CuC4N2H8(OF)2 crystallizes in the monoclinic P2_1/c space group. Cu(1) is bonded in an octahedral geometry to two equivalent N(1), two equivalent O(1), and two equivalent F(1) atoms. Both Cu(1)-N(1) bond lengths are 2.03 Å. Both Cu(1)-O(1) bond lengths are 1.99 Å. Both Cu(1)-F(1) bond lengths are 2.36 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one N(1), and one H(1) atom. The C(1)-C(2) bond length is 1.39 Å. The C(1)-N(1) bond length is 1.34 Å. The C(1)-H(1) bond length is 1.09 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(1), one N(1), and one H(2) atom. The C(2)-N(1) bond length is 1.34 Å. The C(2)-H(2) bond length is 1.09 Å. N(1) is bonded in a trigonal planar geometry to one Cu(1), one C(1), and one C(2) atom. There are four 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 distorted linear geometry to one O(1) and one F(1) atom. The H(3)-O(1) bond length is 1.02 Å. The H(3)-F(1) bond length is 1.54 Å. In the fourth H site, H(4) is bonded in a linear geometry to one O(1) and one F(1) atom. The H(4)-O(1) bond length is 1.02 Å. The H(4)-F(1) bond length is 1.49 Å. O(1) is bonded in a distorted trigonal non-coplanar geometry to one Cu(1), one H(3), and one H(4) atom. F(1) is bonded in a 3-coordinate geometry to one Cu(1), one H(3), and one H(4) atom. Linkers: 1 c1cnccn1. Metal clusters: 1 O.O.[Cu].[F].[F] ,1 [Cu]. The MOF has largest included sphere 1.88 A, density 2.08 g/cm3, surface area 3529.39 m2/g, accessible volume 0.10 cm3/g