
V9GaGe2 crystallizes in the orthorhombic Pmmm space group. There are seven inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to one V(1), one V(2), two equivalent Ga(1), and two equivalent Ge(3) atoms. The V(1)-V(1) bond length is 2.33 Å. The V(1)-V(2) bond length is 2.37 Å. Both V(1)-Ga(1) bond lengths are 2.67 Å. Both V(1)-Ge(3) bond lengths are 2.67 Å. In the second V site, V(2) is bonded in a 6-coordinate geometry to one V(1), one V(3), two equivalent Ga(1), and two equivalent Ge(2) atoms. The V(2)-V(3) bond length is 2.33 Å. Both V(2)-Ga(1) bond lengths are 2.67 Å. Both V(2)-Ge(2) bond lengths are 2.67 Å. In the third V site, V(3) is bonded in a 6-coordinate geometry to one V(2), one V(3), two equivalent Ge(1), and two equivalent Ge(2) atoms. The V(3)-V(3) bond length is 2.39 Å. Both V(3)-Ge(1) bond lengths are 2.67 Å. Both V(3)-Ge(2) bond lengths are 2.66 Å. In the fourth V site, V(4) is bonded in a 6-coordinate geometry to two equivalent V(4), one Ga(1), one Ge(1), and two equivalent Ge(2) atoms. There is one shorter (2.34 Å) and one longer (2.46 Å) V(4)-V(4) bond length. The V(4)-Ga(1) bond length is 2.67 Å. The V(4)-Ge(1) bond length is 2.64 Å. Both V(4)-Ge(2) bond lengths are 2.66 Å. In the fifth V site, V(5) is bonded in a 6-coordinate geometry to two equivalent V(5), two equivalent Ga(1), and two equivalent Ge(3) atoms. There is one shorter (2.32 Å) and one longer (2.48 Å) V(5)-V(5) bond length. Both V(5)-Ga(1) bond lengths are 2.66 Å. Both V(5)-Ge(3) bond lengths are 2.66 Å. In the sixth V site, V(6) is bonded in a 6-coordinate geometry to two equivalent V(6), two equivalent Ga(1), one Ge(2), and one Ge(3) atom. There is one shorter (2.34 Å) and one longer (2.44 Å) V(6)-V(6) bond length. Both V(6)-Ga(1) bond lengths are 2.67 Å. The V(6)-Ge(2) bond length is 2.66 Å. The V(6)-Ge(3) bond length is 2.65 Å. In the seventh V site, V(7) is bonded in a 6-coordinate geometry to two equivalent V(7), two equivalent Ge(1), and two equivalent Ge(2) atoms. There is one shorter (2.32 Å) and one longer (2.46 Å) V(7)-V(7) bond length. Both V(7)-Ge(1) bond lengths are 2.67 Å. Both V(7)-Ge(2) bond lengths are 2.65 Å. Ga(1) is bonded to two equivalent V(1), two equivalent V(2), two equivalent V(4), two equivalent V(5), and four equivalent V(6) atoms to form GaV12 cuboctahedra that share  an edgeedge with one Ge(1)V12 cuboctahedra, edges with five equivalent Ga(1)V12 cuboctahedra, faces with four equivalent Ge(2)V12 cuboctahedra, and faces with four equivalent Ge(3)V12 cuboctahedra. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to four equivalent V(3), four equivalent V(4), and four equivalent V(7) atoms to form GeV12 cuboctahedra that share edges with two equivalent Ga(1)V12 cuboctahedra, edges with four equivalent Ge(1)V12 cuboctahedra, and faces with eight equivalent Ge(2)V12 cuboctahedra. In the second Ge site, Ge(2) is bonded to two equivalent V(2), two equivalent V(3), two equivalent V(6), two equivalent V(7), and four equivalent V(4) atoms to form GeV12 cuboctahedra that share  an edgeedge with one Ge(3)V12 cuboctahedra, edges with five equivalent Ge(2)V12 cuboctahedra, faces with four equivalent Ga(1)V12 cuboctahedra, and faces with four equivalent Ge(1)V12 cuboctahedra. In the third Ge site, Ge(3) is bonded to four equivalent V(1), four equivalent V(5), and four equivalent V(6) atoms to form GeV12 cuboctahedra that share edges with two equivalent Ge(2)V12 cuboctahedra, edges with four equivalent Ge(3)V12 cuboctahedra, and faces with eight equivalent Ga(1)V12 cuboctahedra.