MnC8H4(N3O)2 crystallizes in the triclinic P-1 space group. Mn(1) is bonded in an octahedral geometry to one N(3), one N(4), one N(5), one N(6), one O(1), and one O(2) atom. The Mn(1)-N(3) bond length is 2.18 Å. The Mn(1)-N(4) bond length is 2.18 Å. The Mn(1)-N(5) bond length is 2.20 Å. The Mn(1)-N(6) bond length is 2.20 Å. The Mn(1)-O(1) bond length is 2.15 Å. The Mn(1)-O(2) bond length is 2.14 Å. There are eight inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(3), one N(1), and one O(1) atom. The C(1)-C(3) bond length is 1.45 Å. The C(1)-N(1) bond length is 1.36 Å. The C(1)-O(1) bond length is 1.26 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(4), one N(2), and one O(2) atom. The C(2)-C(4) bond length is 1.45 Å. The C(2)-N(2) bond length is 1.36 Å. The C(2)-O(2) bond length is 1.26 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(1), one C(5), and one C(7) atom. The C(3)-C(5) bond length is 1.39 Å. The C(3)-C(7) bond length is 1.39 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(2), one C(6), and one C(8) atom. The C(4)-C(6) bond length is 1.39 Å. The C(4)-C(8) bond length is 1.39 Å. In the fifth C site, C(5) is bonded in a distorted linear geometry to one C(3) and one N(3) atom. The C(5)-N(3) bond length is 1.17 Å. In the sixth C site, C(6) is bonded in a distorted linear geometry to one C(4) and one N(4) atom. The C(6)-N(4) bond length is 1.17 Å. In the seventh C site, C(7) is bonded in a distorted linear geometry to one C(3) and one N(5) atom. The C(7)-N(5) bond length is 1.18 Å. In the eighth C site, C(8) is bonded in a distorted linear geometry to one C(4) and one N(6) atom. The C(8)-N(6) bond length is 1.18 Å. There are six inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one C(1), one H(1), and one H(3) atom. The N(1)-H(1) bond length is 1.01 Å. The N(1)-H(3) bond length is 1.02 Å. In the second N site, N(2) is bonded in a trigonal planar geometry to one C(2), one H(2), and one H(4) atom. The N(2)-H(2) bond length is 1.01 Å. The N(2)-H(4) bond length is 1.02 Å. In the third N site, N(3) is bonded in a linear geometry to one Mn(1) and one C(5) atom. In the fourth N site, N(4) is bonded in a linear geometry to one Mn(1) and one C(6) atom. In the fifth N site, N(5) is bonded in a distorted bent 150 degrees geometry to one Mn(1) and one C(7) atom. In the sixth N site, N(6) is bonded in a distorted bent 150 degrees geometry to one Mn(1) and one C(8) atom. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one N(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one N(1) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one N(2) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Mn(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Mn(1) and one C(2) atom. Linkers: 4 N#C[C](C#N)C(N)=O. Metal clusters: 2 [Mn]. The MOF has largest included sphere 2.75 A, density 1.56 g/cm3, surface area 4175.83 m2/g, accessible volume 0.20 cm3/g