Zn2C8PNH6O8 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(1), one O(2), one O(5), and two equivalent O(4) atoms to form ZnO5 trigonal bipyramids that share corners with four equivalent P(1)O4 tetrahedra, corners with two equivalent Zn(2)NO4 trigonal bipyramids, and  an edgeedge with one Zn(1)O5 trigonal bipyramid. The Zn(1)-O(1) bond length is 1.98 Å. The Zn(1)-O(2) bond length is 2.12 Å. The Zn(1)-O(5) bond length is 2.00 Å. There is one shorter (1.99 Å) and one longer (2.24 Å) Zn(1)-O(4) bond length. In the second Zn site, Zn(2) is bonded to one N(1), one O(1), one O(2), one O(3), and one O(6) atom to form ZnNO4 trigonal bipyramids that share corners with three equivalent P(1)O4 tetrahedra and corners with two equivalent Zn(1)O5 trigonal bipyramids. The Zn(2)-N(1) bond length is 2.25 Å. The Zn(2)-O(1) bond length is 2.20 Å. The Zn(2)-O(2) bond length is 2.02 Å. The Zn(2)-O(3) bond length is 1.95 Å. The Zn(2)-O(6) bond length is 2.00 Å. There are eight inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(5), and one O(6) atom. The C(1)-C(2) bond length is 1.50 Å. The C(1)-O(5) bond length is 1.28 Å. The C(1)-O(6) bond length is 1.27 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(7) atom. The C(2)-C(3) bond length is 1.42 Å. The C(2)-C(7) bond length is 1.40 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(2), one C(4), and one N(1) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-N(1) bond length is 1.41 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(3), one C(5), and one H(1) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-H(1) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(4), one C(6), and one C(8) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-C(8) bond length is 1.48 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(5) and one H(2) atom. The C(6)-H(2) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(2) and one H(3) atom. The C(7)-H(3) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(7), and one O(8) atom. The C(8)-O(7) bond length is 1.32 Å. The C(8)-O(8) bond length is 1.25 Å. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with three equivalent Zn(2)NO4 trigonal bipyramids and corners with four equivalent Zn(1)O5 trigonal bipyramids. The P(1)-O(1) bond length is 1.56 Å. The P(1)-O(2) bond length is 1.57 Å. The P(1)-O(3) bond length is 1.53 Å. The P(1)-O(4) bond length is 1.56 Å. N(1) is bonded in a 4-coordinate geometry to one Zn(2), one C(3), one H(4), and one H(5) atom. The N(1)-H(4) bond length is 1.02 Å. The N(1)-H(5) bond length is 1.03 Å. There are six inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(4) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(6) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(7) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one N(1) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one N(1) atom. In the sixth H site, H(6) is bonded in a linear geometry to one O(7) and one O(8) atom. The H(6)-O(7) bond length is 1.04 Å. The H(6)-O(8) bond length is 1.50 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 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 distorted trigonal planar geometry to one Zn(1), one Zn(2), and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Zn(2) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Zn(1) and one P(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(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Zn(2) and one C(1) atom. In the seventh O site, O(7) is bonded in a water-like geometry to one C(8) and one H(6) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one C(8) and one H(6) atom. Linkers: 4 Nc1cc(C(=O)O)ccc1C([O])=O. Metal clusters: 8 [Zn]. The MOF has largest included sphere 1.78 A, density 2.53 g/cm3, surface area 2721.45 m2/g, accessible volume 0.08 cm3/g