Zn5C20P4H26(NO6)4 crystallizes in the triclinic P-1 space group. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one N(1), one O(1), one O(10), one O(11), one O(5), and one O(6) atom to form ZnNO5 octahedra that share  a cornercorner with one Zn(2)O4 tetrahedra,  a cornercorner with one C(3)PHCO tetrahedra, and  a cornercorner with one P(1)CO3 tetrahedra. The Zn(1)-N(1) bond length is 2.13 Å. The Zn(1)-O(1) bond length is 2.42 Å. The Zn(1)-O(10) bond length is 2.17 Å. The Zn(1)-O(11) bond length is 2.09 Å. The Zn(1)-O(5) bond length is 2.04 Å. The Zn(1)-O(6) bond length is 2.03 Å. In the second Zn site, Zn(2) is bonded to one O(1), one O(2), one O(3), and one O(7) atom to form ZnO4 tetrahedra that share  a cornercorner with one Zn(1)NO5 octahedra,  a cornercorner with one P(2)CO3 tetrahedra, and corners with three equivalent P(1)CO3 tetrahedra. The corner-sharing octahedral tilt angles are 68°. The Zn(2)-O(1) bond length is 2.00 Å. The Zn(2)-O(2) bond length is 1.92 Å. The Zn(2)-O(3) bond length is 1.98 Å. The Zn(2)-O(7) bond length is 1.94 Å. In the third Zn site, Zn(3) is bonded to two equivalent O(12), two equivalent O(8), and two equivalent O(9) atoms to form ZnO6 octahedra that share corners with four equivalent P(2)CO3 tetrahedra. Both Zn(3)-O(12) bond lengths are 2.17 Å. Both Zn(3)-O(8) bond lengths are 2.02 Å. Both Zn(3)-O(9) bond lengths are 2.17 Å. There are ten inequivalent C sites. In the first C site, C(1) is bonded in a 4-coordinate geometry to one C(2), one P(1), one H(6), and one O(4) atom. The C(1)-C(2) bond length is 1.53 Å. The C(1)-P(1) bond length is 1.85 Å. The C(1)-H(6) bond length is 1.10 Å. The C(1)-O(4) bond length is 1.43 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(5), and one O(6) atom. The C(2)-O(5) bond length is 1.27 Å. The C(2)-O(6) bond length is 1.27 Å. In the third C site, C(3) is bonded to one C(4), one P(2), one H(7), and one O(10) atom to form distorted CPHCO tetrahedra that share  a cornercorner with one Zn(1)NO5 octahedra. The corner-sharing octahedral tilt angles are 66°. The C(3)-C(4) bond length is 1.52 Å. The C(3)-P(2) bond length is 1.87 Å. The C(3)-H(7) bond length is 1.10 Å. The C(3)-O(10) bond length is 1.44 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(11), and one O(12) atom. The C(4)-O(11) bond length is 1.29 Å. The C(4)-O(12) bond length is 1.26 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(6), one N(1), and one H(8) atom. The C(5)-C(6) bond length is 1.39 Å. The C(5)-N(1) bond length is 1.35 Å. The C(5)-H(8) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(5) and one H(9) atom. The C(6)-H(9) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(8) and one H(10) atom. The C(7)-C(8) bond length is 1.40 Å. The C(7)-H(10) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(10), one C(7), and one C(9) atom. The C(8)-C(10) bond length is 1.50 Å. The C(8)-C(9) bond length is 1.40 Å. In the ninth C site, C(9) is bonded in a distorted trigonal planar geometry to one C(8), one N(1), and one H(11) atom. The C(9)-N(1) bond length is 1.34 Å. The C(9)-H(11) bond length is 1.09 Å. In the tenth C site, C(10) is bonded in a distorted trigonal non-coplanar geometry to one C(8), one N(2), one H(12), and one H(13) atom. The C(10)-N(2) bond length is 1.49 Å. The C(10)-H(12) bond length is 1.10 Å. The C(10)-H(13) bond length is 1.10 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(1)NO5 octahedra and corners with three equivalent Zn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 59°. The P(1)-O(1) bond length is 1.56 Å. The P(1)-O(2) bond length is 1.53 Å. The P(1)-O(3) bond length is 1.53 Å. In the second P site, P(2) is bonded to one C(3), one O(7), one O(8), and one O(9) atom to form distorted PCO3 tetrahedra that share corners with two equivalent Zn(3)O6 octahedra and  a cornercorner with one Zn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-52°. The P(2)-O(7) bond length is 1.55 Å. The P(2)-O(8) bond length is 1.52 Å. The P(2)-O(9) bond length is 1.53 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Zn(1), one C(5), and one C(9) atom. In the second N site, N(2) is bonded in a distorted tetrahedral geometry to one C(10), one H(3), one H(4), and one H(5) atom. The N(2)-H(3) bond length is 1.04 Å. The N(2)-H(4) bond length is 1.04 Å. The N(2)-H(5) bond length is 1.06 Å. There are thirteen inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(4) atom. The H(1)-O(4) bond length is 0.99 Å. In the second H site, H(2) is bonded in a distorted single-bond geometry to one O(10) and one O(11) atom. The H(2)-O(10) bond length is 1.01 Å. The H(2)-O(11) bond length is 1.67 Å. In the third H site, H(3) is bonded in a single-bond geometry to one N(2) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one N(2) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one N(2) and one O(9) atom. The H(5)-O(9) bond length is 1.69 Å. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(1) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(3) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(5) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(6) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(7) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(9) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(10) atom. In the thirteenth H site, H(13) is bonded in a single-bond geometry to one C(10) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate 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 150 degrees geometry to one Zn(2) and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Zn(2) and one P(1) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one C(1) and one H(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Zn(1) and one C(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Zn(1) and one C(2) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Zn(2) and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Zn(3) and one P(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Zn(3), one P(2), and one H(5) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Zn(1), one C(3), and one H(2) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Zn(1), one C(4), and one H(2) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one Zn(3) and one C(4) atom. Linkers: 1 [O]C(=O)[C@H](O)P([O])([O])=O ,1 [O]C(=O)[C@@H](O)P([O])([O])=O. Metal clusters: 5 [Zn]. The MOF has largest included sphere 2.17 A, density 2.36 g/cm3, surface area 2809.95 m2/g, accessible volume 0.07 cm3/g