RbUCrNO9 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 8-coordinate geometry to one O(1), one O(3), one O(4), one O(7), one O(8), one O(9), and two equivalent O(2) atoms. U(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), and one O(8) atom. Cr(1) is bonded in a tetrahedral geometry to one O(1), one O(5), one O(6), and one O(7) atom. N(1) is bonded in a trigonal planar geometry to one O(4), one O(8), and one O(9) atom. There are nine inequivalent O sites. In the first O site, O(5) is bonded in a distorted bent 150 degrees geometry to one U(1) and one Cr(1) atom. In the second O site, O(6) is bonded in a distorted bent 150 degrees geometry to one U(1) and one Cr(1) atom. In the third O site, O(7) is bonded in a distorted single-bond geometry to one Rb(1) and one Cr(1) atom. In the fourth O site, O(8) is bonded in a 3-coordinate geometry to one Rb(1), one U(1), and one N(1) atom. In the fifth O site, O(1) is bonded in a 2-coordinate geometry to one Rb(1), one U(1), and one Cr(1) atom. In the sixth O site, O(9) is bonded in a distorted single-bond geometry to one Rb(1) and one N(1) atom. In the seventh O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one U(1) atom. In the eighth O site, O(3) is bonded in a distorted single-bond geometry to one Rb(1) and one U(1) atom. In the ninth O site, O(4) is bonded in a distorted single-bond geometry to one Rb(1), one U(1), and one N(1) atom.
RbUCrNO9 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 8-coordinate geometry to one O(1), one O(3), one O(4), one O(7), one O(8), one O(9), and two equivalent O(2) atoms. The Rb(1)-O(1) bond length is 3.20 Å. The Rb(1)-O(3) bond length is 3.04 Å. The Rb(1)-O(4) bond length is 3.30 Å. The Rb(1)-O(7) bond length is 2.96 Å. The Rb(1)-O(8) bond length is 3.04 Å. The Rb(1)-O(9) bond length is 3.11 Å. There is one shorter (3.01 Å) and one longer (3.27 Å) Rb(1)-O(2) bond length. U(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), and one O(8) atom. The U(1)-O(1) bond length is 2.30 Å. The U(1)-O(2) bond length is 1.82 Å. The U(1)-O(3) bond length is 1.81 Å. The U(1)-O(4) bond length is 2.58 Å. The U(1)-O(5) bond length is 2.33 Å. The U(1)-O(6) bond length is 2.30 Å. The U(1)-O(8) bond length is 2.52 Å. Cr(1) is bonded in a tetrahedral geometry to one O(1), one O(5), one O(6), and one O(7) atom. The Cr(1)-O(1) bond length is 1.69 Å. The Cr(1)-O(5) bond length is 1.69 Å. The Cr(1)-O(6) bond length is 1.68 Å. The Cr(1)-O(7) bond length is 1.61 Å. N(1) is bonded in a trigonal planar geometry to one O(4), one O(8), and one O(9) atom. The N(1)-O(4) bond length is 1.29 Å. The N(1)-O(8) bond length is 1.29 Å. The N(1)-O(9) bond length is 1.23 Å. There are nine inequivalent O sites. In the first O site, O(5) is bonded in a distorted bent 150 degrees geometry to one U(1) and one Cr(1) atom. In the second O site, O(6) is bonded in a distorted bent 150 degrees geometry to one U(1) and one Cr(1) atom. In the third O site, O(7) is bonded in a distorted single-bond geometry to one Rb(1) and one Cr(1) atom. In the fourth O site, O(8) is bonded in a 3-coordinate geometry to one Rb(1), one U(1), and one N(1) atom. In the fifth O site, O(1) is bonded in a 2-coordinate geometry to one Rb(1), one U(1), and one Cr(1) atom. In the sixth O site, O(9) is bonded in a distorted single-bond geometry to one Rb(1) and one N(1) atom. In the seventh O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one U(1) atom. In the eighth O site, O(3) is bonded in a distorted single-bond geometry to one Rb(1) and one U(1) atom. In the ninth O site, O(4) is bonded in a distorted single-bond geometry to one Rb(1), one U(1), and one N(1) atom.