MnC12H6(NO2)2 crystallizes in the monoclinic C2/c space group. Mn(1) is bonded in an octahedral geometry to two equivalent N(1), two equivalent O(1), and two equivalent O(2) atoms. Both Mn(1)-N(1) bond lengths are 2.33 Å. Both Mn(1)-O(1) bond lengths are 2.16 Å. Both Mn(1)-O(2) bond lengths are 2.13 Å. There are six inequivalent C sites. In the first C site, C(2) is bonded in a distorted single-bond geometry to one C(1), one C(3), and one H(1) atom. The C(2)-C(1) bond length is 1.40 Å. The C(2)-C(3) bond length is 1.39 Å. The C(2)-H(1) bond length is 1.09 Å. In the second C site, C(3) is bonded in a trigonal planar geometry to one C(2), one C(4), and one C(6) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-C(6) bond length is 1.50 Å. In the third C site, C(4) is bonded in a distorted single-bond geometry to one C(3) and one H(2) atom. The C(4)-H(2) bond length is 1.09 Å. In the fourth C site, C(5) is bonded in a distorted trigonal planar geometry to one N(1) and one H(3) atom. The C(5)-N(1) bond length is 1.35 Å. The C(5)-H(3) bond length is 1.09 Å. In the fifth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(1), and one O(2) atom. The C(6)-O(1) bond length is 1.27 Å. The C(6)-O(2) bond length is 1.28 Å. In the sixth C site, C(1) is bonded in a distorted trigonal planar geometry to one C(1), one C(2), and one N(1) atom. The C(1)-C(1) bond length is 1.48 Å. The C(1)-N(1) bond length is 1.35 Å. N(1) is bonded in a trigonal planar geometry to one Mn(1), one C(1), and one C(5) 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(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(5) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Mn(1) and one C(6) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Mn(1) and one C(6) atom. Linkers: 2 [O]C(=O)c1ccnc(-c2cc(C([O])=O)ccn2)c1. Metal clusters: 2 [Mn]. RCSR code: sql. The MOF has largest included sphere 3.59 A, density 1.66 g/cm3, surface area 3244.67 m2/g, accessible volume 0.11 cm3/g