SmC11H4O6Br(CH)2 crystallizes in the monoclinic P2_1/c space group. The structure consists of eight 02329_fluka molecules inside a SmC11H4O6Br framework. In the SmC11H4O6Br framework, Sm(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(6), two equivalent O(4), and one Br(1) atom. The Sm(1)-O(1) bond length is 2.37 Å. The Sm(1)-O(2) bond length is 2.38 Å. The Sm(1)-O(3) bond length is 2.44 Å. The Sm(1)-O(5) bond length is 2.41 Å. The Sm(1)-O(6) bond length is 2.39 Å. There is one shorter (2.38 Å) and one longer (2.77 Å) Sm(1)-O(4) bond length. The Sm(1)-Br(1) bond length is 2.83 Å. There are eleven inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(10), one C(11), and one C(2) atom. The C(1)-C(10) bond length is 1.44 Å. The C(1)-C(11) bond length is 1.51 Å. The C(1)-C(2) bond length is 1.35 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(1) and one H(1) atom. The C(2)-H(1) bond length is 0.93 Å. In the third C site, C(3) is bonded in a single-bond geometry to one C(4) and one H(2) atom. The C(3)-C(4) bond length is 1.37 Å. The C(3)-H(2) bond length is 0.93 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(12), one C(3), and one C(5) atom. The C(4)-C(12) bond length is 1.52 Å. The C(4)-C(5) bond length is 1.42 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(10), one C(4), and one C(6) atom. The C(5)-C(10) bond length is 1.42 Å. The C(5)-C(6) bond length is 1.44 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(5) and one H(3) atom. The C(6)-H(3) bond length is 0.93 Å. In the seventh C site, C(9) is bonded in a distorted single-bond geometry to one C(10) and one H(6) atom. The C(9)-C(10) bond length is 1.41 Å. The C(9)-H(6) bond length is 0.93 Å. In the eighth C site, C(10) is bonded in a trigonal planar geometry to one C(1), one C(5), and one C(9) atom. In the ninth C site, C(11) is bonded in a bent 120 degrees geometry to one C(1), one O(1), and one O(2) atom. The C(11)-O(1) bond length is 1.27 Å. The C(11)-O(2) bond length is 1.25 Å. In the tenth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(3), and one O(4) atom. The C(12)-O(3) bond length is 1.26 Å. The C(12)-O(4) bond length is 1.26 Å. In the eleventh C site, C(13) is bonded in a distorted bent 120 degrees geometry to one O(5) and one O(6) atom. The C(13)-O(5) bond length is 1.24 Å. The C(13)-O(6) bond length is 1.26 Å. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(3) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(6) atom. In the fourth H site, H(6) is bonded in a single-bond geometry to one C(9) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Sm(1) and one C(11) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Sm(1) and one C(11) atom. In the third O site, O(3) is bonded in a distorted water-like geometry to one Sm(1) and one C(12) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to two equivalent Sm(1) and one C(12) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Sm(1) and one C(13) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Sm(1) and one C(13) atom. Br(1) is bonded in a single-bond geometry to one Sm(1) atom. Linkers: 2 [O]C(=O)C([O])=O ,4 [O]C(=O)c1ccc(C([O])=O)c2ccccc12. Metal clusters: 4 [Sm]. The MOF has largest included sphere 4.92 A, density 1.60 g/cm3, surface area 3041.49 m2/g, accessible volume 0.31 cm3/g