Mo12Cd3(P4O25)2 crystallizes in the triclinic P-1 space group. There are six inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(16), one O(19), one O(22), one O(8), and one O(9) atom to form distorted MoO5 square pyramids that share  a cornercorner with one Cd(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra,  an edgeedge with one Mo(4)O5 square pyramid, and  an edgeedge with one Mo(5)O5 square pyramid. The corner-sharing octahedral tilt angles are 46°. The Mo(1)-O(16) bond length is 1.94 Å. The Mo(1)-O(19) bond length is 2.11 Å. The Mo(1)-O(22) bond length is 1.98 Å. The Mo(1)-O(8) bond length is 2.29 Å. The Mo(1)-O(9) bond length is 2.04 Å. In the second Mo site, Mo(2) is bonded to one O(11), one O(15), one O(18), one O(20), and one O(24) atom to form distorted MoO5 square pyramids that share  a cornercorner with one Cd(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  an edgeedge with one Mo(4)O5 square pyramid, and  an edgeedge with one Mo(6)O5 square pyramid. The corner-sharing octahedral tilt angles are 48°. The Mo(2)-O(11) bond length is 1.97 Å. The Mo(2)-O(15) bond length is 2.04 Å. The Mo(2)-O(18) bond length is 2.12 Å. The Mo(2)-O(20) bond length is 2.24 Å. The Mo(2)-O(24) bond length is 1.93 Å. In the third Mo site, Mo(3) is bonded to one O(12), one O(17), one O(21), one O(23), and one O(7) atom to form distorted MoO5 square pyramids that share  a cornercorner with one Cd(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  an edgeedge with one Mo(5)O5 square pyramid, and  an edgeedge with one Mo(6)O5 square pyramid. The corner-sharing octahedral tilt angles are 47°. The Mo(3)-O(12) bond length is 2.29 Å. The Mo(3)-O(17) bond length is 2.13 Å. The Mo(3)-O(21) bond length is 1.96 Å. The Mo(3)-O(23) bond length is 1.94 Å. The Mo(3)-O(7) bond length is 2.03 Å. In the fourth Mo site, Mo(4) is bonded to one O(13), one O(16), one O(18), one O(20), and one O(22) atom to form distorted MoO5 square pyramids that share  a cornercorner with one Cd(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  an edgeedge with one Mo(1)O5 square pyramid, and  an edgeedge with one Mo(2)O5 square pyramid. The corner-sharing octahedral tilt angles are 47°. The Mo(4)-O(13) bond length is 2.06 Å. The Mo(4)-O(16) bond length is 1.92 Å. The Mo(4)-O(18) bond length is 2.14 Å. The Mo(4)-O(20) bond length is 2.28 Å. The Mo(4)-O(22) bond length is 1.96 Å. In the fifth Mo site, Mo(5) is bonded to one O(14), one O(19), one O(21), one O(23), and one O(8) atom to form distorted MoO5 square pyramids that share  a cornercorner with one Cd(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra,  an edgeedge with one Mo(1)O5 square pyramid, and  an edgeedge with one Mo(3)O5 square pyramid. The corner-sharing octahedral tilt angles are 46°. The Mo(5)-O(14) bond length is 2.04 Å. The Mo(5)-O(19) bond length is 2.10 Å. The Mo(5)-O(21) bond length is 1.97 Å. The Mo(5)-O(23) bond length is 1.94 Å. The Mo(5)-O(8) bond length is 2.29 Å. In the sixth Mo site, Mo(6) is bonded to one O(11), one O(12), one O(17), one O(24), and one O(3) atom to form distorted MoO5 square pyramids that share  a cornercorner with one Cd(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  an edgeedge with one Mo(2)O5 square pyramid, and  an edgeedge with one Mo(3)O5 square pyramid. The corner-sharing octahedral tilt angles are 48°. The Mo(6)-O(11) bond length is 1.96 Å. The Mo(6)-O(12) bond length is 2.25 Å. The Mo(6)-O(17) bond length is 2.12 Å. The Mo(6)-O(24) bond length is 1.92 Å. The Mo(6)-O(3) bond length is 2.05 Å. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one O(1), one O(2), one O(4), one O(5), and one O(6) atom to form distorted CdO5 square pyramids that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. The Cd(1)-O(1) bond length is 2.27 Å. The Cd(1)-O(2) bond length is 2.23 Å. The Cd(1)-O(4) bond length is 2.25 Å. The Cd(1)-O(5) bond length is 2.24 Å. The Cd(1)-O(6) bond length is 2.47 Å. In the second Cd site, Cd(2) is bonded to two equivalent O(11), two equivalent O(21), and two equivalent O(22) atoms to form CdO6 octahedra that share corners with two equivalent Mo(1)O5 square pyramids, corners with two equivalent Mo(2)O5 square pyramids, corners with two equivalent Mo(3)O5 square pyramids, corners with two equivalent Mo(4)O5 square pyramids, corners with two equivalent Mo(5)O5 square pyramids, and corners with two equivalent Mo(6)O5 square pyramids. Both Cd(2)-O(11) bond