MnC2O4(HOCH2CH2OH) crystallizes in the monoclinic Cc space group. The structure consists of eight 02329_fluka molecules inside a MnH4(CO3)2 framework. In the MnH4(CO3)2 framework, Mn(1) is bonded in an octahedral geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. The Mn(1)-O(1) bond length is 2.29 Å. The Mn(1)-O(2) bond length is 2.20 Å. The Mn(1)-O(3) bond length is 2.10 Å. The Mn(1)-O(4) bond length is 2.11 Å. The Mn(1)-O(5) bond length is 2.21 Å. The Mn(1)-O(6) bond length is 2.25 Å. There are two inequivalent C sites. In the first C site, C(4) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. The C(4)-O(3) bond length is 1.26 Å. The C(4)-O(4) bond length is 1.29 Å. In the second C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(2) bond length is 1.28 Å. There are four inequivalent H sites. In the first H site, H(3) is bonded in a distorted single-bond geometry to one O(4) and one O(5) atom. The H(3)-O(4) bond length is 1.68 Å. The H(3)-O(5) bond length is 1.00 Å. In the second H site, H(4) is bonded in a distorted single-bond geometry to one O(2) and one O(5) atom. The H(4)-O(2) bond length is 1.65 Å. The H(4)-O(5) bond length is 1.01 Å. In the third H site, H(5) is bonded in a single-bond geometry to one O(6) atom. The H(5)-O(6) bond length is 0.98 Å. In the fourth H site, H(6) is bonded in a single-bond geometry to one O(6) atom. The H(6)-O(6) bond length is 0.98 Å. There are six 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(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one C(1), and one H(4) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Mn(1) and one C(4) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Mn(1), one C(4), and one H(3) atom. In the fifth O site, O(5) is bonded in a distorted water-like geometry to one Mn(1), one H(3), and one H(4) atom. In the sixth O site, O(6) is bonded in a distorted water-like geometry to one Mn(1), one H(5), and one H(6) atom. Linkers: 2 [O]C(=O)/C=C\C([O])=O. Metal clusters: 2 [Mn]. RCSR code: ths. The MOF has largest included sphere 2.18 A, density 1.98 g/cm3, surface area 3203.74 m2/g, accessible volume 0.10 cm3/g