Zn3C4P2H4O13 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(1), one O(10), one O(11), one O(12), one O(13), one O(4), and one O(6) atom to form distorted ZnO7 pentagonal bipyramids that share  a cornercorner with one P(1)CO3 tetrahedra, corners with two equivalent P(2)CO3 tetrahedra, and  an edgeedge with one Zn(2)O6 octahedra. The Zn(1)-O(1) bond length is 2.06 Å. The Zn(1)-O(10) bond length is 2.09 Å. The Zn(1)-O(11) bond length is 1.98 Å. The Zn(1)-O(12) bond length is 2.05 Å. The Zn(1)-O(13) bond length is 2.19 Å. The Zn(1)-O(4) bond length is 2.10 Å. The Zn(1)-O(6) bond length is 1.97 Å. In the second Zn site, Zn(2) is bonded to one O(1), one O(4), one O(7), one O(8), and two equivalent O(5) atoms to form ZnO6 octahedra that share  a cornercorner with one Zn(3)O4 tetrahedra,  a cornercorner with one P(1)CO3 tetrahedra, corners with three equivalent P(2)CO3 tetrahedra,  an edgeedge with one Zn(2)O6 octahedra, and  an edgeedge with one Zn(1)O7 pentagonal bipyramid. The Zn(2)-O(1) bond length is 2.08 Å. The Zn(2)-O(4) bond length is 2.13 Å. The Zn(2)-O(7) bond length is 2.13 Å. The Zn(2)-O(8) bond length is 2.09 Å. There is one shorter (2.10 Å) and one longer (2.11 Å) Zn(2)-O(5) bond length. In the third Zn site, Zn(3) is bonded to one O(2), one O(3), one O(8), and one O(9) atom to form ZnO4 tetrahedra that share  a cornercorner with one Zn(2)O6 octahedra and corners with two equivalent P(1)CO3 tetrahedra. The corner-sharing octahedral tilt angles are 61°. The Zn(3)-O(2) bond length is 1.93 Å. The Zn(3)-O(3) bond length is 1.93 Å. The Zn(3)-O(8) bond length is 2.02 Å. The Zn(3)-O(9) bond length is 1.96 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a distorted water-like geometry to one P(1), one H(1), and one H(2) atom. The C(1)-P(1) bond length is 1.82 Å. The C(1)-H(1) bond length is 0.98 Å. The C(1)-H(2) bond length is 0.98 Å. In the second C site, C(2) is bonded in a distorted water-like geometry to one P(2), one H(3), and one H(4) atom. The C(2)-P(2) bond length is 1.81 Å. The C(2)-H(3) bond length is 0.95 Å. The C(2)-H(4) bond length is 0.95 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one O(7) and one O(8) atom. The C(3)-O(7) bond length is 1.24 Å. The C(3)-O(8) bond length is 1.30 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one O(10) and one O(9) atom. The C(4)-O(10) bond length is 1.25 Å. The C(4)-O(9) bond length is 1.27 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to one C(1), one O(1), one O(2), and one O(3) atom to form PCO3 tetrahedra that share  a cornercorner with one Zn(2)O6 octahedra,  a cornercorner with one Zn(1)O7 pentagonal bipyramid, and corners with two equivalent Zn(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 42°. The P(1)-O(1) bond length is 1.53 Å. The P(1)-O(2) bond length is 1.51 Å. The P(1)-O(3) bond length is 1.54 Å. In the second P site, P(2) is bonded to one C(2), one O(4), one O(5), and one O(6) atom to form PCO3 tetrahedra that share corners with three equivalent Zn(2)O6 octahedra and corners with two equivalent Zn(1)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 44-54°. The P(2)-O(4) bond length is 1.53 Å. The P(2)-O(5) bond length is 1.54 Å. The P(2)-O(6) bond length is 1.52 Å. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(1) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(2) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(2) atom. There are thirteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Zn(1), one Zn(2), and one P(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Zn(3) and one P(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Zn(3) and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Zn(1), one Zn(2), and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to two equivalent Zn(2) and one P(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Zn(1) and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Zn(2) and one C(3) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Zn(2), one Zn(3), and one C(3) atom. In the ninth O site, O(9) is bonded in a water-like geometry to one Zn(3) and one C(4) atom. In the tenth O site, O(10) is bonded in a distorted bent 120 degrees geometry to one Zn(1) and one C(4) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Zn(1), one O(12), and one O(13) atom. The O(11)-O(12) bond length is 1.51 Å. The O(11)-O(13) bond length is 1.33 Å. In the twelfth O site, O(12) is bonded in a 2-coordinate geometry to one Zn(1) and one O(11) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one Zn(1) and one O(11) atom. Linkers: 8 [O]C(=O)CP([O])([O])=O. Metal clusters: 12 [Zn]. The MOF has largest included sphere 4.16 A, density 2.48 g/cm3, surface area 2292.67 m2/g, accessible volume 0.14 cm3/g