lengths are 2.25 Å. Both Cd(2)-O(21) bond lengths are 2.24 Å. Both Cd(2)-O(22) bond lengths are 2.27 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(12), one O(20), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Mo(1)O5 square pyramid,  a cornercorner with one Mo(2)O5 square pyramid,  a cornercorner with one Mo(3)O5 square pyramid,  a cornercorner with one Mo(4)O5 square pyramid,  a cornercorner with one Mo(5)O5 square pyramid,  a cornercorner with one Mo(6)O5 square pyramid, and  a cornercorner with one Cd(1)O5 square pyramid. The P(1)-O(1) bond length is 1.49 Å. The P(1)-O(12) bond length is 1.55 Å. The P(1)-O(20) bond length is 1.56 Å. The P(1)-O(8) bond length is 1.55 Å. In the second P site, P(2) is bonded to one O(13), one O(15), one O(2), and one O(25) atom to form PO4 tetrahedra that share  a cornercorner with one Mo(2)O5 square pyramid,  a cornercorner with one Mo(4)O5 square pyramid, and  a cornercorner with one Cd(1)O5 square pyramid. The P(2)-O(13) bond length is 1.52 Å. The P(2)-O(15) bond length is 1.54 Å. The P(2)-O(2) bond length is 1.47 Å. The P(2)-O(25) bond length is 1.58 Å. In the third P site, P(3) is bonded to one O(3), one O(5), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Mo(3)O5 square pyramid,  a cornercorner with one Mo(6)O5 square pyramid, and corners with two equivalent Cd(1)O5 square pyramids. The P(3)-O(3) bond length is 1.54 Å. The P(3)-O(5) bond length is 1.50 Å. The P(3)-O(6) bond length is 1.58 Å. The P(3)-O(7) bond length is 1.53 Å. In the fourth P site, P(4) is bonded to one O(10), one O(14), one O(4), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Mo(1)O5 square pyramid,  a cornercorner with one Mo(5)O5 square pyramid, and  a cornercorner with one Cd(1)O5 square pyramid. The P(4)-O(10) bond length is 1.54 Å. The P(4)-O(14) bond length is 1.55 Å. The P(4)-O(4) bond length is 1.52 Å. The P(4)-O(9) bond length is 1.54 Å. There are twenty-five inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Cd(1) and one P(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Cd(1) and one P(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Mo(6) and one P(3) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Cd(1) and one P(4) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Cd(1) and one P(3) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Cd(1) and one P(3) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Mo(3) and one P(3) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one Mo(1), one Mo(5), and one P(1) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one Mo(1) and one P(4) atom. In the tenth O site, O(10) is bonded in a single-bond geometry to one P(4) atom. In the eleventh O site, O(11) is bonded in a distorted T-shaped geometry to one Mo(2), one Mo(6), and one Cd(2) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one Mo(3), one Mo(6), and one P(1) atom. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one Mo(4) and one P(2) atom. In the fourteenth O site, O(14) is bonded in a distorted single-bond geometry to one Mo(5) and one P(4) atom. In the fifteenth O site, O(15) is bonded in a distorted single-bond geometry to one Mo(2) and one P(2) atom. In the sixteenth O site, O(16) is bonded in an L-shaped geometry to one Mo(1) and one Mo(4) atom. In the seventeenth O site, O(17) is bonded in a bent 120 degrees geometry to one Mo(3) and one Mo(6) atom. In the eighteenth O site, O(18) is bonded in a bent 120 degrees geometry to one Mo(2) and one Mo(4) atom. In the nineteenth O site, O(19) is bonded in a bent 120 degrees geometry to one Mo(1) and one Mo(5) atom. In the twentieth O site, O(20) is bonded in a distorted single-bond geometry to one Mo(2), one Mo(4), and one P(1) atom. In the twenty-first O site, O(21) is bonded in a distorted T-shaped geometry to one Mo(3), one Mo(5), and one Cd(2) atom. In the twenty-second O site, O(22) is bonded in a 3-coordinate geometry to one Mo(1), one Mo(4), and one Cd(2) atom. In the twenty-third O site, O(23) is bonded in an L-shaped geometry to one Mo(3) and one Mo(5) atom. In the twenty-fourth O site, O(24) is bonded in an L-shaped geometry to one Mo(2) and one Mo(6) atom. In the twenty-fifth O site, O(25) is bonded in a single-bond geometry to one P(2) atom. Linkers: 8 [O]P([O])([O])=O. Metal clusters: 3 [Cd] ,12 [Mo]. The MOF has largest included sphere 6.06 A, density 2.35 g/cm3, surface area 1808.16 m2/g, accessible volume 0.20 cm3/g