K2U(OBr)4 crystallizes in the triclinic P-1 space group. K(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), one Br(2), and three equivalent Br(1) atoms. U(1) is bonded in a distorted linear geometry to two equivalent O(1), two equivalent Br(1), and two equivalent Br(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent K(1) and one U(1) atom. In the second O site, O(2) is bonded in a 1-coordinate geometry to two equivalent K(1) and one O(2) atom. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a distorted see-saw-like geometry to three equivalent K(1) and one U(1) atom. In the second Br site, Br(2) is bonded in a water-like geometry to one K(1) and one U(1) atom.
K2U(OBr)4 crystallizes in the triclinic P-1 space group. K(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), one Br(2), and three equivalent Br(1) atoms. There is one shorter (2.82 Å) and one longer (2.88 Å) K(1)-O(1) bond length. There is one shorter (3.31 Å) and one longer (3.41 Å) K(1)-O(2) bond length. The K(1)-Br(2) bond length is 3.37 Å. There are a spread of K(1)-Br(1) bond distances ranging from 3.28-3.61 Å. U(1) is bonded in a distorted linear geometry to two equivalent O(1), two equivalent Br(1), and two equivalent Br(2) atoms. Both U(1)-O(1) bond lengths are 1.83 Å. Both U(1)-Br(1) bond lengths are 2.83 Å. Both U(1)-Br(2) bond lengths are 2.82 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent K(1) and one U(1) atom. In the second O site, O(2) is bonded in a 1-coordinate geometry to two equivalent K(1) and one O(2) atom. The O(2)-O(2) bond length is 1.24 Å. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a distorted see-saw-like geometry to three equivalent K(1) and one U(1) atom. In the second Br site, Br(2) is bonded in a water-like geometry to one K(1) and one U(1) atom.