Mo12Mn3P8(HO26)2 crystallizes in the monoclinic P2_1/c space group. There are six inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(1), one O(11), one O(15), one O(2), and one O(7) atom to form distorted MoO5 square pyramids that share  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(4)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 46°. The Mo(1)-O(1) bond length is 1.98 Å. The Mo(1)-O(11) bond length is 2.30 Å. The Mo(1)-O(15) bond length is 2.03 Å. The Mo(1)-O(2) bond length is 1.94 Å. The Mo(1)-O(7) bond length is 2.12 Å. In the second Mo site, Mo(2) is bonded to one O(11), one O(3), one O(4), one O(7), and one O(9) atom to form distorted MoO5 square pyramids that share  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one P(2)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(6)O5 square pyramid. The corner-sharing octahedral tilt angles are 46°. The Mo(2)-O(11) bond length is 2.23 Å. The Mo(2)-O(3) bond length is 1.97 Å. The Mo(2)-O(4) bond length is 1.93 Å. The Mo(2)-O(7) bond length is 2.14 Å. The Mo(2)-O(9) bond length is 2.08 Å. In the third Mo site, Mo(3) is bonded to one O(1), one O(12), one O(16), one O(18), and one O(2) atom to form distorted MoO5 square pyramids that share  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  an edgeedge with one Mo(1)O5 square pyramid, and  an edgeedge with one Mo(4)O5 square pyramid. The corner-sharing octahedral tilt angles are 46°. The Mo(3)-O(1) bond length is 1.97 Å. The Mo(3)-O(12) bond length is 2.05 Å. The Mo(3)-O(16) bond length is 2.11 Å. The Mo(3)-O(18) bond length is 2.27 Å. The Mo(3)-O(2) bond length is 1.93 Å. In the fourth Mo site, Mo(4) is bonded to one O(10), one O(13), one O(14), one O(16), and one O(18) atom to form distorted MoO5 square pyramids that share  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  an edgeedge with one Mo(3)O5 square pyramid, and  an edgeedge with one Mo(5)O5 square pyramid. The corner-sharing octahedral tilt angles are 45°. The Mo(4)-O(10) bond length is 1.94 Å. The Mo(4)-O(13) bond length is 1.97 Å. The Mo(4)-O(14) bond length is 2.07 Å. The Mo(4)-O(16) bond length is 2.12 Å. The Mo(4)-O(18) bond length is 2.29 Å. In the fifth Mo site, Mo(5) is bonded to one O(10), one O(13), one O(19), one O(5), and one O(6) atom to form distorted MoO5 square pyramids that share  a cornercorner with one Mn(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 46°. The Mo(5)-O(10) bond length is 1.94 Å. The Mo(5)-O(13) bond length is 1.99 Å. The Mo(5)-O(19) bond length is 2.12 Å. The Mo(5)-O(5) bond length is 2.03 Å. The Mo(5)-O(6) bond length is 2.30 Å. In the sixth Mo site, Mo(6) is bonded to one O(19), one O(3), one O(4), one O(6), and one O(8) atom to form distorted MoO5 square pyramids that share  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  an edgeedge with one Mo(2)O5 square pyramid, and  an edgeedge with one Mo(5)O5 square pyramid. The corner-sharing octahedral tilt angles are 47°. The Mo(6)-O(19) bond length is 2.10 Å. The Mo(6)-O(3) bond length is 1.98 Å. The Mo(6)-O(4) bond length is 1.95 Å. The Mo(6)-O(6) bond length is 2.30 Å. The Mo(6)-O(8) bond length is 2.04 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(17), one O(20), one O(22), one O(23), one O(25), and one O(26) atom to form MnO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. The Mn(1)-O(17) bond length is 2.14 Å. The Mn(1)-O(20) bond length is 2.19 Å. The Mn(1)-O(22) bond length is 2.32 Å. The Mn(1)-O(23) bond length is 2.08 Å. The Mn(1)-O(25) bond length is 2.16 Å. The Mn(1)-O(26) bond length is 2.25 Å. In the second Mn site, Mn(2) is bonded to two equivalent O(1), two equivalent O(13), and two equivalent O(3) atoms to form MnO6 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 Mn(2)-O(1) bond lengths are 2.17 Å. Both Mn(2)-O(13) bond lengths are 2.21 Å. Both Mn(2)-O(3) bond lengths are 2.22 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(21), one O(25), one O(5), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mo(5)O5 square pyramid, and  a cornercorner with one Mo(6)O5 square pyramid. The corner-sharing octahedral tilt angles are 53°. The P(1)-O(21) bond length is 1.54 Å. The