In9P17H11O60 crystallizes in the hexagonal P6_3/m space group. There are three inequivalent In sites. In the first In site, In(1) is bonded to one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form InO5 square pyramids that share  a cornercorner with one P(1)HO3 tetrahedra,  a cornercorner with one P(3)HO3 tetrahedra, and corners with three equivalent P(2)O4 tetrahedra. The In(1)-O(2) bond length is 2.12 Å. The In(1)-O(3) bond length is 2.11 Å. The In(1)-O(4) bond length is 2.11 Å. The In(1)-O(6) bond length is 2.10 Å. The In(1)-O(7) bond length is 2.10 Å. In the second In site, In(2) is bonded to six equivalent O(1) atoms to form InO6 octahedra that share corners with six equivalent P(1)HO3 tetrahedra. All In(2)-O(1) bond lengths are 2.15 Å. In the third In site, In(3) is bonded to three equivalent O(5) and three equivalent O(8) atoms to form InO6 octahedra that share corners with three equivalent P(1)HO3 tetrahedra and corners with three equivalent P(4)O4 tetrahedra. All In(3)-O(5) bond lengths are 2.11 Å. All In(3)-O(8) bond lengths are 2.12 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded to one H(1), one O(1), one O(3), and one O(5) atom to form distorted PHO3 tetrahedra that share  a cornercorner with one In(2)O6 octahedra,  a cornercorner with one In(3)O6 octahedra, and  a cornercorner with one In(1)O5 square pyramid. The corner-sharing octahedral tilt angles range from 44-45°. The P(1)-H(1) bond length is 1.34 Å. The P(1)-O(1) bond length is 1.52 Å. The P(1)-O(3) bond length is 1.51 Å. The P(1)-O(5) bond length is 1.51 Å. In the second P site, P(2) is bonded to one O(2), one O(4), one O(7), and one O(9) atom to form PO4 tetrahedra that share corners with three equivalent In(1)O5 square pyramids. The P(2)-O(2) bond length is 1.51 Å. The P(2)-O(4) bond length is 1.52 Å. The P(2)-O(7) bond length is 1.51 Å. The P(2)-O(9) bond length is 1.49 Å. In the third P site, P(3) is bonded to one H(2) and three equivalent O(6) atoms to form distorted PHO3 tetrahedra that share corners with three equivalent In(1)O5 square pyramids. The P(3)-H(2) bond length is 1.32 Å. All P(3)-O(6) bond lengths are 1.50 Å. In the fourth P site, P(4) is bonded to one O(10), one O(11), and two equivalent O(8) atoms to form PO4 tetrahedra that share corners with two equivalent In(3)O6 octahedra. The corner-sharing octahedral tilt angles are 43°. The P(4)-O(10) bond length is 1.55 Å. The P(4)-O(11) bond length is 1.47 Å. Both P(4)-O(8) bond lengths are 1.50 Å. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one P(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one P(3) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(10) atom. The H(3)-O(10) bond length is 0.82 Å. There are eleven inequivalent O sites. In the first O site, O(10) is bonded in a bent 150 degrees geometry to one P(4) and one H(3) atom. In the second O site, O(11) is bonded in a single-bond geometry to one P(4) atom. In the third O site, O(1) is bonded in a distorted bent 150 degrees geometry to one In(2) and one P(1) atom. In the fourth O site, O(2) is bonded in a distorted bent 120 degrees geometry to one In(1) and one P(2) atom. In the fifth O site, O(3) is bonded in a distorted bent 150 degrees geometry to one In(1) and one P(1) atom. In the sixth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one In(1) and one P(2) atom. In the seventh O site, O(5) is bonded in a distorted bent 150 degrees geometry to one In(3) and one P(1) atom. In the eighth O site, O(6) is bonded in a bent 150 degrees geometry to one In(1) and one P(3) atom. In the ninth O site, O(7) is bonded in a distorted bent 120 degrees geometry to one In(1) and one P(2) atom. In the tenth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one In(3) and one P(4) atom. In the eleventh O site, O(9) is bonded in a single-bond geometry to one P(2) atom. Linkers: 12 [O]P([O])([O])=O ,16 [O][PH]([O])=O ,6 [O]P([O])(=O)O. Metal clusters: 18 [In]. The MOF has largest included sphere 6.11 A, density 1.82 g/cm3, surface area 2523.04 m2/g, accessible volume 0.32 cm3/g