TbC20NH8O8CH crystallizes in the monoclinic C2/c space group. The structure consists of eight 02329_fluka molecules inside a TbC20NH8O8 framework. In the TbC20NH8O8 framework, Tb(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(6), one O(8), and two equivalent O(1) atoms. The Tb(1)-O(2) bond length is 2.39 Å. The Tb(1)-O(3) bond length is 2.46 Å. The Tb(1)-O(4) bond length is 2.35 Å. The Tb(1)-O(5) bond length is 2.48 Å. The Tb(1)-O(6) bond length is 2.41 Å. The Tb(1)-O(8) bond length is 2.33 Å. There is one shorter (2.35 Å) and one longer (2.61 Å) Tb(1)-O(1) bond length. There are twenty inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one C(19) and one H(1) atom. The C(1)-C(19) bond length is 1.40 Å. The C(1)-H(1) bond length is 0.95 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(7), one O(2), and one O(4) atom. The C(2)-C(7) bond length is 1.50 Å. The C(2)-O(2) bond length is 1.27 Å. The C(2)-O(4) bond length is 1.25 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(10) and one H(2) atom. The C(3)-C(10) bond length is 1.42 Å. The C(3)-H(2) bond length is 0.95 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(17), one C(8), and one H(3) atom. The C(4)-C(17) bond length is 1.40 Å. The C(4)-C(8) bond length is 1.41 Å. The C(4)-H(3) bond length is 0.95 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(17), one C(20), and one N(1) atom. The C(5)-C(17) bond length is 1.50 Å. The C(5)-C(20) bond length is 1.40 Å. The C(5)-N(1) bond length is 1.35 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(10), one C(15), and one C(7) atom. The C(6)-C(10) bond length is 1.49 Å. The C(6)-C(15) bond length is 1.40 Å. The C(6)-C(7) bond length is 1.40 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one C(18), one C(2), and one C(6) atom. The C(7)-C(18) bond length is 1.40 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(11), one C(13), and one C(4) atom. The C(8)-C(11) bond length is 1.51 Å. The C(8)-C(13) bond length is 1.38 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one C(12), one C(16), and one C(17) atom. The C(9)-C(12) bond length is 1.39 Å. The C(9)-C(16) bond length is 1.50 Å. The C(9)-C(17) bond length is 1.40 Å. In the tenth C site, C(10) is bonded in a distorted trigonal planar geometry to one C(3), one C(6), and one N(1) atom. The C(10)-N(1) bond length is 1.34 Å. In the eleventh C site, C(11) is bonded in a distorted bent 120 degrees geometry to one C(8), one O(5), and one O(6) atom. The C(11)-O(5) bond length is 1.26 Å. The C(11)-O(6) bond length is 1.26 Å. In the twelfth C site, C(12) is bonded in a distorted single-bond geometry to one C(9) and one H(4) atom. The C(12)-H(4) bond length is 0.95 Å. In the thirteenth C site, C(13) is bonded in a distorted single-bond geometry to one C(8) and one H(5) atom. The C(13)-H(5) bond length is 0.95 Å. In the fourteenth C site, C(14) is bonded in a distorted bent 120 degrees geometry to one C(19), one O(7), and one O(8) atom. The C(14)-C(19) bond length is 1.50 Å. The C(14)-O(7) bond length is 1.27 Å. The C(14)-O(8) bond length is 1.25 Å. In the fifteenth C site, C(15) is bonded in a single-bond geometry to one C(19), one C(6), and one H(6) atom. The C(15)-C(19) bond length is 1.39 Å. The C(15)-H(6) bond length is 0.95 Å. In the sixteenth C site, C(16) is bonded in a distorted bent 120 degrees geometry to one C(9), one O(1), and one O(3) atom. The C(16)-O(1) bond length is 1.26 Å. The C(16)-O(3) bond length is 1.25 Å. In the seventeenth C site, C(17) is bonded in a trigonal planar geometry to one C(4), one C(5), and one C(9) atom. In the eighteenth C site, C(18) is bonded in a distorted single-bond geometry to one C(7) and one H(7) atom. The C(18)-H(7) bond length is 0.95 Å. In the nineteenth C site, C(19) is bonded in a trigonal planar geometry to one C(1), one C(14), and one C(15) atom. In the twentieth C site, C(20) is bonded in a distorted single-bond geometry to one C(5) and one H(8) atom. The C(20)-H(8) bond length is 0.95 Å. N(1) is bonded in a bent 120 degrees geometry to one C(10) and one C(5) atom. There are eight inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) 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(4) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(12) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(13) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(15) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(18) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(20) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Tb(1) and one C(16) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Tb(1) and one C(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Tb(1) and one C(16) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Tb(1) and one C(2) atom. In the fifth O site, O(5) is bonded in a distorted L-shaped geometry to one Tb(1) and one C(11) atom. In the sixth O site, O(6) is bonded in a distorted L-shaped geometry to one Tb(1) and one C(11) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one C(14) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Tb(1) and one C(14) atom. Linkers: 8 [O]C(=O)c1ccc(C([O])=O)c(-c2cccc(-c3cc(C([O])=O)ccc3C([O])=O)n2)c1. Metal clusters: 4 O=[C]O[Tb]123(O[C]=O)O[C]O[Tb](O[C]=O)(O[C]=O)(O[C]O1)(O[C]O2)O[C]O3. The MOF has largest included sphere 5.39 A, density 1.47 g/cm3, surface area 3281.63 m2/g, accessible volume 0.33 cm3/g