Ba2Ga3Al crystallizes in the monoclinic Cm space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 12-coordinate geometry to three equivalent Ga(1), three equivalent Ga(2), three equivalent Ga(3), and three equivalent Al(1) atoms. In the second Ba site, Ba(2) is bonded in a 12-coordinate geometry to three equivalent Ga(1), three equivalent Ga(2), three equivalent Ga(3), and three equivalent Al(1) atoms. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 10-coordinate geometry to three equivalent Ba(1), three equivalent Ba(2), one Ga(2), two equivalent Ga(3), and one Al(1) atom. In the second Ga site, Ga(2) is bonded in a 10-coordinate geometry to three equivalent Ba(1), three equivalent Ba(2), one Ga(1), one Ga(3), and two equivalent Al(1) atoms. In the third Ga site, Ga(3) is bonded in a 10-coordinate geometry to three equivalent Ba(1), three equivalent Ba(2), one Ga(2), two equivalent Ga(1), and one Al(1) atom. Al(1) is bonded in a 10-coordinate geometry to three equivalent Ba(1), three equivalent Ba(2), one Ga(1), one Ga(3), and two equivalent Ga(2) atoms.
Ba2Ga3Al crystallizes in the monoclinic Cm space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 12-coordinate geometry to three equivalent Ga(1), three equivalent Ga(2), three equivalent Ga(3), and three equivalent Al(1) atoms. There are two shorter (3.34 Å) and one longer (3.49 Å) Ba(1)-Ga(1) bond length. There are two shorter (3.33 Å) and one longer (3.46 Å) Ba(1)-Ga(2) bond length. There is one shorter (3.46 Å) and two longer (3.74 Å) Ba(1)-Ga(3) bond lengths. There is one shorter (3.44 Å) and two longer (3.73 Å) Ba(1)-Al(1) bond lengths. In the second Ba site, Ba(2) is bonded in a 12-coordinate geometry to three equivalent Ga(1), three equivalent Ga(2), three equivalent Ga(3), and three equivalent Al(1) atoms. There is one shorter (3.44 Å) and two longer (3.73 Å) Ba(2)-Ga(1) bond lengths. There is one shorter (3.45 Å) and two longer (3.74 Å) Ba(2)-Ga(2) bond lengths. There are two shorter (3.32 Å) and one longer (3.48 Å) Ba(2)-Ga(3) bond length. There are two shorter (3.34 Å) and one longer (3.49 Å) Ba(2)-Al(1) bond length. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 10-coordinate geometry to three equivalent Ba(1), three equivalent Ba(2), one Ga(2), two equivalent Ga(3), and one Al(1) atom. The Ga(1)-Ga(2) bond length is 2.86 Å. Both Ga(1)-Ga(3) bond lengths are 2.86 Å. The Ga(1)-Al(1) bond length is 2.79 Å. In the second Ga site, Ga(2) is bonded in a 10-coordinate geometry to three equivalent Ba(1), three equivalent Ba(2), one Ga(1), one Ga(3), and two equivalent Al(1) atoms. The Ga(2)-Ga(3) bond length is 2.82 Å. Both Ga(2)-Al(1) bond lengths are 2.85 Å. In the third Ga site, Ga(3) is bonded in a 10-coordinate geometry to three equivalent Ba(1), three equivalent Ba(2), one Ga(2), two equivalent Ga(1), and one Al(1) atom. The Ga(3)-Al(1) bond length is 2.84 Å. Al(1) is bonded in a 10-coordinate geometry to three equivalent Ba(1), three equivalent Ba(2), one Ga(1), one Ga(3), and two equivalent Ga(2) atoms.