CsU2(PO4)4 crystallizes in the monoclinic C2/c space group. Cs(1) is bonded in a 8-coordinate geometry to four equivalent O(7) and four equivalent O(8) atoms. U(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(5), one O(6), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded in a tetrahedral geometry to one O(1), one O(3), one O(4), and one O(5) atom. In the second P site, P(2) is bonded in a tetrahedral geometry to one O(2), one O(6), one O(7), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(2) is bonded in a distorted bent 150 degrees geometry to one U(1) and one P(2) atom. In the second O site, O(3) is bonded in a distorted single-bond geometry to two equivalent U(1) and one P(1) atom. In the third O site, O(4) is bonded in a distorted single-bond geometry to two equivalent U(1) and one P(1) atom. In the fourth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one U(1) and one P(1) atom. In the fifth O site, O(6) is bonded in a bent 150 degrees geometry to one U(1) and one P(2) atom. In the sixth O site, O(7) is bonded in a distorted single-bond geometry to two equivalent Cs(1) and one P(2) atom. In the seventh O site, O(8) is bonded in a single-bond geometry to two equivalent Cs(1) and one P(2) atom. In the eighth O site, O(1) is bonded in a distorted bent 150 degrees geometry to one U(1) and one P(1) atom.
CsU2(PO4)4 crystallizes in the monoclinic C2/c space group. Cs(1) is bonded in a 8-coordinate geometry to four equivalent O(7) and four equivalent O(8) atoms. There are two shorter (3.08 Å) and two longer (3.09 Å) Cs(1)-O(7) bond lengths. There are two shorter (3.49 Å) and two longer (3.54 Å) Cs(1)-O(8) bond lengths. U(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(5), one O(6), two equivalent O(3), and two equivalent O(4) atoms. The U(1)-O(1) bond length is 2.21 Å. The U(1)-O(2) bond length is 2.04 Å. The U(1)-O(5) bond length is 2.19 Å. The U(1)-O(6) bond length is 2.06 Å. There is one shorter (2.40 Å) and one longer (2.54 Å) U(1)-O(3) bond length. There is one shorter (2.39 Å) and one longer (2.68 Å) U(1)-O(4) bond length. There are two inequivalent P sites. In the first P site, P(1) is bonded in a tetrahedral geometry to one O(1), one O(3), one O(4), and one O(5) atom. The P(1)-O(1) bond length is 1.55 Å. The P(1)-O(3) bond length is 1.57 Å. The P(1)-O(4) bond length is 1.54 Å. The P(1)-O(5) bond length is 1.54 Å. In the second P site, P(2) is bonded in a tetrahedral geometry to one O(2), one O(6), one O(7), and one O(8) atom. The P(2)-O(2) bond length is 1.65 Å. The P(2)-O(6) bond length is 1.66 Å. The P(2)-O(7) bond length is 1.49 Å. The P(2)-O(8) bond length is 1.49 Å. There are eight inequivalent O sites. In the first O site, O(2) is bonded in a distorted bent 150 degrees geometry to one U(1) and one P(2) atom. In the second O site, O(3) is bonded in a distorted single-bond geometry to two equivalent U(1) and one P(1) atom. In the third O site, O(4) is bonded in a distorted single-bond geometry to two equivalent U(1) and one P(1) atom. In the fourth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one U(1) and one P(1) atom. In the fifth O site, O(6) is bonded in a bent 150 degrees geometry to one U(1) and one P(2) atom. In the sixth O site, O(7) is bonded in a distorted single-bond geometry to two equivalent Cs(1) and one P(2) atom. In the seventh O site, O(8) is bonded in a single-bond geometry to two equivalent Cs(1) and one P(2) atom. In the eighth O site, O(1) is bonded in a distorted bent 150 degrees geometry to one U(1) and one P(1) atom.