BaRe3Se4O7 crystallizes in the triclinic P-1 space group. Ba(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(7), and two equivalent O(1) atoms. There are three inequivalent Re sites. In the first Re site, Re(1) is bonded in a distorted single-bond geometry to one Se(1), one Se(2), one Se(4), and one O(1) atom. In the second Re site, Re(2) is bonded in a distorted single-bond geometry to one Se(1), one Se(2), one Se(4), and one O(2) atom. In the third Re site, Re(3) is bonded in a distorted single-bond geometry to one Se(1), one Se(2), one Se(4), and one O(3) atom. There are four inequivalent Se sites. In the first Se site, Se(1) is bonded in a 3-coordinate geometry to one Re(1), one Re(2), and one Re(3) atom. In the second Se site, Se(2) is bonded in a 3-coordinate geometry to one Re(1), one Re(2), and one Re(3) atom. In the third Se site, Se(3) is bonded in a distorted single-bond geometry to one O(4) atom. In the fourth Se site, Se(4) is bonded in a 4-coordinate geometry to one Re(1), one Re(2), one Re(3), and one O(5) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Ba(1) and one Re(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Ba(1) and one Re(2) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Ba(1) and one Re(3) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Ba(1) and one Se(3) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to one Ba(1), one Se(4), and one O(5) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one O(7) atom. In the seventh O site, O(7) is bonded in a water-like geometry to one Ba(1) and one O(6) atom.
BaRe3Se4O7 crystallizes in the triclinic P-1 space group. Ba(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(7), and two equivalent O(1) atoms. The Ba(1)-O(2) bond length is 2.81 Å. The Ba(1)-O(3) bond length is 2.84 Å. The Ba(1)-O(4) bond length is 2.58 Å. The Ba(1)-O(5) bond length is 2.64 Å. The Ba(1)-O(7) bond length is 3.01 Å. There is one shorter (2.78 Å) and one longer (2.92 Å) Ba(1)-O(1) bond length. There are three inequivalent Re sites. In the first Re site, Re(1) is bonded in a distorted single-bond geometry to one Se(1), one Se(2), one Se(4), and one O(1) atom. The Re(1)-Se(1) bond length is 2.54 Å. The Re(1)-Se(2) bond length is 2.64 Å. The Re(1)-Se(4) bond length is 2.47 Å. The Re(1)-O(1) bond length is 1.84 Å. In the second Re site, Re(2) is bonded in a distorted single-bond geometry to one Se(1), one Se(2), one Se(4), and one O(2) atom. The Re(2)-Se(1) bond length is 2.53 Å. The Re(2)-Se(2) bond length is 2.50 Å. The Re(2)-Se(4) bond length is 2.52 Å. The Re(2)-O(2) bond length is 1.76 Å. In the third Re site, Re(3) is bonded in a distorted single-bond geometry to one Se(1), one Se(2), one Se(4), and one O(3) atom. The Re(3)-Se(1) bond length is 2.52 Å. The Re(3)-Se(2) bond length is 2.52 Å. The Re(3)-Se(4) bond length is 2.62 Å. The Re(3)-O(3) bond length is 1.78 Å. There are four inequivalent Se sites. In the first Se site, Se(1) is bonded in a 3-coordinate geometry to one Re(1), one Re(2), and one Re(3) atom. In the second Se site, Se(2) is bonded in a 3-coordinate geometry to one Re(1), one Re(2), and one Re(3) atom. In the third Se site, Se(3) is bonded in a distorted single-bond geometry to one O(4) atom. The Se(3)-O(4) bond length is 1.73 Å. In the fourth Se site, Se(4) is bonded in a 4-coordinate geometry to one Re(1), one Re(2), one Re(3), and one O(5) atom. The Se(4)-O(5) bond length is 2.37 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Ba(1) and one Re(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Ba(1) and one Re(2) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Ba(1) and one Re(3) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Ba(1) and one Se(3) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to one Ba(1), one Se(4), and one O(5) atom. The O(5)-O(5) bond length is 1.37 Å. In the sixth O site, O(6) is bonded in a single-bond geometry to one O(7) atom. The O(6)-O(7) bond length is 1.26 Å. In the seventh O site, O(7) is bonded in a water-like geometry to one Ba(1) and one O(6) atom.