V2Pb2Se2O11 crystallizes in the triclinic P-1 space group. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to one O(4), one O(6), one O(7), one O(8), and two equivalent O(11) atoms. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(10), one O(11), one O(3), one O(4), one O(8), and one O(9) atom. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(5), one O(8), and one O(9) atom. In the second Pb site, Pb(2) is bonded in a 4-coordinate geometry to one O(1), one O(10), one O(2), and one O(9) atom. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. In the second Se site, Se(2) is bonded in a trigonal non-coplanar geometry to one O(4), one O(5), and one O(6) atom. There are eleven inequivalent O sites. In the first O site, O(11) is bonded in a distorted trigonal non-coplanar geometry to one V(2) and two equivalent V(1) atoms. In the second O site, O(1) is bonded in a distorted single-bond geometry to one Pb(2) and one Se(1) atom. In the third O site, O(2) is bonded in a 3-coordinate geometry to one Pb(1), one Pb(2), and one Se(1) atom. In the fourth O site, O(3) is bonded in a distorted trigonal planar geometry to one V(2), one Pb(1), and one Se(1) atom. In the fifth O site, O(4) is bonded in a 3-coordinate geometry to one V(1), one V(2), and one Se(2) atom. In the sixth O site, O(5) is bonded in a 2-coordinate geometry to one Pb(1) and one Se(2) atom. In the seventh O site, O(6) is bonded in a bent 120 degrees geometry to one V(1) and one Se(2) atom. In the eighth O site, O(7) is bonded in a single-bond geometry to one V(1) atom. In the ninth O site, O(8) is bonded in a 3-coordinate geometry to one V(1), one V(2), and one Pb(1) atom. In the tenth O site, O(9) is bonded in a distorted single-bond geometry to one V(2), one Pb(1), and one Pb(2) atom. In the eleventh O site, O(10) is bonded in a single-bond geometry to one V(2) and one Pb(2) atom.
V2Pb2Se2O11 crystallizes in the triclinic P-1 space group. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to one O(4), one O(6), one O(7), one O(8), and two equivalent O(11) atoms. The V(1)-O(4) bond length is 2.18 Å. The V(1)-O(6) bond length is 2.00 Å. The V(1)-O(7) bond length is 1.65 Å. The V(1)-O(8) bond length is 1.77 Å. There is one shorter (1.90 Å) and one longer (2.34 Å) V(1)-O(11) bond length. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(10), one O(11), one O(3), one O(4), one O(8), and one O(9) atom. The V(2)-O(10) bond length is 1.68 Å. The V(2)-O(11) bond length is 1.89 Å. The V(2)-O(3) bond length is 1.99 Å. The V(2)-O(4) bond length is 2.42 Å. The V(2)-O(8) bond length is 2.11 Å. The V(2)-O(9) bond length is 1.73 Å. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(5), one O(8), and one O(9) atom. The Pb(1)-O(2) bond length is 2.64 Å. The Pb(1)-O(3) bond length is 2.57 Å. The Pb(1)-O(5) bond length is 2.49 Å. The Pb(1)-O(8) bond length is 2.62 Å. The Pb(1)-O(9) bond length is 2.54 Å. In the second Pb site, Pb(2) is bonded in a 4-coordinate geometry to one O(1), one O(10), one O(2), and one O(9) atom. The Pb(2)-O(1) bond length is 2.62 Å. The Pb(2)-O(10) bond length is 2.68 Å. The Pb(2)-O(2) bond length is 2.38 Å. The Pb(2)-O(9) bond length is 2.46 Å. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. The Se(1)-O(1) bond length is 1.72 Å. The Se(1)-O(2) bond length is 1.75 Å. The Se(1)-O(3) bond length is 1.79 Å. In the second Se site, Se(2) is bonded in a trigonal non-coplanar geometry to one O(4), one O(5), and one O(6) atom. The Se(2)-O(4) bond length is 1.76 Å. The Se(2)-O(5) bond length is 1.71 Å. The Se(2)-O(6) bond length is 1.77 Å. There are eleven inequivalent O sites. In the first O site, O(11) is bonded in a distorted trigonal non-coplanar geometry to one V(2) and two equivalent V(1) atoms. In the second O site, O(1) is bonded in a distorted single-bond geometry to one Pb(2) and one Se(1) atom. In the third O site, O(2) is bonded in a 3-coordinate geometry to one Pb(1), one Pb(2), and one Se(1) atom. In the fourth O site, O(3) is bonded in a distorted trigonal planar geometry to one V(2), one Pb(1), and one Se(1) atom. In the fifth O site, O(4) is bonded in a 3-coordinate geometry to one V(1), one V(2), and one Se(2) atom. In the sixth O site, O(5) is bonded in a 2-coordinate geometry to one Pb(1) and one Se(2) atom. In the seventh O site, O(6) is bonded in a bent 120 degrees geometry to one V(1) and one Se(2) atom. In the eighth O site, O(7) is bonded in a single-bond geometry to one V(1) atom. In the ninth O site, O(8) is bonded in a 3-coordinate geometry to one V(1), one V(2), and one Pb(1) atom. In the tenth O site, O(9) is bonded in a distorted single-bond geometry to one V(2), one Pb(1), and one Pb(2) atom. In the eleventh O site, O(10) is bonded in a single-bond geometry to one V(2) and one Pb(2) atom.