CuH8(C5N)4(CH)8 crystallizes in the tetragonal I4_1/a space group. The structure consists of thirty-two 02329_fluka molecules inside a CuH8(C5N)4 framework. In the CuH8(C5N)4 framework, Cu(1) is bonded in a tetrahedral geometry to four equivalent N(1) atoms. All Cu(1)-N(1) bond lengths are 2.07 Å. There are five inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one N(1) and one H(1) atom. The C(1)-N(1) bond length is 1.33 Å. The C(1)-H(1) bond length is 0.95 Å. In the second C site, C(4) is bonded in a distorted single-bond geometry to one C(5) and one H(4) atom. The C(4)-C(5) bond length is 1.37 Å. The C(4)-H(4) bond length is 0.95 Å. In the third C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one C(6), and one N(1) atom. The C(5)-C(6) bond length is 1.43 Å. The C(5)-N(1) bond length is 1.37 Å. In the fourth C site, C(6) is bonded in a linear geometry to one C(5) and one C(7) atom. The C(6)-C(7) bond length is 1.20 Å. In the fifth C site, C(7) is bonded in a linear geometry to one C(6) and one C(7) atom. The C(7)-C(7) bond length is 1.37 Å. N(1) is bonded in a trigonal planar geometry to one Cu(1), one C(1), and one C(5) atom. 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(4) is bonded in a single-bond geometry to one C(4) atom. Linkers: 9 C(C#Cc1ccccn1)#Cc1ccccn1. Metal clusters: 4 [Cu]. The MOF has largest included sphere 4.23 A, density 1.08 g/cm3, surface area 5612.48 m2/g, accessible volume 0.31 cm3/g