AgC4H6(NO)2 crystallizes in the monoclinic P2/c space group. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to two equivalent N(1), two equivalent O(1), and two equivalent O(2) atoms to form AgN2O4 octahedra that share corners with two equivalent C(1)H2N2 tetrahedra, corners with two equivalent C(2)H2N2 tetrahedra, and corners with two equivalent C(3)H2N2 tetrahedra. Both Ag(1)-N(1) bond lengths are 2.37 Å. Both Ag(1)-O(1) bond lengths are 2.62 Å. Both Ag(1)-O(2) bond lengths are 2.57 Å. In the second Ag site, Ag(2) is bonded in a 4-coordinate geometry to two equivalent N(2) and two equivalent O(1) atoms. Both Ag(2)-N(2) bond lengths are 2.39 Å. Both Ag(2)-O(1) bond lengths are 2.45 Å. There are five inequivalent C sites. In the first C site, C(3) is bonded to one N(1), one N(2), one H(4), and one H(5) atom to form CH2N2 tetrahedra that share  a cornercorner with one Ag(1)N2O4 octahedra,  a cornercorner with one C(1)H2N2 tetrahedra,  a cornercorner with one C(4)H2N2 tetrahedra, and corners with two equivalent C(2)H2N2 tetrahedra. The corner-sharing octahedral tilt angles are 73°. The C(3)-N(1) bond length is 1.48 Å. The C(3)-N(2) bond length is 1.48 Å. The C(3)-H(4) bond length is 1.10 Å. The C(3)-H(5) bond length is 1.10 Å. In the second C site, C(4) is bonded to two equivalent N(2) and two equivalent H(6) atoms to form corner-sharing CH2N2 tetrahedra. Both C(4)-N(2) bond lengths are 1.48 Å. Both C(4)-H(6) bond lengths are 1.10 Å. In the third C site, C(5) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(5)-O(1) bond length is 1.28 Å. The C(5)-O(2) bond length is 1.26 Å. In the fourth C site, C(1) is bonded to two equivalent N(1) and two equivalent H(1) atoms to form CH2N2 tetrahedra that share corners with two equivalent Ag(1)N2O4 octahedra, corners with two equivalent C(2)H2N2 tetrahedra, and corners with two equivalent C(3)H2N2 tetrahedra. The corner-sharing octahedral tilt angles are 73°. Both C(1)-N(1) bond lengths are 1.48 Å. Both C(1)-H(1) bond lengths are 1.10 Å. In the fifth C site, C(2) is bonded to one N(1), one N(2), one H(2), and one H(3) atom to form CH2N2 tetrahedra that share  a cornercorner with one Ag(1)N2O4 octahedra,  a cornercorner with one C(1)H2N2 tetrahedra,  a cornercorner with one C(4)H2N2 tetrahedra, and corners with two equivalent C(3)H2N2 tetrahedra. The corner-sharing octahedral tilt angles are 63°. The C(2)-N(1) bond length is 1.48 Å. The C(2)-N(2) bond length is 1.48 Å. The C(2)-H(2) bond length is 1.10 Å. The C(2)-H(3) bond length is 1.10 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Ag(1), one C(1), one C(2), and one C(3) atom to form distorted corner-sharing NAgC3 tetrahedra. In the second N site, N(2) is bonded to one Ag(2), one C(2), one C(3), and one C(4) atom to form distorted corner-sharing NAgC3 tetrahedra. There are six inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(2) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(3) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(3) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(4) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Ag(1), one Ag(2), and one C(5) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Ag(1) and one C(5) atom. Linkers: 2 C1N2CN3CN1CN(C2)C3 ,2 [O]C(=O)C([O])=O. Metal clusters: 4 [Ag]. The MOF has largest included sphere 1.96 A, density 2.79 g/cm3, surface area 2319.60 m2/g, accessible volume 0.05 cm3/g