ZnC4P2H10(N3O4)2 crystallizes in the orthorhombic Pbcn space group. Zn(1) is bonded to two equivalent N(1), two equivalent N(2), and two equivalent O(1) atoms to form ZnN4O2 octahedra that share corners with two equivalent P(1)O4 tetrahedra. Both Zn(1)-N(1) bond lengths are 2.15 Å. Both Zn(1)-N(2) bond lengths are 2.15 Å. Both Zn(1)-O(1) bond lengths are 2.13 Å. There are two inequivalent C sites. In the first C site, C(2) is bonded in a trigonal planar geometry to one N(1), one N(2), and one H(2) atom. The C(2)-N(1) bond length is 1.36 Å. The C(2)-N(2) bond length is 1.33 Å. The C(2)-H(2) bond length is 1.09 Å. In the second C site, C(1) is bonded in a trigonal planar geometry to one N(1), one N(3), and one H(1) atom. The C(1)-N(1) bond length is 1.34 Å. The C(1)-N(3) bond length is 1.33 Å. The C(1)-H(1) bond length is 1.08 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(1)N4O2 octahedra. The corner-sharing octahedral tilt angles are 28°. The P(1)-O(1) bond length is 1.51 Å. The P(1)-O(2) bond length is 1.58 Å. The P(1)-O(3) bond length is 1.54 Å. The P(1)-O(4) bond length is 1.60 Å. There are three inequivalent N sites. In the first N site, N(1) is bonded in a distorted 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 3-coordinate geometry to one Zn(1), one C(2), and one N(3) atom. The N(2)-N(3) bond length is 1.36 Å. In the third N site, N(3) is bonded in a 2-coordinate geometry to one C(1), one N(2), and one H(3) atom. The N(3)-H(3) bond length is 1.04 Å. There are five inequivalent H sites. In the first H site, H(4) is bonded in a linear geometry to one O(2) and one O(3) atom. The H(4)-O(2) bond length is 1.03 Å. The H(4)-O(3) bond length is 1.56 Å. In the second H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the third H site, H(5) is bonded in a linear geometry to one O(3) and one O(4) atom. The H(5)-O(3) bond length is 1.50 Å. The H(5)-O(4) bond length is 1.04 Å. In the fourth H site, H(2) is bonded in a single-bond geometry to one C(2) atom. In the fifth H site, H(3) is bonded in a single-bond geometry to one N(3) atom. There are four inequivalent O sites. In the first O site, O(2) is bonded in a bent 120 degrees geometry to one P(1) and one H(4) atom. In the second O site, O(1) is bonded in a bent 150 degrees geometry to one Zn(1) and one P(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one P(1), one H(4), and one H(5) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one P(1) and one H(5) atom. Linkers: 8 [CH]1N=C[N]N1. Metal clusters: 4 O=P(O)(O)O[Zn]OP(=O)(O)O. The MOF has largest included sphere 2.40 A, density 2.11 g/cm3, surface area 3418.52 m2/g, accessible volume 0.09 cm3/g