Lu2Mo4O15 crystallizes in the monoclinic P2_1/c space group. Lu(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form LuO7 pentagonal bipyramids that share corners with two equivalent Mo(2)O5 tetrahedra, corners with four equivalent Mo(1)O4 tetrahedra, and  an edgeedge with one Mo(2)O5 tetrahedra. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(2), one O(3), one O(5), and one O(8) atom to form MoO4 tetrahedra that share corners with four equivalent Lu(1)O7 pentagonal bipyramids and  a cornercorner with one Mo(2)O5 tetrahedra. In the second Mo site, Mo(2) is bonded to one O(1), one O(4), one O(6), one O(7), and one O(8) atom to form distorted MoO5 tetrahedra that share corners with two equivalent Lu(1)O7 pentagonal bipyramids,  a cornercorner with one Mo(1)O4 tetrahedra,  a cornercorner with one Mo(2)O5 tetrahedra, and  an edgeedge with one Lu(1)O7 pentagonal bipyramid. There are eight inequivalent O sites. In the first O site, O(7) is bonded in a distorted linear geometry to one Lu(1) and one Mo(2) atom. In the second O site, O(8) is bonded in a 3-coordinate geometry to one Lu(1), one Mo(1), and one Mo(2) atom. In the third O site, O(1) is bonded in a bent 150 degrees geometry to one Lu(1) and one Mo(2) atom. In the fourth O site, O(2) is bonded in a linear geometry to one Lu(1) and one Mo(1) atom. In the fifth O site, O(3) is bonded in a bent 150 degrees geometry to one Lu(1) and one Mo(1) atom. In the sixth O site, O(4) is bonded in a linear geometry to two equivalent Mo(2) atoms. In the seventh O site, O(5) is bonded in a bent 150 degrees geometry to one Lu(1) and one Mo(1) atom. In the eighth O site, O(6) is bonded in a bent 120 degrees geometry to one Lu(1) and one Mo(2) atom.
Lu2Mo4O15 crystallizes in the monoclinic P2_1/c space group. Lu(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form LuO7 pentagonal bipyramids that share corners with two equivalent Mo(2)O5 tetrahedra, corners with four equivalent Mo(1)O4 tetrahedra, and  an edgeedge with one Mo(2)O5 tetrahedra. The Lu(1)-O(1) bond length is 2.26 Å. The Lu(1)-O(2) bond length is 2.23 Å. The Lu(1)-O(3) bond length is 2.21 Å. The Lu(1)-O(5) bond length is 2.24 Å. The Lu(1)-O(6) bond length is 2.33 Å. The Lu(1)-O(7) bond length is 2.32 Å. The Lu(1)-O(8) bond length is 2.29 Å. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(2), one O(3), one O(5), and one O(8) atom to form MoO4 tetrahedra that share corners with four equivalent Lu(1)O7 pentagonal bipyramids and  a cornercorner with one Mo(2)O5 tetrahedra. The Mo(1)-O(2) bond length is 1.78 Å. The Mo(1)-O(3) bond length is 1.79 Å. The Mo(1)-O(5) bond length is 1.79 Å. The Mo(1)-O(8) bond length is 1.82 Å. In the second Mo site, Mo(2) is bonded to one O(1), one O(4), one O(6), one O(7), and one O(8) atom to form distorted MoO5 tetrahedra that share corners with two equivalent Lu(1)O7 pentagonal bipyramids,  a cornercorner with one Mo(1)O4 tetrahedra,  a cornercorner with one Mo(2)O5 tetrahedra, and  an edgeedge with one Lu(1)O7 pentagonal bipyramid. The Mo(2)-O(1) bond length is 1.77 Å. The Mo(2)-O(4) bond length is 1.90 Å. The Mo(2)-O(6) bond length is 1.78 Å. The Mo(2)-O(7) bond length is 1.77 Å. The Mo(2)-O(8) bond length is 2.54 Å. There are eight inequivalent O sites. In the first O site, O(7) is bonded in a distorted linear geometry to one Lu(1) and one Mo(2) atom. In the second O site, O(8) is bonded in a 3-coordinate geometry to one Lu(1), one Mo(1), and one Mo(2) atom. In the third O site, O(1) is bonded in a bent 150 degrees geometry to one Lu(1) and one Mo(2) atom. In the fourth O site, O(2) is bonded in a linear geometry to one Lu(1) and one Mo(1) atom. In the fifth O site, O(3) is bonded in a bent 150 degrees geometry to one Lu(1) and one Mo(1) atom. In the sixth O site, O(4) is bonded in a linear geometry to two equivalent Mo(2) atoms. In the seventh O site, O(5) is bonded in a bent 150 degrees geometry to one Lu(1) and one Mo(1) atom. In the eighth O site, O(6) is bonded in a bent 120 degrees geometry to one Lu(1) and one Mo(2) atom.