Mn2C6N14H4O crystallizes in the orthorhombic Pbcm space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in an octahedral geometry to two equivalent N(1), two equivalent N(3), and two equivalent N(5) atoms. Both Mn(1)-N(1) bond lengths are 2.23 Å. Both Mn(1)-N(3) bond lengths are 2.23 Å. Both Mn(1)-N(5) bond lengths are 2.28 Å. In the second Mn site, Mn(2) is bonded to two equivalent N(2), two equivalent N(4), and two equivalent O(1) atoms to form corner-sharing MnN4O2 octahedra. The corner-sharing octahedral tilt angles are 73°. Both Mn(2)-N(2) bond lengths are 2.26 Å. Both Mn(2)-N(4) bond lengths are 2.22 Å. There is one shorter (2.25 Å) and one longer (2.34 Å) Mn(2)-O(1) bond length. There are three inequivalent C sites. In the first C site, C(2) is bonded in a distorted trigonal planar geometry to one C(3), one N(2), and one N(5) atom. The C(2)-C(3) bond length is 1.45 Å. The C(2)-N(2) bond length is 1.34 Å. The C(2)-N(5) bond length is 1.36 Å. In the second C site, C(3) is bonded in a distorted water-like geometry to one C(2), one N(1), and one N(6) atom. The C(3)-N(1) bond length is 1.35 Å. The C(3)-N(6) bond length is 1.34 Å. In the third C site, C(1) is bonded in a trigonal planar geometry to one N(4), one N(5), and one H(1) atom. The C(1)-N(4) bond length is 1.34 Å. The C(1)-N(5) bond length is 1.35 Å. The C(1)-H(1) bond length is 1.09 Å. There are seven inequivalent N sites. In the first N site, N(3) is bonded in a trigonal planar geometry to one Mn(1), one N(1), and one N(7) atom. The N(3)-N(1) bond length is 1.34 Å. The N(3)-N(7) bond length is 1.32 Å. In the second N site, N(7) is bonded in a water-like geometry to one N(3) and one N(6) atom. The N(7)-N(6) bond length is 1.34 Å. In the third N site, N(4) is bonded in a 3-coordinate geometry to one Mn(2), one C(1), and one N(2) atom. The N(4)-N(2) bond length is 1.38 Å. In the fourth N site, N(1) is bonded in a 3-coordinate geometry to one Mn(1), one C(3), and one N(3) atom. In the fifth N site, N(5) is bonded in a distorted trigonal planar geometry to one Mn(1), one C(1), and one C(2) atom. In the sixth N site, N(2) is bonded in a 3-coordinate geometry to one Mn(2), one C(2), and one N(4) atom. In the seventh N site, N(6) is bonded in a distorted trigonal planar geometry to one C(3), one N(7), and one H(2) atom. The N(6)-H(2) bond length is 1.62 Å. There are two 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(2) is bonded in a distorted single-bond geometry to one N(6) and one O(1) atom. The H(2)-O(1) bond length is 1.03 Å. O(1) is bonded in a distorted water-like geometry to two equivalent Mn(2) and two equivalent H(2) atoms. Linkers: 4 N1=NN=C([N]1)C1=[N]=CN=N1 ,4 C1=NN=C(C2=NN=N[N]2)[N]1. Metal clusters: 8 [Mn]. The MOF has largest included sphere 4.01 A, density 1.85 g/cm3, surface area 2847.30 m2/g, accessible volume 0.12 cm3/g