MnC2O4(HOCH2CH2OH) crystallizes in the monoclinic C2/c space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms. Both Mn(1)-O(1) bond lengths are 2.28 Å. Both Mn(1)-O(2) bond lengths are 2.29 Å. Both Mn(1)-O(5) bond lengths are 2.19 Å. In the second Mn site, Mn(2) is bonded in an octahedral geometry to one O(3), one O(4), one O(6), one O(7), one O(8), and one O(9) atom. The Mn(2)-O(3) bond length is 2.16 Å. The Mn(2)-O(4) bond length is 2.24 Å. The Mn(2)-O(6) bond length is 2.22 Å. The Mn(2)-O(7) bond length is 2.13 Å. The Mn(2)-O(8) bond length is 2.19 Å. The Mn(2)-O(9) bond length is 2.15 Å. There are six inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one C(2) and one H(7) atom. The C(1)-C(2) bond length is 1.35 Å. The C(1)-H(7) bond length is 1.09 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(6) atom. The C(2)-C(3) bond length is 1.50 Å. The C(2)-C(6) bond length is 1.50 Å. In the third C site, C(3) is bonded in a distorted water-like geometry to one C(2), one H(8), and one H(9) atom. The C(3)-H(8) bond length is 1.10 Å. The C(3)-H(9) bond length is 1.10 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one O(5) and one O(6) atom. The C(4)-O(5) bond length is 1.29 Å. The C(4)-O(6) bond length is 1.26 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. The C(5)-O(3) bond length is 1.28 Å. The C(5)-O(4) bond length is 1.28 Å. In the sixth C site, C(6) is bonded in a bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(6)-O(1) bond length is 1.28 Å. The C(6)-O(2) bond length is 1.28 Å. There are nine inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(3) and one O(7) atom. The H(1)-O(3) bond length is 1.74 Å. The H(1)-O(7) bond length is 0.99 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(2) and one O(7) atom. The H(2)-O(2) bond length is 1.67 Å. The H(2)-O(7) bond length is 1.00 Å. In the third H site, H(3) is bonded in a distorted single-bond geometry to one O(1) and one O(8) atom. The H(3)-O(1) bond length is 1.70 Å. The H(3)-O(8) bond length is 0.99 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(8) atom. The H(4)-O(8) bond length is 0.98 Å. In the fifth H site, H(5) is bonded in a distorted single-bond geometry to one O(5) and one O(9) atom. The H(5)-O(5) bond length is 1.71 Å. The H(5)-O(9) bond length is 0.99 Å. In the sixth H site, H(6) is bonded in a distorted single-bond geometry to one O(4) and one O(9) atom. The H(6)-O(4) bond length is 1.69 Å. The H(6)-O(9) bond length is 1.00 Å. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(1) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(3) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(3) atom. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Mn(1), one C(6), and one H(3) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mn(1), one C(6), and one H(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mn(2), one C(5), and one H(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mn(2), one C(5), and one H(6) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mn(1), one C(4), and one H(5) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Mn(2) and one C(4) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Mn(2), one H(1), and one H(2) atom. In the eighth O site, O(8) is bonded in a distorted water-like geometry to one Mn(2), one H(3), and one H(4) atom. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Mn(2), one H(5), and one H(6) atom. Linkers: 4 [O]C(=O)/C=C(\CC([O])=O)C([O])=O. Metal clusters: 6 [Mn]. The MOF has largest included sphere 3.14 A, density 2.00 g/cm3, surface area 3228.41 m2/g, accessible volume 0.10 cm3/g