(CH)6CuC4N2H2Se2Br crystallizes in the tetragonal I4_1/acd space group. The structure consists of one hundred and ninety-two 02329_fluka molecules inside a CuC4N2H2Se2Br framework. In each CuC4N2H2Se2Br framework, Cu(1) is bonded in a 4-coordinate geometry to one N(1), one N(2), one Se(1), one Se(2), and two equivalent Br(1) atoms. The Cu(1)-N(1) bond length is 2.02 Å. The Cu(1)-N(2) bond length is 2.04 Å. The Cu(1)-Se(1) bond length is 3.09 Å. The Cu(1)-Se(2) bond length is 3.07 Å. There is one shorter (2.50 Å) and one longer (2.63 Å) Cu(1)-Br(1) bond length. There are four inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one N(1) and one Se(1) atom. The C(1)-N(1) bond length is 1.34 Å. The C(1)-Se(1) bond length is 1.92 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 1.36 Å. The C(5)-H(4) bond length is 0.95 Å. In the third C site, C(6) is bonded in a distorted single-bond geometry to one N(2) and one Se(2) atom. The C(6)-N(2) bond length is 1.33 Å. The C(6)-Se(2) bond length is 1.91 Å. In the fourth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one N(2) and one H(8) atom. The C(10)-N(2) bond length is 1.33 Å. The C(10)-H(8) bond length is 0.95 Å. There are two inequivalent N sites. In the first N site, N(2) is bonded in a trigonal planar geometry to one Cu(1), one C(10), and one C(6) atom. In the second N site, 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(4) is bonded in a single-bond geometry to one C(5) atom. In the second H site, H(8) is bonded in a single-bond geometry to one C(10) atom. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a 3-coordinate geometry to one Cu(1), one C(1), and one Se(1) atom. The Se(1)-Se(1) bond length is 2.33 Å. In the second Se site, Se(2) is bonded in a 3-coordinate geometry to one Cu(1), one C(6), and one Se(2) atom. The Se(2)-Se(2) bond length is 2.33 Å. Br(1) is bonded in a 2-coordinate geometry to two equivalent Cu(1) atoms. Linkers: 32 c1ccc([Se][Se]c2ccccn2)nc1. Metal clusters: 16 Br[Cu][Cu]Br. The MOF has largest included sphere 4.01 A, density 2.02 g/cm3, surface area 3209.38 m2/g, accessible volume 0.19 cm3/g