Zn3C4P2H10(N5O4)2 crystallizes in the monoclinic C2/c space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one N(1), one O(1), one O(3), and one O(4) atom to form ZnNO3 tetrahedra that share corners with three equivalent P(1)O4 tetrahedra. The Zn(1)-N(1) bond length is 2.03 Å. The Zn(1)-O(1) bond length is 1.99 Å. The Zn(1)-O(3) bond length is 1.93 Å. The Zn(1)-O(4) bond length is 1.96 Å. In the second Zn site, Zn(2) is bonded to two equivalent N(3) and two equivalent O(2) atoms to form ZnN2O2 tetrahedra that share corners with two equivalent P(1)O4 tetrahedra. Both Zn(2)-N(3) bond lengths are 1.97 Å. Both Zn(2)-O(2) bond lengths are 1.99 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one N(1), one N(2), and one N(4) atom. The C(1)-N(1) bond length is 1.36 Å. The C(1)-N(2) bond length is 1.34 Å. The C(1)-N(4) bond length is 1.35 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one N(1), one N(3), and one N(5) atom. The C(2)-N(1) bond length is 1.37 Å. The C(2)-N(3) bond length is 1.33 Å. The C(2)-N(5) bond length is 1.35 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  a cornercorner with one Zn(2)N2O2 tetrahedra and corners with three equivalent Zn(1)NO3 tetrahedra. 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 1.54 Å. The P(1)-O(4) bond length is 1.55 Å. There are five inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Zn(1), one C(1), and one C(2) atom. In the second N site, N(2) is bonded in a 2-coordinate geometry to one C(1), one N(3), and one H(1) atom. The N(2)-N(3) bond length is 1.38 Å. The N(2)-H(1) bond length is 1.04 Å. In the third N site, N(3) is bonded in a distorted trigonal planar geometry to one Zn(2), one C(2), and one N(2) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one C(1), one H(2), and one H(3) atom. The N(4)-H(2) bond length is 1.02 Å. The N(4)-H(3) bond length is 1.02 Å. In the fifth N site, N(5) is bonded in a distorted trigonal planar geometry to one C(2), one H(4), and one H(5) atom. The N(5)-H(4) bond length is 1.02 Å. The N(5)-H(5) bond length is 1.03 Å. There are five inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(2) and one O(2) atom. The H(1)-O(2) bond length is 1.74 Å. In the second H site, H(2) is bonded in a single-bond geometry to one N(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one N(4) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one N(5) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one N(5) atom. There are four inequivalent O sites. In the first O site, O(4) is bonded in a bent 120 degrees geometry to one Zn(1) and one P(1) atom. In the second O site, O(1) is bonded in a bent 120 degrees geometry to one Zn(1) and one P(1) atom. In the third O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Zn(2), one P(1), and one H(1) atom. In the fourth O site, O(3) is bonded in a bent 120 degrees geometry to one Zn(1) and one P(1) atom. Linkers: 2 N[C]1N=C(N)[N]N1 ,2 Nc1n[nH]c(N)n1. Metal clusters: 6 [Zn]. The MOF has largest included sphere 1.88 A, density 2.64 g/cm3, surface area 2874.27 m2/g, accessible volume 0.07 cm3/g