ThMo2O9 crystallizes in the monoclinic P2_1/c space group. Th(1) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a tetrahedral geometry to one O(4), one O(5), one O(6), and one O(9) atom. In the second Mo site, Mo(2) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(8) atom. There are nine inequivalent O sites. In the first O site, O(6) is bonded in a distorted linear geometry to one Th(1) and one Mo(1) atom. In the second O site, O(7) is bonded in a single-bond geometry to one Th(1) atom. In the third O site, O(8) is bonded in a distorted linear geometry to one Th(1) and one Mo(2) atom. In the fourth O site, O(1) is bonded in a bent 150 degrees geometry to one Th(1) and one Mo(2) atom. In the fifth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Th(1) and one Mo(1) atom. In the sixth O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Th(1) and one Mo(2) atom. In the seventh O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Th(1) and one Mo(2) atom. In the eighth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Th(1) and one Mo(1) atom. In the ninth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Th(1) and one Mo(1) atom.
ThMo2O9 crystallizes in the monoclinic P2_1/c space group. Th(1) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. The Th(1)-O(1) bond length is 2.44 Å. The Th(1)-O(2) bond length is 2.40 Å. The Th(1)-O(3) bond length is 2.41 Å. The Th(1)-O(4) bond length is 2.44 Å. The Th(1)-O(5) bond length is 2.47 Å. The Th(1)-O(6) bond length is 2.48 Å. The Th(1)-O(7) bond length is 2.47 Å. The Th(1)-O(8) bond length is 2.46 Å. The Th(1)-O(9) bond length is 2.51 Å. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a tetrahedral geometry to one O(4), one O(5), one O(6), and one O(9) atom. The Mo(1)-O(4) bond length is 1.80 Å. The Mo(1)-O(5) bond length is 1.78 Å. The Mo(1)-O(6) bond length is 1.81 Å. The Mo(1)-O(9) bond length is 1.80 Å. In the second Mo site, Mo(2) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(8) atom. The Mo(2)-O(1) bond length is 1.79 Å. The Mo(2)-O(2) bond length is 1.79 Å. The Mo(2)-O(3) bond length is 1.81 Å. The Mo(2)-O(8) bond length is 1.79 Å. There are nine inequivalent O sites. In the first O site, O(6) is bonded in a distorted linear geometry to one Th(1) and one Mo(1) atom. In the second O site, O(7) is bonded in a single-bond geometry to one Th(1) atom. In the third O site, O(8) is bonded in a distorted linear geometry to one Th(1) and one Mo(2) atom. In the fourth O site, O(1) is bonded in a bent 150 degrees geometry to one Th(1) and one Mo(2) atom. In the fifth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Th(1) and one Mo(1) atom. In the sixth O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Th(1) and one Mo(2) atom. In the seventh O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Th(1) and one Mo(2) atom. In the eighth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Th(1) and one Mo(1) atom. In the ninth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Th(1) and one Mo(1) atom.