CuH8(C2N)4(C2H)8 is Indium-derived structured and crystallizes in the trigonal P3_121 space group. The structure is zero-dimensional and consists of eighteen hexa-1,5-diene-3-yne, 2,5-dimethyl- molecules and nine CuH8(C2N)4 clusters. In each CuH8(C2N)4 cluster, Cu(1) is bonded in a rectangular see-saw-like geometry to one N(1), one N(2), one N(3), and one N(4) atom. The Cu(1)-N(1) bond length is 2.04 Å. The Cu(1)-N(2) bond length is 2.00 Å. The Cu(1)-N(3) bond length is 2.02 Å. The Cu(1)-N(4) bond length is 2.05 Å. There are eight 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 0.93 Å. In the second C site, C(5) is bonded in a distorted bent 120 degrees geometry to one N(1) and one H(4) atom. The C(5)-N(1) bond length is 1.28 Å. The C(5)-H(4) bond length is 0.93 Å. In the third C site, C(7) is bonded in a distorted bent 120 degrees geometry to one N(2) and one H(5) atom. The C(7)-N(2) bond length is 1.36 Å. The C(7)-H(5) bond length is 0.93 Å. In the fourth C site, C(11) is bonded in a distorted bent 120 degrees geometry to one N(2) and one H(8) atom. The C(11)-N(2) bond length is 1.32 Å. The C(11)-H(8) bond length is 0.93 Å. In the fifth C site, C(13) is bonded in a distorted bent 120 degrees geometry to one N(3) and one H(9) atom. The C(13)-N(3) bond length is 1.30 Å. The C(13)-H(9) bond length is 0.93 Å. In the sixth C site, C(17) is bonded in a distorted bent 120 degrees geometry to one N(3) and one H(12) atom. The C(17)-N(3) bond length is 1.32 Å. The C(17)-H(12) bond length is 0.93 Å. In the seventh C site, C(19) is bonded in a distorted bent 120 degrees geometry to one N(4) and one H(13) atom. The C(19)-N(4) bond length is 1.34 Å. The C(19)-H(13) bond length is 0.93 Å. In the eighth C site, C(23) is bonded in a distorted bent 120 degrees geometry to one N(4) and one H(16) atom. The C(23)-N(4) bond length is 1.33 Å. The C(23)-H(16) bond length is 0.93 Å. There are four inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Cu(1), one C(1), and one C(5) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Cu(1), one C(11), and one C(7) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Cu(1), one C(13), and one C(17) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one Cu(1), one C(19), and one C(23) atom. There are eight 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(5) atom. In the third H site, H(5) is bonded in a single-bond geometry to one C(7) atom. In the fourth H site, H(8) is bonded in a single-bond geometry to one C(11) atom. In the fifth H site, H(9) is bonded in a single-bond geometry to one C(13) atom. In the sixth H site, H(12) is bonded in a single-bond geometry to one C(17) atom. In the seventh H site, H(13) is bonded in a single-bond geometry to one C(19) atom. In the eighth H site, H(16) is bonded in a single-bond geometry to one C(23) atom. Linkers: 12 C(#Cc1ccncc1)c1ccncc1. Metal clusters: 9 [Cu]. The MOF has largest included sphere 4.77 A, density 0.97 g/cm3, surface area 5278.96 m2/g, accessible volume 0.56 cm3/g