CoC3P2NH9O7 crystallizes in the triclinic P-1 space group. Co(1) is bonded to one O(1), one O(3), one O(5), one O(7), and two equivalent O(4) atoms to form distorted CoO6 octahedra that share  a cornercorner with one C(1)P2CO tetrahedra, corners with two equivalent P(1)CO3 tetrahedra, corners with three equivalent P(2)CO3 tetrahedra, and  an edgeedge with one Co(1)O6 octahedra. The Co(1)-O(1) bond length is 2.04 Å. The Co(1)-O(3) bond length is 2.18 Å. The Co(1)-O(5) bond length is 2.02 Å. The Co(1)-O(7) bond length is 2.35 Å. There is one shorter (2.02 Å) and one longer (2.16 Å) Co(1)-O(4) bond length. There are three inequivalent C sites. In the first C site, C(1) is bonded to one C(2), one P(1), one P(2), and one O(7) atom to form distorted CP2CO tetrahedra that share  a cornercorner with one Co(1)O6 octahedra. The corner-sharing octahedral tilt angles are 79°. The C(1)-C(2) bond length is 1.54 Å. The C(1)-P(1) bond length is 1.84 Å. The C(1)-P(2) bond length is 1.86 Å. The C(1)-O(7) bond length is 1.45 Å. In the second C site, C(2) is bonded in a water-like geometry to one C(1), one H(5), and one H(6) atom. The C(2)-H(5) bond length is 1.10 Å. The C(2)-H(6) bond length is 1.10 Å. In the third C site, C(3) is bonded in a distorted trigonal non-coplanar geometry to one N(1), one H(7), and one H(8) atom. The C(3)-N(1) bond length is 1.48 Å. The C(3)-H(7) bond length is 1.09 Å. The C(3)-H(8) 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 distorted PCO3 tetrahedra that share corners with two equivalent Co(1)O6 octahedra and  a cornercorner with one P(2)CO3 tetrahedra. The corner-sharing octahedral tilt angles range from 46-63°. The P(1)-O(1) bond length is 1.53 Å. The P(1)-O(2) bond length is 1.60 Å. The P(1)-O(3) bond length is 1.53 Å. In the second P site, P(2) is bonded to one C(1), one O(4), one O(5), and one O(6) atom to form distorted PCO3 tetrahedra that share corners with three equivalent Co(1)O6 octahedra and  a cornercorner with one P(1)CO3 tetrahedra. The corner-sharing octahedral tilt angles range from 38-64°. The P(2)-O(4) bond length is 1.55 Å. The P(2)-O(5) bond length is 1.54 Å. The P(2)-O(6) bond length is 1.53 Å. N(1) is bonded in a distorted tetrahedral geometry to one C(3), one H(1), one H(2), and one H(4) atom. The N(1)-H(1) bond length is 1.05 Å. The N(1)-H(2) bond length is 1.03 Å. The N(1)-H(4) bond length is 1.06 Å. There are nine inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one N(1) atom. In the third H site, H(3) is bonded in a linear geometry to one O(2) and one O(3) atom. The H(3)-O(2) bond length is 1.03 Å. The H(3)-O(3) bond length is 1.58 Å. In the fourth H site, H(4) is bonded in a distorted single-bond geometry to one N(1) and one O(6) atom. The H(4)-O(6) bond length is 1.64 Å. 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(2) 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 distorted single-bond geometry to one O(6) and one O(7) atom. The H(9)-O(6) bond length is 1.61 Å. The H(9)-O(7) bond length is 1.01 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Co(1) and one P(1) atom. In the second O site, O(2) is bonded in a water-like geometry to one P(1) and one H(3) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Co(1), one P(1), and one H(3) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Co(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to one Co(1) and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one P(2), one H(4), and one H(9) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Co(1), one C(1), and one H(9) atom. Linkers: 1 [NH3]CCC(P(=O)(O)[O])(P(=O)([O])[O])O ,1 [NH3]CCC(P(=O)([O])O)(P(=O)([O])[O])O. Metal clusters: 2 [Co]. The MOF has largest included sphere 1.72 A, density 2.46 g/cm3, surface area 2294.59 m2/g, accessible volume 0.04 cm3/g