CaU2(PO2)2 crystallizes in the tetragonal I4/mmm space group. Ca(1) is bonded in a linear geometry to two equivalent O(2) atoms. U(1) is bonded in a linear geometry to four equivalent P(1), one O(1), and one O(2) atom. P(1) is bonded in a rectangular see-saw-like geometry to four equivalent U(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one U(1) atom. In the second O site, O(2) is bonded in a linear geometry to one Ca(1) and one U(1) atom.
CaU2(PO2)2 crystallizes in the tetragonal I4/mmm space group. Ca(1) is bonded in a linear geometry to two equivalent O(2) atoms. Both Ca(1)-O(2) bond lengths are 2.12 Å. U(1) is bonded in a linear geometry to four equivalent P(1), one O(1), and one O(2) atom. All U(1)-P(1) bond lengths are 2.85 Å. The U(1)-O(1) bond length is 1.83 Å. The U(1)-O(2) bond length is 1.91 Å. P(1) is bonded in a rectangular see-saw-like geometry to four equivalent U(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one U(1) atom. In the second O site, O(2) is bonded in a linear geometry to one Ca(1) and one U(1) atom.