TbC7H2(NO3)2 crystallizes in the triclinic P-1 space group. Tb(1) is bonded in a 7-coordinate geometry to one N(1), one N(2), one O(1), one O(2), one O(3), one O(5), and one O(6) atom. The Tb(1)-N(1) bond length is 2.65 Å. The Tb(1)-N(2) bond length is 2.74 Å. The Tb(1)-O(1) bond length is 2.39 Å. The Tb(1)-O(2) bond length is 2.41 Å. The Tb(1)-O(3) bond length is 2.34 Å. The Tb(1)-O(5) bond length is 2.42 Å. The Tb(1)-O(6) bond length is 2.43 Å. There are seven inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.50 Å. The C(1)-O(1) bond length is 1.25 Å. The C(1)-O(2) bond length is 1.25 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(1), one C(3), and one N(1) atom. The C(2)-C(3) bond length is 1.38 Å. The C(2)-N(1) bond length is 1.36 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(2), one N(1), and one H(1) atom. The C(3)-N(1) bond length is 1.31 Å. The C(3)-H(1) bond length is 0.93 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(3), and one O(4) atom. The C(4)-C(5) bond length is 1.49 Å. The C(4)-O(3) bond length is 1.26 Å. The C(4)-O(4) bond length is 1.26 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one C(6), and one N(2) atom. The C(5)-C(6) bond length is 1.36 Å. The C(5)-N(2) bond length is 1.36 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(5), one N(2), and one H(2) atom. The C(6)-N(2) bond length is 1.36 Å. The C(6)-H(2) bond length is 0.93 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one O(5) and one O(6) atom. The C(7)-O(5) bond length is 1.25 Å. The C(7)-O(6) bond length is 1.25 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Tb(1), one C(2), and one C(3) atom. In the second N site, N(2) is bonded in a distorted bent 120 degrees geometry to one Tb(1), one C(5), and one C(6) atom. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(3) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Tb(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Tb(1) and one C(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Tb(1) and one C(4) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one C(4) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Tb(1) and one C(7) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Tb(1) and one C(7) atom. Linkers: 3 [O]C(=O)c1cnc(C([O])=O)cn1 ,1 [O]C(=O)C([O])=O ,2 [C]c1cnc(C([O])=O)cn1. Metal clusters: 2 [Tb]. The MOF has largest included sphere 5.45 A, density 1.68 g/cm3, surface area 2707.06 m2/g, accessible volume 0.34 cm3/g