CuCd2C10N4H6(OCl)4 crystallizes in the monoclinic C2/c space group. Cu(1) is bonded to two equivalent N(1), two equivalent O(1), and two equivalent Cl(1) atoms to form distorted CuN2Cl2O2 octahedra that share corners with four equivalent Cd(1)NCl4O octahedra. The corner-sharing octahedral tilt angles range from 48-53°. Both Cu(1)-N(1) bond lengths are 1.99 Å. Both Cu(1)-O(1) bond lengths are 1.98 Å. Both Cu(1)-Cl(1) bond lengths are 2.72 Å. Cd(1) is bonded to one N(2), one O(2), one Cl(2), one Cl(3), and two equivalent Cl(1) atoms to form CdNCl4O octahedra that share corners with two equivalent Cu(1)N2Cl2O2 octahedra and edges with two equivalent Cd(1)NCl4O octahedra. The corner-sharing octahedral tilt angles range from 48-53°. The Cd(1)-N(2) bond length is 2.43 Å. The Cd(1)-O(2) bond length is 2.43 Å. The Cd(1)-Cl(2) bond length is 2.63 Å. The Cd(1)-Cl(3) bond length is 2.61 Å. There is one shorter (2.61 Å) and one longer (2.65 Å) Cd(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 1.50 Å. The C(1)-N(1) bond length is 1.35 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 1.34 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 1.40 Å. The C(3)-N(2) bond length is 1.34 Å. The C(3)-H(2) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one C(3), one N(1), and one H(3) atom. The C(4)-N(1) bond length is 1.34 Å. The C(4)-H(3) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(2) atom. The C(5)-O(1) bond length is 1.28 Å. The C(5)-O(2) bond length is 1.26 Å. There are two 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(4) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Cd(1), one C(2), and one C(3) atom. There are three 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. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(5) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Cd(1) and one C(5) atom. There are three inequivalent Cl sites. In the first Cl site, Cl(2) is bonded in an L-shaped geometry to two equivalent Cd(1) atoms. In the second Cl site, Cl(3) is bonded in an L-shaped geometry to two equivalent Cd(1) atoms. In the third Cl site, Cl(1) is bonded in a distorted trigonal planar geometry to one Cu(1) and two equivalent Cd(1) atoms. Linkers: 4 [O]C(=O)c1cnccn1. Metal clusters: 4 [Cd] ,2 [Cu]. The MOF has largest included sphere 2.50 A, density 2.46 g/cm3, surface area 2681.62 m2/g, accessible volume 0.10 cm3/g