Sr2Mo6MnP4(HO7)4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one H(4), one O(10), one O(14), one O(16), one O(21), one O(22), and one O(25) atom. The Sr(1)-H(4) bond length is 2.51 Å. The Sr(1)-O(10) bond length is 2.81 Å. The Sr(1)-O(14) bond length is 2.64 Å. The Sr(1)-O(16) bond length is 2.55 Å. The Sr(1)-O(21) bond length is 2.76 Å. The Sr(1)-O(22) bond length is 2.64 Å. The Sr(1)-O(25) bond length is 2.78 Å. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one O(12), one O(16), one O(21), one O(26), one O(28), one O(7), and one O(8) atom. The Sr(2)-O(12) bond length is 2.56 Å. The Sr(2)-O(16) bond length is 2.64 Å. The Sr(2)-O(21) bond length is 2.68 Å. The Sr(2)-O(26) bond length is 2.68 Å. The Sr(2)-O(28) bond length is 2.67 Å. The Sr(2)-O(7) bond length is 2.63 Å. The Sr(2)-O(8) bond length is 2.61 Å. 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(9) 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, and  an edgeedge with one Mo(2)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 2.03 Å. The Mo(1)-O(15) bond length is 1.94 Å. The Mo(1)-O(2) bond length is 2.10 Å. The Mo(1)-O(9) bond length is 2.27 Å. In the second Mo site, Mo(2) is bonded to one O(10), one O(14), one O(2), one O(5), 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(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(4)O5 square pyramid. The corner-sharing octahedral tilt angles are 45°. The Mo(2)-O(10) bond length is 2.05 Å. The Mo(2)-O(14) bond length is 1.95 Å. The Mo(2)-O(2) bond length is 2.10 Å. The Mo(2)-O(5) bond length is 1.97 Å. The Mo(2)-O(9) bond length is 2.29 Å. In the third Mo site, Mo(3) is bonded to one O(17), one O(3), one O(4), one O(6), 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(4)O5 square pyramid, and  an edgeedge with one Mo(5)O5 square pyramid. The corner-sharing octahedral tilt angles are 48°. The Mo(3)-O(17) bond length is 2.07 Å. The Mo(3)-O(3) bond length is 2.26 Å. The Mo(3)-O(4) bond length is 2.09 Å. The Mo(3)-O(6) bond length is 1.98 Å. The Mo(3)-O(7) bond length is 1.95 Å. In the fourth Mo site, Mo(4) is bonded to one O(14), one O(18), one O(3), one O(4), and one O(5) 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(4)-O(14) bond length is 1.94 Å. The Mo(4)-O(18) bond length is 2.06 Å. The Mo(4)-O(3) bond length is 2.26 Å. The Mo(4)-O(4) bond length is 2.11 Å. The Mo(4)-O(5) bond length is 1.98 Å. In the fifth Mo site, Mo(5) is bonded to one O(13), one O(19), one O(23), one O(6), 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(3)O4 tetrahedra, and  an edgeedge with one Mo(3)O5 square pyramid. The corner-sharing octahedral tilt angles are 47°. The Mo(5)-O(13) bond length is 2.27 Å. The Mo(5)-O(19) bond length is 2.06 Å. The Mo(5)-O(23) bond length is 2.10 Å. The Mo(5)-O(6) bond length is 1.97 Å. The Mo(5)-O(7) bond length is 1.95 Å. In the sixth Mo site, Mo(6) is bonded in a 5-coordinate geometry to one O(1), one O(13), one O(15), one O(20), and one O(23) atom. The Mo(6)-O(1) bond length is 1.98 Å. The Mo(6)-O(13) bond length is 2.28 Å. The Mo(6)-O(15) bond length is 1.93 Å. The Mo(6)-O(20) bond length is 2.06 Å. The Mo(6)-O(23) bond length is 2.13 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(21), two equivalent O(27), and two equivalent O(8) atoms to form MnO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with two equivalent P(2)O4 tetrahedra. Both Mn(1)-O(21) bond lengths are 2.19 Å. Both Mn(1)-O(27) bond lengths are 2.23 Å. Both Mn(1)-O(8) bond lengths are 2.14 Å. In the second Mn site, Mn(2) is bonded to two equivalent O(1), two equivalent O(5), and two equivalent O(6) 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, and corners with two equivalent Mo(5)O5 square pyramids. Both Mn(2)-O(1) bond lengths are 2.20 Å. Both Mn(2)-O(5) bond lengths are 2.18 Å. Both Mn(2)-O(6) bond lengths are 2.25 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(10), one O(11), one O(12), and one O(21) atom to form PO4 tetrahedra that share  a cornercorner with one 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 31°. The P(1)-O(10) bond length is 1.56 Å. The P(1)-O(11) bond length is 1.54 Å. The P(1)-O(12) bond length is 1.52 Å. The P(1)-O(21) bond length is 1.54 Å. In the second P site, P(2) is bonded to one O(13), one O(3), one O(8), and one O(9) 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, and  a cornercorner