Fe2C3PHO10 crystallizes in the monoclinic P2_1 space group. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form distorted FeO6 pentagonal pyramids that share  a cornercorner with one Fe(2)O6 octahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles are 74°. The Fe(1)-O(1) bond length is 1.99 Å. The Fe(1)-O(2) bond length is 2.10 Å. The Fe(1)-O(3) bond length is 2.12 Å. The Fe(1)-O(4) bond length is 2.14 Å. The Fe(1)-O(5) bond length is 2.24 Å. The Fe(1)-O(6) bond length is 2.28 Å. In the second Fe site, Fe(2) is bonded to one O(3), one O(4), one O(6), one O(7), one O(8), and one O(9) atom to form distorted FeO6 octahedra that share  a cornercorner with one Fe(1)O6 pentagonal pyramid, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one Fe(1)O6 pentagonal pyramid. The Fe(2)-O(3) bond length is 2.23 Å. The Fe(2)-O(4) bond length is 2.11 Å. The Fe(2)-O(6) bond length is 2.58 Å. The Fe(2)-O(7) bond length is 1.98 Å. The Fe(2)-O(8) bond length is 2.09 Å. The Fe(2)-O(9) bond length is 2.14 Å. In the third Fe site, Fe(3) is bonded to one O(10), one O(11), one O(12), one O(13), one O(14), and one O(15) atom to form distorted FeO6 pentagonal pyramids that share  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, and  an edgeedge with one Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles are 73°. The Fe(3)-O(10) bond length is 2.01 Å. The Fe(3)-O(11) bond length is 2.05 Å. The Fe(3)-O(12) bond length is 2.13 Å. The Fe(3)-O(13) bond length is 2.14 Å. The Fe(3)-O(14) bond length is 2.22 Å. The Fe(3)-O(15) bond length is 2.33 Å. In the fourth Fe site, Fe(4) is bonded to one O(12), one O(13), one O(15), one O(16), one O(17), and one O(18) atom to form distorted FeO6 octahedra that share  a cornercorner with one Fe(3)O6 pentagonal pyramid, corners with two equivalent P(1)O4 tetrahedra, and  an edgeedge with one Fe(3)O6 pentagonal pyramid. The Fe(4)-O(12) bond length is 2.25 Å. The Fe(4)-O(13) bond length is 2.13 Å. The Fe(4)-O(15) bond length is 2.45 Å. The Fe(4)-O(16) bond length is 1.96 Å. The Fe(4)-O(17) bond length is 2.13 Å. The Fe(4)-O(18) bond length is 2.12 Å. There are six inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(11) and one O(17) atom. The C(1)-O(11) bond length is 1.26 Å. The C(1)-O(17) bond length is 1.23 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one O(15) and one O(18) atom. The C(2)-O(15) bond length is 1.26 Å. The C(2)-O(18) bond length is 1.25 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one O(6) and one O(9) atom. The C(3)-O(6) bond length is 1.24 Å. The C(3)-O(9) bond length is 1.26 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one O(2) and one O(8) atom. The C(4)-O(2) bond length is 1.25 Å. The C(4)-O(8) bond length is 1.25 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one O(12) and one O(5) atom. The C(5)-O(12) bond length is 1.28 Å. The C(5)-O(5) bond length is 1.23 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one O(14) and one O(3) atom. The C(6)-O(14) bond length is 1.24 Å. The C(6)-O(3) bond length is 1.25 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(10), one O(13), one O(16), and one O(19) atom to form PO4 tetrahedra that share corners with two equivalent Fe(4)O6 octahedra and corners with two equivalent Fe(3)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 43-53°. The P(1)-O(10) bond length is 1.52 Å. The P(1)-O(13) bond length is 1.53 Å. The P(1)-O(16) bond length is 1.52 Å. The P(1)-O(19) bond length is 1.58 Å. In the second P site, P(2) is bonded to one O(1), one O(20), one O(4), and one O(7) atom to form PO4 tetrahedra that share corners with two equivalent Fe(2)O6 octahedra and corners with two equivalent Fe(1)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 45-51°. The P(2)-O(1) bond length is 1.53 Å. The P(2)-O(20) bond length is 1.58 Å. The P(2)-O(4) bond length is 1.53 Å. The P(2)-O(7) bond length is 1.50 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(19) atom. The H(1)-O(19) bond length is 0.82 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(20) atom. The H(2)-O(20) bond length is 0.82 Å. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Fe(1) and one P(2) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Fe(1) and one C(4) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Fe(1), one Fe(2), and one C(6) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Fe(1), one Fe(2), and one P(2) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Fe(1) and one C(5) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Fe(1), one Fe(2), and one C(3) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Fe(2) and one P(2) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Fe(2) and one C(4) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Fe(2) and one C(3) atom. In the tenth O site, O(10) is bonded in a distorted bent 120 degrees geometry to one Fe(3) and one P(1) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Fe(3) and one C(1) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Fe(3), one Fe(4), and one C(5) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Fe(3), one Fe(4), and one P(1) atom. In the fourteenth O site, O(14) is bonded in a bent 120 degrees geometry to one Fe(3) and one C(6) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal non-coplanar geometry to one Fe(3), one Fe(4), and one C(2) atom. In the sixteenth O site, O(16) is bonded in a distorted bent 150 degrees geometry to one Fe(4) and one P(1) atom. In the seventeenth O site, O(17) is bonded in a bent 120 degrees geometry to one Fe(4) and one C(1) atom. In the eighteenth O site, O(18) is bonded in a bent 120 degrees geometry to one Fe(4) and one C(2) atom. In the nineteenth O site, O(19) is bonded in a water-like geometry to one P(1) and one H(1) atom. In the twentieth O site, O(20) is bonded in a water-like geometry to one P(2) and one H(2) atom. Linkers: 6 [O]C(=O)C([O])=O. Metal clusters: 8 [Fe]. The MOF has largest included sphere 3.93 A, density 2.10 g/cm3, surface area 2271.40 m2/g, accessible volume 0.15 cm3/g