Ba3Ga2Al2(FeO6)2 crystallizes in the monoclinic P2_1 space group. There are three inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(3), one O(6), one O(7), and one O(8) atom. In the second Ba site, Ba(2) is bonded in a distorted q6 geometry to one O(1), one O(10), one O(11), one O(12), one O(2), one O(3), one O(6), one O(7), and one O(8) atom. In the third Ba site, Ba(3) is bonded in a 8-coordinate geometry to one O(11), one O(2), two equivalent O(4), two equivalent O(5), and two equivalent O(9) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(12), one O(2), and one O(9) atom to form FeO4 tetrahedra that share  a cornercorner with one Ga(1)O4 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra, and corners with two equivalent Ga(2)O4 tetrahedra. In the second Fe site, Fe(2) is bonded to one O(1), one O(5), one O(6), and one O(7) atom to form FeO4 tetrahedra that share  a cornercorner with one Ga(1)O4 tetrahedra,  a cornercorner with one Ga(2)O4 tetrahedra, and corners with two equivalent Al(1)O4 tetrahedra. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(11), one O(12), one O(5), and one O(8) atom to form GaO4 tetrahedra that share  a cornercorner with one Fe(1)O4 tetrahedra,  a cornercorner with one Fe(2)O4 tetrahedra, and corners with two equivalent Al(2)O4 tetrahedra. In the second Ga site, Ga(2) is bonded to one O(10), one O(2), one O(4), and one O(6) atom to form GaO4 tetrahedra that share  a cornercorner with one Fe(2)O4 tetrahedra,  a cornercorner with one Al(2)O4 tetrahedra, and corners with two equivalent Fe(1)O4 tetrahedra. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(1), one O(3), one O(7), and one O(9) atom to form AlO4 tetrahedra that share  a cornercorner with one Fe(1)O4 tetrahedra,  a cornercorner with one Al(2)O4 tetrahedra, and corners with two equivalent Fe(2)O4 tetrahedra. In the second Al site, Al(2) is bonded to one O(11), one O(3), one O(4), and one O(8) atom to form AlO4 tetrahedra that share  a cornercorner with one Ga(2)O4 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra, and corners with two equivalent Ga(1)O4 tetrahedra. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Ba(1), one Ba(2), one Fe(2), and one Al(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Ba(2), one Ba(3), one Fe(1), and one Ga(2) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Ba(1), one Ba(2), one Al(1), and one Al(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to two equivalent Ba(3), one Ga(2), and one Al(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to two equivalent Ba(3), one Fe(2), and one Ga(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), one Fe(2), and one Ga(2) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Ba(1), one Ba(2), one Fe(2), and one Al(1) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Ba(1), one Ba(2), one Ga(1), and one Al(2) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to two equivalent Ba(3), one Fe(1), and one Al(1) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), one Fe(1), and one Ga(2) atom. In the eleventh O site, O(11) is bonded in a distorted linear geometry to one Ba(1), one Ba(2), one Ba(3), one Ga(1), and one Al(2) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), one Fe(1), and one Ga(1) atom.
Ba3Ga2Al2(FeO6)2 crystallizes in the monoclinic P2_1 space group. There are three inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(3), one O(6), one O(7), and one O(8) atom. The Ba(1)-O(1) bond length is 2.91 Å. The Ba(1)-O(10) bond length is 2.84 Å. The Ba(1)-O(11) bond length is 3.30 Å. The Ba(1)-O(12) bond length is 2.82 Å. The Ba(1)-O(3) bond length is 2.91 Å. The Ba(1)-O(6) bond length is 2.79 Å. The Ba(1)-O(7) bond length is 3.18 Å. The Ba(1)-O(8) bond length is 2.83 Å. In the second Ba site, Ba(2) is bonded in a distorted q6 geometry to one O(1), one O(10), one O(11), one O(12), one O(2), one O(3), one O(6), one O(7), and one O(8) atom. The Ba(2)-O(1) bond length is 2.87 Å. The Ba(2)-O(10) bond length is 3.02 Å. The Ba(2)-O(11) bond length is 2.94 Å. The Ba(2)-O(12) bond length is 3.05 Å. The Ba(2)-O(2) bond length is 2.88 Å. The Ba(2)-O(3) bond length is 3.17 Å. The Ba(2)-O(6) bond length is 2.99 Å. The Ba(2)-O(7) bond length is 2.80 Å. The Ba(2)-O(8) bond length is 3.05 Å. In the third Ba site, Ba(3) is bonded in a 8-coordinate geometry to one O(11), one O(2), two equivalent O(4), two equivalent O(5), and two equivalent O(9) atoms. The Ba(3)-O(11) bond length is 3.08 Å. The Ba(3)-O(2) bond length is 2.89 Å. There is one shorter (2.91 Å) and one longer (2.94 Å) Ba(3)-O(4) bond length. There is one shorter (2.88 Å) and one longer (3.07 Å) Ba(3)-O(5) bond length. There is one shorter (2.74 Å) and one longer (3.06 Å) Ba(3)-O(9) bond length. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(12), one O(2), and one O(9) atom to form FeO4 tetrahedra that share  a cornercorner with one Ga(1)O4 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra, and corners with two equivalent Ga(2)O4 tetrahedra. The Fe(1)-O(10) bond length is 1.90 Å. The Fe(1)-O(12) bond length is 1.90 Å. The Fe(1)-O(2) bond length is 1.88 Å. The Fe(1)-O(9) bond length is 1.89 Å. In the second Fe site, Fe(2) is bonded to one O(1), one O(5), one O(6), and one O(7) atom to form FeO4 tetrahedra that share  a cornercorner with one Ga(1)O4 tetrahedra,  a cornercorner with one Ga(2)O4 tetrahedra, and corners with two equivalent Al(1)O4 tetrahedra. The Fe(2)-O(1) bond length is 1.90 Å. The Fe(2)-O(5) bond length is 1.89 Å. The Fe(2)-O(6) bond length is 1.90 Å. The Fe(2)-O(7) bond length is 1.86 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(11), one O(12), one O(5), and one O(8) atom to form GaO4 tetrahedra that share  a cornercorner with one Fe(1)O4 tetrahedra,  a cornercorner with one Fe(2)O4 tetrahedra, and corners with two equivalent Al(2)O4 tetrahedra. The Ga(1)-O(11) bond length is 1.85 Å. The Ga(1)-O(12) bond length is 1.86 Å. The Ga(1)-O(5) bond length is 1.86 Å. The Ga(1)-O(8) bond length is 1.86 Å. In the second Ga site, Ga(2) is bonded to one O(10), one O(2), one O(4), and one O(6) atom to form GaO4 tetrahedra that share  a cornercorner with one Fe(2)O4 tetrahedra,  a cornercorner with one Al(2)O4 tetrahedra, and corners with two equivalent Fe(1)O4 tetrahedra. The Ga(2)-O(10) bond length is 1.85 Å. The Ga(2)-O(2) bond length is 1.87 Å. The Ga(2)-O(4) bond length is 1.85 Å. The Ga(2)-O(6) bond length is 1.86 Å. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(1), one O(3), one O(7), and one O(9) atom to form AlO4 tetrahedra that share  a cornercorner with one Fe(1)O4 tetrahedra,  a cornercorner with one Al(2)O4 tetrahedra, and corners with two equivalent Fe(2)O4 tetrahedra. The Al(1)-O(1) bond length is 1.78 Å. The Al(1)-O(3) bond length is 1.77 Å. The Al(1)-O(7) bond length is 1.76 Å. The Al(1)-O(9) bond length is 1.78 Å. In the second Al site, Al(2) is bonded to one O(11), one O(3), one O(4), and one O(8) atom to form AlO4 tetrahedra that share  a cornercorner with one Ga(2)O4 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra, and corners with two equivalent Ga(1)O4 tetrahedra. The Al(2)-O(11) bond length is 1.76 Å. The Al(2)-O(3) bond length is 1.77 Å. The Al(2)-O(4) bond length is 1.79 Å. The Al(2)-O(8) bond length is 1.78 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Ba(1), one Ba(2), one Fe(2), and one Al(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Ba(2), one Ba(3), one Fe(1), and one Ga(2) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Ba(1), one Ba(2), one Al(1), and one Al(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to two equivalent Ba(3), one Ga(2), and one Al(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to two equivalent Ba(3), one Fe(2), and one Ga(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), one Fe(2), and one Ga(2) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Ba(1), one Ba(2), one Fe(2), and one Al(1) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Ba(1), one Ba(2), one Ga(1), and one Al(2) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to two equivalent Ba(3), one Fe(1), and one Al(1) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), one Fe(1), and one Ga(2) atom. In the eleventh O site, O(11) is bonded in a distorted linear geometry to one Ba(1), one Ba(2), one Ba(3), one Ga(1), and one Al(2) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), one Fe(1), and one Ga(1) atom.