P(1)-O(25) bond length is 1.51 Å. The P(1)-O(5) bond length is 1.55 Å. The P(1)-O(8) bond length is 1.55 Å. In the second P site, P(2) is bonded to one O(11), one O(18), one O(20), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  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, and  a cornercorner with one Mo(6)O5 square pyramid. The corner-sharing octahedral tilt angles are 46°. The P(2)-O(11) bond length is 1.56 Å. The P(2)-O(18) bond length is 1.56 Å. The P(2)-O(20) bond length is 1.51 Å. The P(2)-O(6) bond length is 1.54 Å. In the third P site, P(3) is bonded to one O(12), one O(14), one O(17), and one O(24) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mo(3)O5 square pyramid, and  a cornercorner with one Mo(4)O5 square pyramid. The corner-sharing octahedral tilt angles are 40°. The P(3)-O(12) bond length is 1.55 Å. The P(3)-O(14) bond length is 1.54 Å. The P(3)-O(17) bond length is 1.49 Å. The P(3)-O(24) bond length is 1.58 Å. In the fourth P site, P(4) is bonded to one O(15), one O(22), one O(23), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra,  a cornercorner with one Mo(1)O5 square pyramid, and  a cornercorner with one Mo(2)O5 square pyramid. The corner-sharing octahedral tilt angles are 34°. The P(4)-O(15) bond length is 1.54 Å. The P(4)-O(22) bond length is 1.57 Å. The P(4)-O(23) bond length is 1.49 Å. The P(4)-O(9) bond length is 1.55 Å. H(1) is bonded in a single-bond geometry to one O(26) atom. The H(1)-O(26) bond length is 0.82 Å. There are twenty-six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mo(1), one Mo(3), and one Mn(2) atom. In the second O site, O(2) is bonded in an L-shaped geometry to one Mo(1) and one Mo(3) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mo(2), one Mo(6), and one Mn(2) atom. In the fourth O site, O(4) is bonded in an L-shaped geometry to one Mo(2) and one Mo(6) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Mo(5) and one P(1) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Mo(5), one Mo(6), and one P(2) atom. In the seventh O site, O(7) is bonded in a water-like geometry to one Mo(1) and one Mo(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Mo(6) and one P(1) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one Mo(2) and one P(4) atom. In the tenth O site, O(10) is bonded in an L-shaped geometry to one Mo(4) and one Mo(5) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to one Mo(1), one Mo(2), and one P(2) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one Mo(3) and one P(3) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Mo(4), one Mo(5), and one Mn(2) atom. In the fourteenth O site, O(14) is bonded in a distorted single-bond geometry to one Mo(4) and one P(3) atom. In the fifteenth O site, O(15) is bonded in a distorted single-bond geometry to one Mo(1) and one P(4) atom. In the sixteenth O site, O(16) is bonded in a bent 120 degrees geometry to one Mo(3) and one Mo(4) atom. In the seventeenth O site, O(17) is bonded in a bent 150 degrees geometry to one Mn(1) and one P(3) atom. In the eighteenth O site, O(18) is bonded in a distorted single-bond geometry to one Mo(3), one Mo(4), and one P(2) atom. In the nineteenth O site, O(19) is bonded in a bent 120 degrees geometry to one Mo(5) and one Mo(6) atom. In the twentieth O site, O(20) is bonded in a distorted bent 120 degrees geometry to one Mn(1) and one P(2) atom. In the twenty-first O site, O(21) is bonded in a single-bond geometry to one P(1) atom. In the twenty-second O site, O(22) is bonded in a bent 150 degrees geometry to one Mn(1) and one P(4) atom. In the twenty-third O site, O(23) is bonded in a bent 150 degrees geometry to one Mn(1) and one P(4) atom. In the twenty-fourth O site, O(24) is bonded in a single-bond geometry to one P(3) atom. In the twenty-fifth O site, O(25) is bonded in a bent 120 degrees geometry to one Mn(1) and one P(1) atom. In the twenty-sixth O site, O(26) is bonded in a distorted water-like geometry to one Mn(1) and one H(1) atom. Linkers: 16 [O]P([O])([O])=O. Metal clusters: 6 [Mn] ,24 [Mo]. The MOF has largest included sphere 5.57 A, density 2.37 g/cm3, surface area 1779.46 m2/g, accessible volume 0.21 cm3/g