V2Cd2C2N2H8O7 crystallizes in the orthorhombic Pnnm space group. V(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form VO4 tetrahedra that share corners with three equivalent Cd(1)NO5 octahedra,  a cornercorner with one V(1)O4 tetrahedra, and  an edgeedge with one Cd(1)NO5 octahedra. The corner-sharing octahedral tilt angles range from 40-55°. The V(1)-O(2) bond length is 1.68 Å. The V(1)-O(3) bond length is 1.79 Å. Both V(1)-O(1) bond lengths are 1.72 Å. Cd(1) is bonded to one N(1), one O(2), and four equivalent O(1) atoms to form distorted CdNO5 octahedra that share corners with four equivalent Cd(1)NO5 octahedra, corners with three equivalent V(1)O4 tetrahedra, and  an edgeedge with one V(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 61°. The Cd(1)-N(1) bond length is 2.27 Å. The Cd(1)-O(2) bond length is 2.25 Å. There are two shorter (2.28 Å) and two longer (2.52 Å) Cd(1)-O(1) bond lengths. C(1) is bonded in a distorted trigonal non-coplanar geometry to one N(1) and two equivalent H(1) atoms. The C(1)-N(1) bond length is 1.47 Å. Both C(1)-H(1) bond lengths are 1.10 Å. N(1) is bonded in a 4-coordinate geometry to one Cd(1), one C(1), and two equivalent H(2) atoms. Both N(1)-H(2) bond lengths are 1.03 Å. There are two 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 N(1) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one V(1) and two equivalent Cd(1) atoms. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one V(1) and one Cd(1) atom. In the third O site, O(3) is bonded in a linear geometry to two equivalent V(1) atoms. Linkers: 2 NCCN. Metal clusters: 4 [V] ,4 [Cd]. The MOF has largest included sphere 1.82 A, density 3.44 g/cm3, surface area 2015.62 m2/g, accessible volume 0.02 cm3/g