Ba2Sb2F11 crystallizes in the trigonal P3_2 space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 9-coordinate geometry to one F(10), one F(11), one F(3), one F(5), one F(6), one F(7), one F(8), and two equivalent F(4) atoms. In the second Ba site, Ba(2) is bonded in a 10-coordinate geometry to one F(1), one F(10), one F(3), one F(4), one F(5), one F(6), one F(7), one F(9), and two equivalent F(2) atoms. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 4-coordinate geometry to one F(1), one F(2), one F(3), one F(4), and one F(7) atom. In the second Sb site, Sb(2) is bonded in an octahedral geometry to one F(1), one F(10), one F(11), one F(6), one F(8), and one F(9) atom. There are eleven inequivalent F sites. In the first F site, F(11) is bonded in a bent 150 degrees geometry to one Ba(1) and one Sb(2) atom. In the second F site, F(1) is bonded in a distorted single-bond geometry to one Ba(2), one Sb(1), and one Sb(2) atom. In the third F site, F(2) is bonded in a 3-coordinate geometry to two equivalent Ba(2) and one Sb(1) atom. In the fourth F site, F(3) is bonded in a 2-coordinate geometry to one Ba(1), one Ba(2), and one Sb(1) atom. In the fifth F site, F(4) is bonded in a 4-coordinate geometry to one Ba(2), two equivalent Ba(1), and one Sb(1) atom. In the sixth F site, F(5) is bonded in a bent 150 degrees geometry to one Ba(1) and one Ba(2) atom. In the seventh F site, F(6) is bonded in a distorted single-bond geometry to one Ba(1), one Ba(2), and one Sb(2) atom. In the eighth F site, F(7) is bonded in a distorted trigonal non-coplanar geometry to one Ba(1), one Ba(2), and one Sb(1) atom. In the ninth F site, F(8) is bonded in a distorted bent 120 degrees geometry to one Ba(1) and one Sb(2) atom. In the tenth F site, F(9) is bonded in a bent 120 degrees geometry to one Ba(2) and one Sb(2) atom. In the eleventh F site, F(10) is bonded in a distorted single-bond geometry to one Ba(1), one Ba(2), and one Sb(2) atom.
Ba2Sb2F11 crystallizes in the trigonal P3_2 space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 9-coordinate geometry to one F(10), one F(11), one F(3), one F(5), one F(6), one F(7), one F(8), and two equivalent F(4) atoms. The Ba(1)-F(10) bond length is 3.38 Å. The Ba(1)-F(11) bond length is 2.69 Å. The Ba(1)-F(3) bond length is 2.82 Å. The Ba(1)-F(5) bond length is 2.49 Å. The Ba(1)-F(6) bond length is 2.94 Å. The Ba(1)-F(7) bond length is 2.85 Å. The Ba(1)-F(8) bond length is 2.78 Å. Both Ba(1)-F(4) bond lengths are 2.95 Å. In the second Ba site, Ba(2) is bonded in a 10-coordinate geometry to one F(1), one F(10), one F(3), one F(4), one F(5), one F(6), one F(7), one F(9), and two equivalent F(2) atoms. The Ba(2)-F(1) bond length is 2.92 Å. The Ba(2)-F(10) bond length is 2.97 Å. The Ba(2)-F(3) bond length is 3.38 Å. The Ba(2)-F(4) bond length is 3.19 Å. The Ba(2)-F(5) bond length is 2.43 Å. The Ba(2)-F(6) bond length is 3.30 Å. The Ba(2)-F(7) bond length is 2.86 Å. The Ba(2)-F(9) bond length is 2.68 Å. There is one shorter (2.92 Å) and one longer (3.30 Å) Ba(2)-F(2) bond length. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 4-coordinate geometry to one F(1), one F(2), one F(3), one F(4), and one F(7) atom. The Sb(1)-F(1) bond length is 2.63 Å. The Sb(1)-F(2) bond length is 2.09 Å. The Sb(1)-F(3) bond length is 2.00 Å. The Sb(1)-F(4) bond length is 2.17 Å. The Sb(1)-F(7) bond length is 2.02 Å. In the second Sb site, Sb(2) is bonded in an octahedral geometry to one F(1), one F(10), one F(11), one F(6), one F(8), and one F(9) atom. The Sb(2)-F(1) bond length is 2.07 Å. The Sb(2)-F(10) bond length is 2.03 Å. The Sb(2)-F(11) bond length is 2.07 Å. The Sb(2)-F(6) bond length is 2.10 Å. The Sb(2)-F(8) bond length is 2.11 Å. The Sb(2)-F(9) bond length is 2.04 Å. There are eleven inequivalent F sites. In the first F site, F(11) is bonded in a bent 150 degrees geometry to one Ba(1) and one Sb(2) atom. In the second F site, F(1) is bonded in a distorted single-bond geometry to one Ba(2), one Sb(1), and one Sb(2) atom. In the third F site, F(2) is bonded in a 3-coordinate geometry to two equivalent Ba(2) and one Sb(1) atom. In the fourth F site, F(3) is bonded in a 2-coordinate geometry to one Ba(1), one Ba(2), and one Sb(1) atom. In the fifth F site, F(4) is bonded in a 4-coordinate geometry to one Ba(2), two equivalent Ba(1), and one Sb(1) atom. In the sixth F site, F(5) is bonded in a bent 150 degrees geometry to one Ba(1) and one Ba(2) atom. In the seventh F site, F(6) is bonded in a distorted single-bond geometry to one Ba(1), one Ba(2), and one Sb(2) atom. In the eighth F site, F(7) is bonded in a distorted trigonal non-coplanar geometry to one Ba(1), one Ba(2), and one Sb(1) atom. In the ninth F site, F(8) is bonded in a distorted bent 120 degrees geometry to one Ba(1) and one Sb(2) atom. In the tenth F site, F(9) is bonded in a bent 120 degrees geometry to one Ba(2) and one Sb(2) atom. In the eleventh F site, F(10) is bonded in a distorted single-bond geometry to one Ba(1), one Ba(2), and one Sb(2) atom.