Ba2YV2F11 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 10-coordinate geometry to one F(1), one F(11), one F(2), 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 8-coordinate geometry to one F(1), one F(2), one F(3), one F(5), one F(7), one F(9), and two equivalent F(8) atoms. Y(1) is bonded in a 7-coordinate geometry to one F(11), one F(3), one F(5), one F(7), one F(9), and two equivalent F(10) atoms. There are two inequivalent V sites. In the first V site, V(1) is bonded to one F(1), one F(2), one F(3), one F(4), one F(6), and one F(9) atom to form a mixture of corner and edge-sharing VF6 octahedra. The corner-sharing octahedral tilt angles are 63°. In the second V site, V(2) is bonded to one F(1), one F(10), one F(11), one F(6), one F(8), and one F(9) atom to form a mixture of corner and edge-sharing VF6 octahedra. The corner-sharing octahedral tilt angles are 63°. There are eleven inequivalent F sites. In the first F site, F(10) is bonded in a distorted water-like geometry to two equivalent Y(1) and one V(2) atom. In the second F site, F(11) is bonded in a distorted trigonal planar geometry to one Ba(1), one Y(1), and one V(2) atom. In the third F site, F(1) is bonded in a distorted water-like geometry to one Ba(1), one Ba(2), one V(1), and one V(2) atom. In the fourth F site, F(2) is bonded in a 3-coordinate geometry to one Ba(1), one Ba(2), and one V(1) atom. In the fifth F site, F(3) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), one Y(1), and one V(1) atom. In the sixth F site, F(4) is bonded in a 3-coordinate geometry to two equivalent Ba(1) and one V(1) atom. In the seventh F site, F(5) is bonded in a distorted trigonal non-coplanar geometry to one Ba(1), one Ba(2), and one Y(1) atom. In the eighth F site, F(6) is bonded in a distorted bent 120 degrees geometry to one Ba(1), one V(1), and one V(2) atom. In the ninth F site, F(7) is bonded in a 2-coordinate geometry to one Ba(1), one Ba(2), and one Y(1) atom. In the tenth F site, F(8) is bonded to one Ba(1), two equivalent Ba(2), and one V(2) atom to form distorted FBa3V tetrahedra that share  a cornercorner with one F(9)BaYV2 tetrahedra, corners with two equivalent F(8)Ba3V tetrahedra, and  an edgeedge with one F(9)BaYV2 tetrahedra. In the eleventh F site, F(9) is bonded to one Ba(2), one Y(1), one V(1), and one V(2) atom to form a mixture of distorted corner and edge-sharing FBaYV2 tetrahedra.
Ba2YV2F11 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 10-coordinate geometry to one F(1), one F(11), one F(2), 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(1) bond length is 2.95 Å. The Ba(1)-F(11) bond length is 2.71 Å. The Ba(1)-F(2) bond length is 2.90 Å. The Ba(1)-F(3) bond length is 3.13 Å. The Ba(1)-F(5) bond length is 2.75 Å. The Ba(1)-F(6) bond length is 2.90 Å. The Ba(1)-F(7) bond length is 3.10 Å. The Ba(1)-F(8) bond length is 2.87 Å. There is one shorter (2.69 Å) and one longer (2.71 Å) Ba(1)-F(4) bond length. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to one F(1), one F(2), one F(3), one F(5), one F(7), one F(9), and two equivalent F(8) atoms. The Ba(2)-F(1) bond length is 2.97 Å. The Ba(2)-F(2) bond length is 2.70 Å. The Ba(2)-F(3) bond length is 2.69 Å. The Ba(2)-F(5) bond length is 2.72 Å. The Ba(2)-F(7) bond length is 2.56 Å. The Ba(2)-F(9) bond length is 2.88 Å. There is one shorter (3.02 Å) and one longer (3.07 Å) Ba(2)-F(8) bond length. Y(1) is bonded in a 7-coordinate geometry to one F(11), one F(3), one F(5), one F(7), one F(9), and two equivalent F(10) atoms. The Y(1)-F(11) bond length is 2.21 Å. The Y(1)-F(3) bond length is 2.25 Å. The Y(1)-F(5) bond length is 2.16 Å. The Y(1)-F(7) bond length is 2.11 Å. The Y(1)-F(9) bond length is 2.24 Å. There is one shorter (2.32 Å) and one longer (2.75 Å) Y(1)-F(10) bond length. There are two inequivalent V sites. In the first V site, V(1) is bonded to one F(1), one F(2), one F(3), one F(4), one F(6), and one F(9) atom to form a mixture of corner and edge-sharing VF6 octahedra. The corner-sharing octahedral tilt angles are 63°. The V(1)-F(1) bond length is 2.10 Å. The V(1)-F(2) bond length is 2.11 Å. The V(1)-F(3) bond length is 2.21 Å. The V(1)-F(4) bond length is 2.08 Å. The V(1)-F(6) bond length is 2.10 Å. The V(1)-F(9) bond length is 2.25 Å. In the second V site, V(2) is bonded to one F(1), one F(10), one F(11), one F(6), one F(8), and one F(9) atom to form a mixture of corner and edge-sharing VF6 octahedra. The corner-sharing octahedral tilt angles are 63°. The V(2)-F(1) bond length is 2.08 Å. The V(2)-F(10) bond length is 2.17 Å. The V(2)-F(11) bond length is 2.17 Å. The V(2)-F(6) bond length is 2.11 Å. The V(2)-F(8) bond length is 2.12 Å. The V(2)-F(9) bond length is 2.16 Å. There are eleven inequivalent F sites. In the first F site, F(10) is bonded in a distorted water-like geometry to two equivalent Y(1) and one V(2) atom. In the second F site, F(11) is bonded in a distorted trigonal planar geometry to one Ba(1), one Y(1), and one V(2) atom. In the third F site, F(1) is bonded in a distorted water-like geometry to one Ba(1), one Ba(2), one V(1), and one V(2) atom. In the fourth F site, F(2) is bonded in a 3-coordinate geometry to one Ba(1), one Ba(2), and one V(1) atom. In the fifth F site, F(3) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), one Y(1), and one V(1) atom. In the sixth F site, F(4) is bonded in a 3-coordinate geometry to two equivalent Ba(1) and one V(1) atom. In the seventh F site, F(5) is bonded in a distorted trigonal non-coplanar geometry to one Ba(1), one Ba(2), and one Y(1) atom. In the eighth F site, F(6) is bonded in a distorted bent 120 degrees geometry to one Ba(1), one V(1), and one V(2) atom. In the ninth F site, F(7) is bonded in a 2-coordinate geometry to one Ba(1), one Ba(2), and one Y(1) atom. In the tenth F site, F(8) is bonded to one Ba(1), two equivalent Ba(2), and one V(2) atom to form distorted FBa3V tetrahedra that share  a cornercorner with one F(9)BaYV2 tetrahedra, corners with two equivalent F(8)Ba3V tetrahedra, and  an edgeedge with one F(9)BaYV2 tetrahedra. In the eleventh F site, F(9) is bonded to one Ba(2), one Y(1), one V(1), and one V(2) atom to form a mixture of distorted corner and edge-sharing FBaYV2 tetrahedra.