InPH12(C3O)7 crystallizes in the triclinic P1 space group. In(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form distorted InO7 pentagonal bipyramids that share  a cornercorner with one P(1)C3O tetrahedra. The In(1)-O(1) bond length is 2.26 Å. The In(1)-O(2) bond length is 2.26 Å. The In(1)-O(3) bond length is 2.27 Å. The In(1)-O(4) bond length is 2.30 Å. The In(1)-O(5) bond length is 2.30 Å. The In(1)-O(6) bond length is 2.30 Å. The In(1)-O(7) bond length is 2.14 Å. There are twenty inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(16), one C(4), and one P(1) atom. The C(1)-C(16) bond length is 1.40 Å. The C(1)-C(4) bond length is 1.41 Å. The C(1)-P(1) bond length is 1.80 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(17), one C(5), and one P(1) atom. The C(2)-C(17) bond length is 1.40 Å. The C(2)-C(5) bond length is 1.41 Å. The C(2)-P(1) bond length is 1.80 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(18), one C(6), and one P(1) atom. The C(3)-C(18) bond length is 1.40 Å. The C(3)-C(6) bond length is 1.41 Å. The C(3)-P(1) bond length is 1.80 Å. In the fourth C site, C(4) is bonded in a distorted trigonal planar geometry to one C(1), one C(7), and one H(1) atom. The C(4)-C(7) bond length is 1.39 Å. The C(4)-H(1) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(2), one C(8), and one H(2) atom. The C(5)-C(8) bond length is 1.39 Å. The C(5)-H(2) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(3), one C(9), and one H(3) atom. The C(6)-C(9) bond length is 1.39 Å. The C(6)-H(3) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(10), one C(4), and one H(4) atom. The C(7)-C(10) bond length is 1.41 Å. The C(7)-H(4) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(11), one C(5), and one H(5) atom. The C(8)-C(11) bond length is 1.41 Å. The C(8)-H(5) bond length is 1.09 Å. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to one C(12), one C(6), and one H(6) atom. The C(9)-C(12) bond length is 1.41 Å. The C(9)-H(6) bond length is 1.09 Å. In the tenth C site, C(10) is bonded in a trigonal planar geometry to one C(13); one C(19,20); and one C(7) atom. The C(10)-C(13) bond length is 1.40 Å. The C(10)-C(19,20) bond length is 1.49 Å. In the eleventh C site, C(11) is bonded in a trigonal planar geometry to one C(14); one C(19,20); and one C(8) atom. The C(11)-C(14) bond length is 1.40 Å. The C(11)-C(19,20) bond length is 1.49 Å. In the twelfth C site, C(12) is bonded in a trigonal planar geometry to one C(15), one C(21), and one C(9) atom. The C(12)-C(15) bond length is 1.40 Å. The C(12)-C(21) bond length is 1.49 Å. In the thirteenth C site, C(13) is bonded in a distorted trigonal planar geometry to one C(10); one C(16); and one H(7,8) atom. The C(13)-C(16) bond length is 1.39 Å. The C(13)-H(7,8) bond length is 1.09 Å. In the fourteenth C site, C(14) is bonded in a distorted trigonal planar geometry to one C(11); one C(17); and one H(7,8) atom. The C(14)-C(17) bond length is 1.39 Å. The C(14)-H(7,8) bond length is 1.09 Å. In the fifteenth C site, C(15) is bonded in a distorted trigonal planar geometry to one C(12), one C(18), and one H(9) atom. The C(15)-C(18) bond length is 1.39 Å. The C(15)-H(9) bond length is 1.09 Å. In the sixteenth C site, C(16) is bonded in a distorted trigonal planar geometry to one C(1), one C(13), and one H(10) atom. The C(16)-H(10) bond length is 1.09 Å. In the seventeenth C site, C(17) is bonded in a distorted trigonal planar geometry to one C(14); one C(2); and one H(11,12) atom. The C(17)-H(11,12) bond length is 1.09 Å. In the eighteenth C site, C(18) is bonded in a distorted trigonal planar geometry to one C(15); one C(3); and one H(11,12) atom. The C(18)-H(11,12) bond length is 1.09 Å. In the nineteenth C site, C(19,20) is bonded in a distorted bent 120 degrees geometry to one C(10), one O(1), and one O(4) atom. The C(19,20)-O(1) bond length is 1.28 Å. The C(19,20)-O(4) bond length is 1.28 Å. In the twentieth C site, C(21) is bonded in a distorted bent 120 degrees geometry to one C(12), one O(3), and one O(6) atom. The C(21)-O(3) bond length is 1.28 Å. The C(21)-O(6) bond length is 1.28 Å. P(1) is bonded to one C(1), one C(2), one C(3), and one O(7) atom to form PC3O tetrahedra that share  a cornercorner with one In(1)O7 pentagonal bipyramid. The P(1)-O(7) bond length is 1.50 Å. There are ten inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(4) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(5) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(6) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(7) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(8) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(9) atom. In the seventh H site, H(7,8) is bonded in a single-bond geometry to one C(13) atom. In the eighth H site, H(9) is bonded in a single-bond geometry to one C(15) atom. In the ninth H site, H(10) is bonded in a single-bond geometry to one C(16) atom. In the tenth H site, H(11,12) is bonded in a single-bond geometry to one C(17) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted L-shaped geometry to one In(1) and one C(19,20) atom. In the second O site, O(2) is bonded in a distorted L-shaped geometry to one In(1) and one C(19,20) atom. The O(2)-C(19,20) bond length is 1.28 Å. In the third O site, O(3) is bonded in a distorted L-shaped geometry to one In(1) and one C(21) atom. In the fourth O site, O(4) is bonded in an L-shaped geometry to one In(1) and one C(19,20) atom. In the fifth O site, O(5) is bonded in an L-shaped geometry to one In(1) and one C(19,20) atom. The O(5)-C(19,20) bond length is 1.28 Å. In the sixth O site, O(6) is bonded in an L-shaped geometry to one In(1) and one C(21) atom. In the seventh O site, O(7) is bonded in a linear geometry to one In(1) and one P(1) atom. Linkers: 1 [O]C(=O)c1ccc(P(=O)(c2ccc(C([O])=O)cc2)c2ccc(C([O])=O)cc2)cc1. Metal clusters: 1 [O][C]=O.[O][In](O[C]=O)O[C]=O. RCSR code: dia. The MOF has largest included sphere 3.18 A, density 1.54 g/cm3, surface area 4107.87 m2/g, accessible volume 0.17 cm3/g