ZnC3P2NH11O7 crystallizes in the triclinic P-1 space group. Zn(1) is bonded to one O(1), one O(3), one O(4), and one O(6) atom to form ZnO4 tetrahedra that share  a cornercorner with one P(2)CO3 tetrahedra and corners with two equivalent P(1)CO3 tetrahedra. The Zn(1)-O(1) bond length is 1.97 Å. The Zn(1)-O(3) bond length is 1.98 Å. The Zn(1)-O(4) bond length is 1.94 Å. The Zn(1)-O(6) bond length is 1.93 Å. There are three inequivalent C sites. In the first C site, C(1) is bonded to one P(2), one N(1), one H(2), and one H(3) atom to form distorted CPH2N tetrahedra that share  a cornercorner with one C(3)H3N tetrahedra and  a cornercorner with one C(2)PH2N tetrahedra. The C(1)-P(2) bond length is 1.83 Å. The C(1)-N(1) bond length is 1.50 Å. The C(1)-H(2) bond length is 1.10 Å. The C(1)-H(3) bond length is 1.10 Å. In the second C site, C(2) is bonded to one P(1), one N(1), one H(4), and one H(5) atom to form distorted CPH2N tetrahedra that share  a cornercorner with one C(3)H3N tetrahedra and  a cornercorner with one C(1)PH2N tetrahedra. The C(2)-P(1) bond length is 1.83 Å. The C(2)-N(1) bond length is 1.50 Å. The C(2)-H(4) bond length is 1.10 Å. The C(2)-H(5) bond length is 1.10 Å. In the third C site, C(3) is bonded to one N(1), one H(6), one H(7), and one H(8) atom to form corner-sharing CH3N tetrahedra. The C(3)-N(1) bond length is 1.50 Å. The C(3)-H(6) bond length is 1.09 Å. The C(3)-H(7) bond length is 1.09 Å. The C(3)-H(8) bond length is 1.09 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to one C(2), one O(2), one O(3), and one O(4) atom to form PCO3 tetrahedra that share  a cornercorner with one N(1)HC3 tetrahedra and corners with two equivalent Zn(1)O4 tetrahedra. The P(1)-O(2) bond length is 1.52 Å. The P(1)-O(3) bond length is 1.56 Å. The P(1)-O(4) bond length is 1.54 Å. In the second P site, P(2) is bonded to one C(1), one O(5), one O(6), and one O(7) atom to form distorted PCO3 tetrahedra that share  a cornercorner with one Zn(1)O4 tetrahedra and  a cornercorner with one N(1)HC3 tetrahedra. The P(2)-O(5) bond length is 1.52 Å. The P(2)-O(6) bond length is 1.53 Å. The P(2)-O(7) bond length is 1.56 Å. N(1) is bonded to one C(1), one C(2), one C(3), and one H(1) atom to form NHC3 tetrahedra that share  a cornercorner with one P(1)CO3 tetrahedra and  a cornercorner with one P(2)CO3 tetrahedra. The N(1)-H(1) bond length is 1.06 Å. There are eleven inequivalent H sites. In the first H site, H(1) is bonded in a distorted single-bond geometry to one N(1) and one O(5) atom. The H(1)-O(5) bond length is 1.66 Å. 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(1) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(2) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(2) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(3) 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(3) atom. In the ninth H site, H(9) is bonded in a linear geometry to one O(1) and one O(3) atom. The H(9)-O(1) bond length is 1.00 Å. The H(9)-O(3) bond length is 1.60 Å. In the tenth H site, H(10) is bonded in a linear geometry to one O(1) and one O(5) atom. The H(10)-O(1) bond length is 1.01 Å. The H(10)-O(5) bond length is 1.60 Å. In the eleventh H site, H(11) is bonded in a linear geometry to one O(2) and one O(7) atom. The H(11)-O(2) bond length is 1.39 Å. The H(11)-O(7) bond length is 1.08 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Zn(1), one H(10), and one H(9) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one P(1) and one H(11) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Zn(1), one P(1), and one H(9) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Zn(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one P(2), one H(1), and one H(10) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Zn(1) and one P(2) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one P(2) and one H(11) atom. Linkers: 1 C[NH](CP(=O)([O])O)CP(=O)([O])[O] ,1 C[NH](CP(=O)(O)[O])CP(=O)([O])[O]. Metal clusters: 1 O.O.[O]P(O)O[Zn]1OP([O])O[Zn](OP([O])O)OP([O])O1. The MOF has largest included sphere 1.68 A, density 2.19 g/cm3, surface area 3555.42 m2/g, accessible volume 0.07 cm3/g