Au7Ga2 crystallizes in the hexagonal P-62m space group. There are six inequivalent Au sites. In the first Au site, Au(1) is bonded in a distorted trigonal non-coplanar geometry to one Au(4), one Ga(2), and two equivalent Ga(1) atoms. In the second Au site, Au(2) is bonded in a distorted trigonal planar geometry to three equivalent Au(4), one Ga(2), and two equivalent Ga(1) atoms. In the third Au site, Au(3) is bonded in a 2-coordinate geometry to two equivalent Ga(2) atoms. In the fourth Au site, Au(4) is bonded in a 13-coordinate geometry to one Au(6), two equivalent Au(1), six equivalent Au(2), and four equivalent Ga(1) atoms. In the fifth Au site, Au(5) is bonded in a distorted linear geometry to two equivalent Ga(1) atoms. In the sixth Au site, Au(6) is bonded in a distorted linear geometry to three equivalent Au(4) and two equivalent Ga(2) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 10-coordinate geometry to one Au(5), three equivalent Au(1), three equivalent Au(2), and three equivalent Au(4) atoms. In the second Ga site, Ga(2) is bonded in a distorted q6 geometry to one Au(6), three equivalent Au(1), three equivalent Au(2), and three equivalent Au(3) atoms.
Au7Ga2 crystallizes in the hexagonal P-62m space group. There are six inequivalent Au sites. In the first Au site, Au(1) is bonded in a distorted trigonal non-coplanar geometry to one Au(4), one Ga(2), and two equivalent Ga(1) atoms. The Au(1)-Au(4) bond length is 2.96 Å. The Au(1)-Ga(2) bond length is 2.77 Å. Both Au(1)-Ga(1) bond lengths are 2.78 Å. In the second Au site, Au(2) is bonded in a distorted trigonal planar geometry to three equivalent Au(4), one Ga(2), and two equivalent Ga(1) atoms. There is one shorter (2.85 Å) and two longer (3.07 Å) Au(2)-Au(4) bond lengths. The Au(2)-Ga(2) bond length is 2.74 Å. Both Au(2)-Ga(1) bond lengths are 2.65 Å. In the third Au site, Au(3) is bonded in a 2-coordinate geometry to two equivalent Ga(2) atoms. Both Au(3)-Ga(2) bond lengths are 2.74 Å. In the fourth Au site, Au(4) is bonded in a 13-coordinate geometry to one Au(6), two equivalent Au(1), six equivalent Au(2), and four equivalent Ga(1) atoms. The Au(4)-Au(6) bond length is 2.86 Å. All Au(4)-Ga(1) bond lengths are 2.99 Å. In the fifth Au site, Au(5) is bonded in a distorted linear geometry to two equivalent Ga(1) atoms. Both Au(5)-Ga(1) bond lengths are 2.77 Å. In the sixth Au site, Au(6) is bonded in a distorted linear geometry to three equivalent Au(4) and two equivalent Ga(2) atoms. Both Au(6)-Ga(2) bond lengths are 2.73 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 10-coordinate geometry to one Au(5), three equivalent Au(1), three equivalent Au(2), and three equivalent Au(4) atoms. In the second Ga site, Ga(2) is bonded in a distorted q6 geometry to one Au(6), three equivalent Au(1), three equivalent Au(2), and three equivalent Au(3) atoms.