CuC5N2H5ClCH3 crystallizes in the orthorhombic P2_12_12_1 space group. The structure consists of four 02329_fluka molecules inside a CuC5N2H5Cl framework. In the CuC5N2H5Cl framework, Cu(1) is bonded to one N(1), one N(2), and two equivalent Cl(1) atoms to form distorted corner-sharing CuN2Cl2 tetrahedra. The Cu(1)-N(1) bond length is 1.95 Å. The Cu(1)-N(2) bond length is 1.95 Å. There is one shorter (2.39 Å) and one longer (2.44 Å) Cu(1)-Cl(1) bond length. There are five inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one C(5), and one N(1) atom. The C(1)-C(2) bond length is 1.39 Å. The C(1)-C(5) bond length is 1.49 Å. The C(1)-N(1) bond length is 1.36 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(1), one N(2), and one H(1) atom. The C(2)-N(2) bond length is 1.35 Å. The C(2)-H(1) bond length is 1.09 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(4), one N(2), and one H(2) atom. The C(3)-C(4) bond length is 1.38 Å. The C(3)-N(2) bond length is 1.35 Å. The C(3)-H(2) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a distorted trigonal planar geometry to one C(3), one N(1), and one H(3) atom. The C(4)-N(1) bond length is 1.36 Å. The C(4)-H(3) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a distorted water-like geometry to one C(1), one H(4), and one H(5) atom. The C(5)-H(4) bond length is 1.10 Å. The C(5)-H(5) bond length is 1.10 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(2), and one C(3) 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(4) atom. There are five inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(3) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(4) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(5) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(5) atom. Cl(1) is bonded in a bent 120 degrees geometry to two equivalent Cu(1) atoms. Linkers: 4 CCc1cnccn1. Metal clusters: 4 [Cu]. The MOF has largest included sphere 1.93 A, density 1.87 g/cm3, surface area 4346.74 m2/g, accessible volume 0.12 cm3/g