Mn2C9H3O6F crystallizes in the monoclinic C2/c space group. Mn(1) is bonded to one O(1), one O(3), two equivalent O(2), and two equivalent F(1) atoms to form a mixture of distorted edge and corner-sharing MnO4F2 octahedra. The corner-sharing octahedral tilt angles range from 44-69°. The Mn(1)-O(1) bond length is 2.03 Å. The Mn(1)-O(3) bond length is 2.14 Å. There is one shorter (2.16 Å) and one longer (2.19 Å) Mn(1)-O(2) bond length. There is one shorter (2.15 Å) and one longer (2.39 Å) Mn(1)-F(1) bond length. There are six inequivalent C sites. In the first C site, C(6) is bonded in a trigonal planar geometry to one C(2), one C(4), and one C(5) atom. The C(6)-C(2) bond length is 1.49 Å. The C(6)-C(4) bond length is 1.40 Å. The C(6)-C(5) bond length is 1.40 Å. In the second C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(3) and two equivalent O(1) atoms. The C(1)-C(3) bond length is 1.50 Å. Both C(1)-O(1) bond lengths are 1.27 Å. In the third C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(2), and one O(3) atom. The C(2)-O(2) bond length is 1.30 Å. The C(2)-O(3) bond length is 1.26 Å. In the fourth C site, C(3) is bonded in a trigonal planar geometry to one C(1) and two equivalent C(5) atoms. Both C(3)-C(5) bond lengths are 1.40 Å. In the fifth C site, C(4) is bonded in a distorted single-bond geometry to two equivalent C(6) and one H(1) atom. The C(4)-H(1) bond length is 1.09 Å. In the sixth C site, C(5) is bonded in a distorted single-bond geometry to one C(3), one C(6), and one H(2) atom. The C(5)-H(2) bond length is 1.09 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(4) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(5) atom. There are three inequivalent O sites. In the first O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Mn(1) and one C(2) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Mn(1) and one C(2) atom. In the third O site, O(1) is bonded in a bent 150 degrees geometry to one Mn(1) and one C(1) atom. F(1) is bonded to four equivalent Mn(1) atoms to form edge-sharing FMn4 tetrahedra. Linkers: 2 [O]C(=O)c1cc(C([O])=O)cc(C([O])=O)c1. Metal clusters: 4 [Mn]. RCSR code: ant. The MOF has largest included sphere 1.80 A, density 2.29 g/cm3, surface area 2280.84 m2/g, accessible volume 0.06 cm3/g