TbC6P2N3H10O11 crystallizes in the monoclinic C2/c space group. Tb(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms. Both Tb(1)-O(1) bond lengths are 2.31 Å. Both Tb(1)-O(2) bond lengths are 2.26 Å. Both Tb(1)-O(4) bond lengths are 2.31 Å. Both Tb(1)-O(5) bond lengths are 2.70 Å. There are three inequivalent C sites. In the first C site, C(3) is bonded in a distorted trigonal non-coplanar geometry to one N(1), one H(4), and one H(5) atom. The C(3)-N(1) bond length is 1.45 Å. The C(3)-H(4) bond length is 1.10 Å. The C(3)-H(5) bond length is 1.10 Å. In the second C site, C(1) is bonded in a distorted tetrahedral geometry to one P(1), one N(1), one H(2), and one H(3) atom. The C(1)-P(1) bond length is 1.83 Å. The C(1)-N(1) bond length is 1.46 Å. The C(1)-H(2) bond length is 1.10 Å. The C(1)-H(3) bond length is 1.10 Å. In the third C site, C(2) is bonded in a distorted bent 120 degrees geometry to one N(1) and one O(4) atom. The C(2)-N(1) bond length is 1.33 Å. The C(2)-O(4) bond length is 1.25 Å. P(1) is bonded in a tetrahedral geometry to one C(1), one O(1), one O(2), and one O(3) atom. The P(1)-O(1) bond length is 1.51 Å. The P(1)-O(2) bond length is 1.52 Å. The P(1)-O(3) bond length is 1.60 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one C(1), one C(2), and one C(3) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one O(6) and two equivalent O(5) atoms. The N(2)-O(6) bond length is 1.25 Å. Both N(2)-O(5) bond lengths are 1.28 Å. There are five inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(3) atom. The H(1)-O(3) bond length is 1.00 Å. In the second H site, H(2) is bonded in a single-bond geometry to one C(1) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(1) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(3) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(3) atom. There are six inequivalent O sites. In the first O site, O(3) is bonded in a bent 120 degrees geometry to one P(1) and one H(1) atom. In the second O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Tb(1) and one C(2) atom. In the third O site, O(5) is bonded in a distorted single-bond geometry to one Tb(1) and one N(2) atom. In the fourth O site, O(2) is bonded in a bent 150 degrees geometry to one Tb(1) and one P(1) atom. In the fifth O site, O(6) is bonded in a single-bond geometry to one N(2) atom. In the sixth O site, O(1) is bonded in a bent 150 degrees geometry to one Tb(1) and one P(1) atom. Linkers: 2 [O]P(=O)(O)CN1CC(=O)N(CP([O])(=O)O)CC1=O ,2 [O]P(O)CN1CC(=O)N(CP([O])(=O)O)CC1=O. Metal clusters: 2 [Tb]. The MOF has largest included sphere 2.31 A, density 2.49 g/cm3, surface area 2467.38 m2/g, accessible volume 0.12 cm3/g