RbTh2(PO4)3 crystallizes in the monoclinic C2/c space group. Rb(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(5), and four equivalent O(2) atoms. Th(1) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) 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(6) atom. In the second P site, P(2) is bonded in a tetrahedral geometry to two equivalent O(2) and two equivalent O(5) atoms. There are six inequivalent O sites. In the first O site, O(6) is bonded in a distorted single-bond geometry to two equivalent Th(1) and one P(1) atom. In the second O site, O(1) is bonded in a 3-coordinate geometry to one Rb(1), one Th(1), and one P(1) atom. In the third O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Rb(1), one Th(1), and one P(2) atom. In the fourth O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Th(1) and one P(1) atom. In the fifth O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Th(1) and one P(1) atom. In the sixth O site, O(5) is bonded in a distorted single-bond geometry to one Rb(1), two equivalent Th(1), and one P(2) atom.
RbTh2(PO4)3 crystallizes in the monoclinic C2/c space group. Rb(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(5), and four equivalent O(2) atoms. Both Rb(1)-O(1) bond lengths are 2.89 Å. Both Rb(1)-O(5) bond lengths are 2.91 Å. There are two shorter (2.94 Å) and two longer (3.24 Å) Rb(1)-O(2) bond lengths. Th(1) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms. The Th(1)-O(1) bond length is 2.40 Å. The Th(1)-O(2) bond length is 2.44 Å. The Th(1)-O(3) bond length is 2.36 Å. There is one shorter (2.50 Å) and one longer (2.52 Å) Th(1)-O(4) bond length. There is one shorter (2.55 Å) and one longer (2.67 Å) Th(1)-O(5) bond length. Both Th(1)-O(6) bond lengths are 2.51 Å. 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(6) atom. The P(1)-O(1) bond length is 1.54 Å. The P(1)-O(3) bond length is 1.53 Å. The P(1)-O(4) bond length is 1.58 Å. The P(1)-O(6) bond length is 1.57 Å. In the second P site, P(2) is bonded in a tetrahedral geometry to two equivalent O(2) and two equivalent O(5) atoms. Both P(2)-O(2) bond lengths are 1.55 Å. Both P(2)-O(5) bond lengths are 1.56 Å. There are six inequivalent O sites. In the first O site, O(6) is bonded in a distorted single-bond geometry to two equivalent Th(1) and one P(1) atom. In the second O site, O(1) is bonded in a 3-coordinate geometry to one Rb(1), one Th(1), and one P(1) atom. In the third O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Rb(1), one Th(1), and one P(2) atom. In the fourth O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Th(1) and one P(1) atom. In the fifth O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Th(1) and one P(1) atom. In the sixth O site, O(5) is bonded in a distorted single-bond geometry to one Rb(1), two equivalent Th(1), and one P(2) atom.