with one Mo(5)O5 square pyramid. The corner-sharing octahedral tilt angles are 44°. The P(2)-O(13) bond length is 1.55 Å. The P(2)-O(3) bond length is 1.55 Å. The P(2)-O(8) bond length is 1.51 Å. The P(2)-O(9) bond length is 1.54 Å. In the third P site, P(3) is bonded to one O(16), one O(19), one O(20), and one O(24) atom to form PO4 tetrahedra that share  a cornercorner with one Mo(5)O5 square pyramid. The P(3)-O(16) bond length is 1.50 Å. The P(3)-O(19) bond length is 1.53 Å. The P(3)-O(20) bond length is 1.54 Å. The P(3)-O(24) bond length is 1.57 Å. In the fourth P site, P(4) is bonded to one O(17), one O(18), one O(22), and one O(25) atom to form PO4 tetrahedra that share  a cornercorner with one Mo(3)O5 square pyramid and  a cornercorner with one Mo(4)O5 square pyramid. The P(4)-O(17) bond length is 1.53 Å. The P(4)-O(18) bond length is 1.54 Å. The P(4)-O(22) bond length is 1.57 Å. The P(4)-O(25) bond length is 1.50 Å. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(22) atom. The H(1)-O(22) bond length is 0.82 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(24) atom. The H(2)-O(24) bond length is 0.82 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(27) atom. The H(3)-O(27) bond length is 0.85 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one Sr(1) and one O(27) atom. The H(4)-O(27) bond length is 0.85 Å. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mo(1), one Mo(6), and one Mn(2) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Mo(1) and one Mo(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Mo(3), one Mo(4), and one P(2) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Mo(3) and one Mo(4) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mo(2), one Mo(4), and one Mn(2) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Mo(3), one Mo(5), and one Mn(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Sr(2), one Mo(3), and one Mo(5) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Sr(2), one Mn(1), and one P(2) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one Mo(1), one Mo(2), and one P(2) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one Sr(1), one Mo(2), and one P(1) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to one Mo(1) and one P(1) atom. In the twelfth O site, O(12) is bonded in a distorted water-like geometry to one Sr(2) and one P(1) atom. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one Mo(5), one Mo(6), and one P(2) atom. In the fourteenth O site, O(14) is bonded in a distorted T-shaped geometry to one Sr(1), one Mo(2), and one Mo(4) atom. In the fifteenth O site, O(15) is bonded in an L-shaped geometry to one Mo(1) and one Mo(6) atom. In the sixteenth O site, O(16) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(2), and one P(3) atom. In the seventeenth O site, O(17) is bonded in a distorted single-bond geometry to one Mo(3) and one P(4) atom. In the eighteenth O site, O(18) is bonded in a distorted single-bond geometry to one Mo(4) and one P(4) atom. In the nineteenth O site, O(19) is bonded in a 2-coordinate geometry to one Mo(5) and one P(3) atom. In the twentieth O site, O(20) is bonded in a distorted single-bond geometry to one Mo(6) and one P(3) atom. In the twenty-first O site, O(21) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(2), one Mn(1), and one P(1) atom. In the twenty-second O site, O(22) is bonded in a distorted water-like geometry to one Sr(1), one P(4), and one H(1) atom. In the twenty-third O site, O(23) is bonded in a bent 120 degrees geometry to one Mo(5) and one Mo(6) atom. In the twenty-fourth O site, O(24) is bonded in a water-like geometry to one P(3) and one H(2) atom. In the twenty-fifth O site, O(25) is bonded in a distorted single-bond geometry to one Sr(1) and one P(4) atom. In the twenty-sixth O site, O(26) is bonded in a distorted L-shaped geometry to one Sr(2) and one O(28) atom. The O(26)-O(28) bond length is 0.74 Å. In the twenty-seventh O site, O(27) is bonded in a distorted water-like geometry to one Mn(1), one H(3), and one H(4) atom. In the twenty-eighth O site, O(28) is bonded in an L-shaped geometry to one Sr(2) and one O(26) atom. Linkers: 8 [O]P([O])(=O)O ,4 O ,8 [O]P([O])([O])=O. Metal clusters: 8 [Sr] ,4 [Mn] ,24 [Mo]. The MOF has largest included sphere 5.30 A, density 2.44 g/cm3, surface area 1673.64 m2/g, accessible volume 0.16 cm3/g