SmC8NH5O7(CH2)2 crystallizes in the monoclinic P2_1/c space group. The structure consists of eight 02329_fluka molecules inside a SmC8NH5O7 framework. In the SmC8NH5O7 framework, Sm(1) is bonded in a 9-coordinate geometry to one N(1), one O(1), one O(2), one O(3), one O(4), one O(6), one O(7), and two equivalent O(5) atoms. The Sm(1)-N(1) bond length is 2.72 Å. The Sm(1)-O(1) bond length is 2.45 Å. The Sm(1)-O(2) bond length is 2.46 Å. The Sm(1)-O(3) bond length is 2.41 Å. The Sm(1)-O(4) bond length is 2.58 Å. The Sm(1)-O(6) bond length is 2.44 Å. The Sm(1)-O(7) bond length is 2.47 Å. There is one shorter (2.42 Å) and one longer (2.56 Å) Sm(1)-O(5) bond length. There are eight inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(4) and one O(5) atom. The C(1)-O(4) bond length is 1.27 Å. The C(1)-O(5) bond length is 1.29 Å. In the second C site, C(4) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(3), and one O(6) atom. The C(4)-C(5) bond length is 1.51 Å. The C(4)-O(3) bond length is 1.27 Å. The C(4)-O(6) bond length is 1.27 Å. In the third C site, C(5) is bonded in a trigonal planar geometry to one C(4), one C(6), and one C(8) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-C(8) bond length is 1.40 Å. In the fourth C site, C(6) is bonded in a distorted single-bond geometry to one C(10), one C(5), and one H(5) atom. The C(6)-C(10) bond length is 1.39 Å. The C(6)-H(5) bond length is 1.09 Å. In the fifth C site, C(7) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(7) atom. The C(7)-O(1) bond length is 1.28 Å. The C(7)-O(7) bond length is 1.26 Å. In the sixth C site, C(8) is bonded in a distorted trigonal planar geometry to one C(5), one N(1), and one H(6) atom. The C(8)-N(1) bond length is 1.34 Å. The C(8)-H(6) bond length is 1.09 Å. In the seventh C site, C(9) is bonded in a distorted single-bond geometry to one C(10) and one N(1) atom. The C(9)-C(10) bond length is 1.39 Å. The C(9)-N(1) bond length is 1.35 Å. In the eighth C site, C(10) is bonded in a distorted trigonal planar geometry to one C(6), one C(9), and one H(7) atom. The C(10)-H(7) bond length is 1.09 Å. N(1) is bonded in a distorted bent 120 degrees geometry to one Sm(1), one C(8), and one C(9) atom. There are five inequivalent H sites. In the first H site, H(5) is bonded in a single-bond geometry to one C(6) atom. In the second H site, H(6) is bonded in a single-bond geometry to one C(8) atom. In the third H site, H(7) is bonded in a single-bond geometry to one C(10) atom. In the fourth H site, H(8) is bonded in a single-bond geometry to one O(2) atom. The H(8)-O(2) bond length is 1.00 Å. In the fifth H site, H(9) is bonded in a single-bond geometry to one O(2) atom. The H(9)-O(2) bond length is 0.99 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Sm(1) and one C(7) atom. In the second O site, O(2) is bonded in a distorted water-like geometry to one Sm(1), one H(8), and one H(9) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Sm(1) and one C(4) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Sm(1) and one C(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to two equivalent Sm(1) and one C(1) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Sm(1) and one C(4) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Sm(1) and one C(7) atom. Linkers: 2 [O]C(=O)CCCCC([O])=O ,4 [O]C(=O)c1ccc(C([O])=O)nc1. Metal clusters: 4 [Sm]. The MOF has largest included sphere 3.21 A, density 2.18 g/cm3, surface area 2569.82 m2/g, accessible volume 0.10 cm3/g