CsU2H3(C2O7)2 crystallizes in the monoclinic P2_1/m space group. Cs(1) is bonded in a 9-coordinate geometry to one O(8), two equivalent O(1), two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms. U(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form distorted corner-sharing UO7 pentagonal bipyramids. There are two inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(7) atom. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one O(4) and one O(6) atom. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(8) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(5) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Cs(1), one U(1), and one C(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Cs(1) and one U(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one U(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Cs(1), one U(1), and one C(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to two equivalent U(1) and one H(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Cs(1), one U(1), and one C(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one U(1) and one C(1) atom. In the eighth O site, O(8) is bonded in a water-like geometry to one Cs(1) and two equivalent H(1) atoms.
CsU2H3(C2O7)2 crystallizes in the monoclinic P2_1/m space group. Cs(1) is bonded in a 9-coordinate geometry to one O(8), two equivalent O(1), two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms. The Cs(1)-O(8) bond length is 3.15 Å. Both Cs(1)-O(1) bond lengths are 3.34 Å. Both Cs(1)-O(2) bond lengths are 3.37 Å. Both Cs(1)-O(4) bond lengths are 3.13 Å. Both Cs(1)-O(6) bond lengths are 3.59 Å. U(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form distorted corner-sharing UO7 pentagonal bipyramids. The U(1)-O(1) bond length is 2.48 Å. The U(1)-O(2) bond length is 1.80 Å. The U(1)-O(3) bond length is 1.81 Å. The U(1)-O(4) bond length is 2.47 Å. The U(1)-O(5) bond length is 2.34 Å. The U(1)-O(6) bond length is 2.45 Å. The U(1)-O(7) bond length is 2.45 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(7) atom. The C(1)-O(1) bond length is 1.26 Å. The C(1)-O(7) bond length is 1.27 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one O(4) and one O(6) atom. The C(2)-O(4) bond length is 1.26 Å. The C(2)-O(6) bond length is 1.26 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(8) atom. The H(1)-O(8) bond length is 0.98 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(5) atom. The H(2)-O(5) bond length is 0.97 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Cs(1), one U(1), and one C(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Cs(1) and one U(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one U(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Cs(1), one U(1), and one C(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to two equivalent U(1) and one H(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Cs(1), one U(1), and one C(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one U(1) and one C(1) atom. In the eighth O site, O(8) is bonded in a water-like geometry to one Cs(1) and two equivalent H(1) atoms.