TbC10NH8O9 crystallizes in the monoclinic C2/c space group. Tb(1) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. The Tb(1)-O(1) bond length is 2.41 Å. The Tb(1)-O(2) bond length is 2.42 Å. The Tb(1)-O(3) bond length is 2.43 Å. The Tb(1)-O(4) bond length is 2.51 Å. The Tb(1)-O(5) bond length is 2.51 Å. The Tb(1)-O(6) bond length is 2.47 Å. The Tb(1)-O(7) bond length is 2.60 Å. The Tb(1)-O(8) bond length is 2.37 Å. The Tb(1)-O(9) bond length is 2.33 Å. There are ten inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(7) atom. The C(1)-O(3) bond length is 1.27 Å. The C(1)-O(7) bond length is 1.26 Å. In the second C site, C(2) is bonded in a bent 120 degrees geometry to one C(3), one O(2), and one O(4) atom. The C(2)-C(3) bond length is 1.49 Å. The C(2)-O(2) bond length is 1.29 Å. The C(2)-O(4) bond length is 1.27 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(2), one C(4), and one C(6) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-C(6) bond length is 1.40 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(3), one C(8), and one H(1) atom. The C(4)-C(8) bond length is 1.40 Å. The C(4)-H(1) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(6), one C(7), and one N(1) atom. The C(5)-C(6) bond length is 1.39 Å. The C(5)-C(7) bond length is 1.39 Å. The C(5)-N(1) bond length is 1.46 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(3), one C(5), and one H(2) atom. The C(6)-H(2) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(5), one C(8), and one H(3) atom. The C(7)-C(8) bond length is 1.40 Å. The C(7)-H(3) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(10), one C(4), and one C(7) atom. The C(8)-C(10) bond length is 1.50 Å. In the ninth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one O(5) and one O(6) atom. The C(9)-O(5) bond length is 1.27 Å. The C(9)-O(6) bond length is 1.27 Å. In the tenth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one C(8), one O(8), and one O(9) atom. The C(10)-O(8) bond length is 1.28 Å. The C(10)-O(9) bond length is 1.26 Å. N(1) is bonded in a tetrahedral geometry to one C(5), one H(4), one H(5), and one H(6) atom. The N(1)-H(4) bond length is 1.03 Å. The N(1)-H(5) bond length is 1.05 Å. The N(1)-H(6) bond length is 1.05 Å. There are eight 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(6) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(7) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one N(1) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one N(1) and one O(6) atom. The H(5)-O(6) bond length is 1.69 Å. In the sixth H site, H(6) is bonded in a single-bond geometry to one N(1) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one O(1) atom. The H(7)-O(1) bond length is 0.98 Å. In the eighth H site, H(8) is bonded in a distorted single-bond geometry to one O(1) and one O(2) atom. The H(8)-O(1) bond length is 1.00 Å. The H(8)-O(2) bond length is 1.68 Å. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted water-like geometry to one Tb(1), one H(7), and one H(8) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Tb(1), one C(2), and one H(8) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Tb(1) and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Tb(1) and one C(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Tb(1) and one C(9) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Tb(1), one C(9), and one H(5) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Tb(1) and one C(1) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one Tb(1) and one C(10) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Tb(1) and one C(10) atom. Linkers: 4 [O]C(=O)C([O])=O ,4 [NH3]c1cc(cc(c1)C(=O)[O])C(=O)[O]. Metal clusters: 4 [Tb]. RCSR code: bhd. The MOF has largest included sphere 1.84 A, density 2.63 g/cm3, surface area 2238.69 m2/g, accessible volume 0.05 cm3/g