TbH3(CO2)4(CH2)2 crystallizes in the triclinic P-1 space group. The structure consists of eight 02329_fluka molecules inside a TbH3(CO2)4 framework. In the TbH3(CO2)4 framework, there are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 9-coordinate geometry to one O(11), one O(13), one O(15), one O(2), one O(4), one O(5), one O(6), one O(8), and one O(9) atom. The Tb(1)-O(11) bond length is 2.37 Å. The Tb(1)-O(13) bond length is 2.49 Å. The Tb(1)-O(15) bond length is 2.30 Å. The Tb(1)-O(2) bond length is 2.48 Å. The Tb(1)-O(4) bond length is 2.43 Å. The Tb(1)-O(5) bond length is 2.37 Å. The Tb(1)-O(6) bond length is 2.49 Å. The Tb(1)-O(8) bond length is 2.64 Å. The Tb(1)-O(9) bond length is 2.35 Å. In the second Tb site, Tb(2) is bonded in a 9-coordinate geometry to one O(1), one O(10), one O(12), one O(14), one O(16), one O(3), one O(5), one O(6), and one O(7) atom. The Tb(2)-O(1) bond length is 2.48 Å. The Tb(2)-O(10) bond length is 2.35 Å. The Tb(2)-O(12) bond length is 2.37 Å. The Tb(2)-O(14) bond length is 2.49 Å. The Tb(2)-O(16) bond length is 2.30 Å. The Tb(2)-O(3) bond length is 2.43 Å. The Tb(2)-O(5) bond length is 2.49 Å. The Tb(2)-O(6) bond length is 2.37 Å. The Tb(2)-O(7) bond length is 2.64 Å. There are eight inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one O(13) atom. The C(1)-O(13) bond length is 1.45 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one O(14) atom. The C(2)-O(14) bond length is 1.45 Å. In the third C site, C(5) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(3) atom. The C(5)-O(1) bond length is 1.29 Å. The C(5)-O(3) bond length is 1.26 Å. In the fourth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one O(2) and one O(4) atom. The C(6)-O(2) bond length is 1.29 Å. The C(6)-O(4) bond length is 1.27 Å. In the fifth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one O(5) and one O(7) atom. The C(9)-O(5) bond length is 1.28 Å. The C(9)-O(7) bond length is 1.27 Å. In the sixth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one O(6) and one O(8) atom. The C(10)-O(6) bond length is 1.28 Å. The C(10)-O(8) bond length is 1.27 Å. In the seventh C site, C(11) is bonded in a distorted bent 120 degrees geometry to one O(11) and one O(9) atom. The C(11)-O(11) bond length is 1.26 Å. The C(11)-O(9) bond length is 1.28 Å. In the eighth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one O(10) and one O(12) atom. The C(12)-O(10) bond length is 1.28 Å. The C(12)-O(12) bond length is 1.26 Å. There are six inequivalent H sites. In the first H site, H(9) is bonded in a distorted single-bond geometry to one O(1) and one O(13) atom. The H(9)-O(1) bond length is 1.63 Å. The H(9)-O(13) bond length is 1.01 Å. In the second H site, H(10) is bonded in a distorted single-bond geometry to one O(14) and one O(2) atom. The H(10)-O(14) bond length is 1.01 Å. The H(10)-O(2) bond length is 1.63 Å. In the third H site, H(11) is bonded in a distorted linear geometry to one O(15) and one O(8) atom. The H(11)-O(15) bond length is 1.00 Å. The H(11)-O(8) bond length is 1.63 Å. In the fourth H site, H(12) is bonded in a distorted linear geometry to one O(16) and one O(7) atom. The H(12)-O(16) bond length is 1.00 Å. The H(12)-O(7) bond length is 1.64 Å. In the fifth H site, H(13) is bonded in a distorted single-bond geometry to one O(15) and one O(9) atom. The H(13)-O(15) bond length is 1.00 Å. The H(13)-O(9) bond length is 1.66 Å. In the sixth H site, H(14) is bonded in a distorted single-bond geometry to one O(10) and one O(16) atom. The H(14)-O(10) bond length is 1.66 Å. The H(14)-O(16) bond length is 1.00 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Tb(2), one C(5), and one H(9) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Tb(1), one C(6), and one H(10) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Tb(2) and one C(5) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Tb(1) and one C(6) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Tb(1), one Tb(2), and one C(9) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Tb(1), one Tb(2), and one C(10) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Tb(2), one C(9), and one H(12) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Tb(1), one C(10), and one H(11) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Tb(1), one C(11), and one H(13) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Tb(2), one C(12), and one H(14) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to one Tb(1) and one C(11) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one Tb(2) and one C(12) atom. In the thirteenth O site, O(13) is bonded in a distorted water-like geometry to one Tb(1), one C(1), and one H(9) atom. In the fourteenth O site, O(14) is bonded in a distorted water-like geometry to one Tb(2), one C(2), and one H(10) atom. In the fifteenth O site, O(15) is bonded in a distorted water-like geometry to one Tb(1), one H(11), and one H(13) atom. In the sixteenth O site, O(16) is bonded in a distorted water-like geometry to one Tb(2), one H(12), and one H(14) atom. Linkers: 4 [O]C(=O)CC(O)(CC([O])=O)C([O])=O. Metal clusters: 4 [Tb]. The MOF has largest included sphere 1.86 A, density 2.76 g/cm3, surface area 2257.74 m2/g, accessible volume 0.08 cm3/g