MnC5N2H8O5CH2 crystallizes in the orthorhombic Imm2 space group. The structure consists of four 02329_fluka molecules inside a MnC5N2H8O5 framework. In the MnC5N2H8O5 framework, Mn(1) is bonded to one N(1), one O(1), two equivalent O(2), and two equivalent O(3) atoms to form MnNO5 octahedra that share  a cornercorner with one C(5)H2N2 tetrahedra and corners with two equivalent C(3)H2N2 tetrahedra. The Mn(1)-N(1) bond length is 2.31 Å. The Mn(1)-O(1) bond length is 2.24 Å. Both Mn(1)-O(2) bond lengths are 2.17 Å. Both Mn(1)-O(3) bond lengths are 2.16 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(2) and one O(3) atom. The C(1)-O(2) bond length is 1.28 Å. The C(1)-O(3) bond length is 1.27 Å. In the second C site, C(3) is bonded to one N(1), one N(2), one H(4), and one H(5) atom to form CH2N2 tetrahedra that share  a cornercorner with one Mn(1)NO5 octahedra,  a cornercorner with one C(4)H2N2 tetrahedra,  a cornercorner with one C(5)H2N2 tetrahedra, and corners with two equivalent C(3)H2N2 tetrahedra. The corner-sharing octahedral tilt angles are 68°. The C(3)-N(1) bond length is 1.50 Å. The C(3)-N(2) bond length is 1.46 Å. The C(3)-H(4) bond length is 1.10 Å. The C(3)-H(5) bond length is 1.10 Å. In the third C site, C(5) is bonded to two equivalent N(1) and two equivalent H(7) atoms to form CH2N2 tetrahedra that share corners with two equivalent Mn(1)NO5 octahedra and corners with four equivalent C(3)H2N2 tetrahedra. The corner-sharing octahedral tilt angles are 70°. Both C(5)-N(1) bond lengths are 1.48 Å. Both C(5)-H(7) bond lengths are 1.10 Å. In the fourth C site, C(4) is bonded to two equivalent N(2) and two equivalent H(6) atoms to form corner-sharing CH2N2 tetrahedra. Both C(4)-N(2) bond lengths are 1.48 Å. Both C(4)-H(6) bond lengths are 1.10 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Mn(1), one C(5), and two equivalent C(3) atoms to form corner-sharing NMnC3 tetrahedra. In the second N site, N(2) is bonded in a trigonal non-coplanar geometry to one C(4) and two equivalent C(3) atoms. There are five inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1) and one O(2) atom. The H(1)-O(1) bond length is 1.00 Å. The H(1)-O(2) bond length is 1.72 Å. In the second H site, H(4) is bonded in a single-bond geometry to one C(3) atom. In the third H site, H(5) is bonded in a single-bond geometry to one C(3) atom. In the fourth H site, H(6) is bonded in a single-bond geometry to one C(4) atom. In the fifth H site, H(7) is bonded in a single-bond geometry to one C(5) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted water-like geometry to one Mn(1) and two equivalent H(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mn(1), one C(1), and one H(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Mn(1) and one C(1) atom. Linkers: 1 C1N2CN3CN1CN(C2)C3 ,2 [O]C(=O)CC([O])=O. Metal clusters: 2 [Mn]. RCSR code: hcb. The MOF has largest included sphere 2.38 A, density 1.88 g/cm3, surface area 3355.19 m2/g, accessible volume 0.10 cm3/g