LaH15(C9O2)3 crystallizes in the trigonal R32 space group. La(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Both La(1)-O(1) bond lengths are 2.47 Å. Both La(1)-O(2) bond lengths are 2.61 Å. Both La(1)-O(3) bond lengths are 2.51 Å. There are sixteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one C(13) and one H(1) atom. The C(1)-C(13) bond length is 1.37 Å. The C(1)-H(1) bond length is 1.00 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(14) and one H(2) atom. The C(2)-C(14) bond length is 1.37 Å. The C(2)-H(2) bond length is 1.00 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(15), one C(4), and one H(3) atom. The C(3)-C(15) bond length is 1.37 Å. The C(3)-C(4) bond length is 1.37 Å. The C(3)-H(3) bond length is 1.00 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(16), one C(3), and one C(5) atom. The C(4)-C(16) bond length is 1.37 Å. The C(4)-C(5) bond length is 1.46 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(10), one C(4), and one C(6) atom. The C(5)-C(10) bond length is 1.37 Å. The C(5)-C(6) bond length is 1.37 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(5), one C(7), and one H(4) atom. The C(6)-C(7) bond length is 1.37 Å. The C(6)-H(4) bond length is 1.00 Å. In the seventh C site, C(7) is bonded in a distorted trigonal planar geometry to one C(6), one C(8), and one H(5) atom. The C(7)-C(8) bond length is 1.37 Å. The C(7)-H(5) bond length is 1.00 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(11), one C(7), and one C(9) atom. The C(8)-C(11) bond length is 1.47 Å. The C(8)-C(9) bond length is 1.37 Å. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to one C(8) and one H(6) atom. The C(9)-H(6) bond length is 1.00 Å. In the tenth C site, C(10) is bonded in a distorted single-bond geometry to one C(5) and one H(7) atom. The C(10)-H(7) bond length is 1.00 Å. In the eleventh C site, C(11) is bonded in a distorted bent 120 degrees geometry to one C(8), one O(2), and one O(3) atom. The C(11)-O(2) bond length is 1.27 Å. The C(11)-O(3) bond length is 1.27 Å. In the twelfth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one C(13) and two equivalent O(1) atoms. The C(12)-C(13) bond length is 1.47 Å. Both C(12)-O(1) bond lengths are 1.25 Å. In the thirteenth C site, C(13) is bonded in a trigonal planar geometry to one C(12) and two equivalent C(1) atoms. In the fourteenth C site, C(14) is bonded in a trigonal planar geometry to one C(15) and two equivalent C(2) atoms. The C(14)-C(15) bond length is 1.46 Å. In the fifteenth C site, C(15) is bonded in a trigonal planar geometry to one C(14) and two equivalent C(3) atoms. In the sixteenth C site, C(16) is bonded in a distorted single-bond geometry to two equivalent C(4) and one H(8) atom. The C(16)-H(8) bond length is 1.00 Å. 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(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(3) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(6) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(7) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(9) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(10) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(16) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one La(1) and one C(12) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one La(1) and one C(11) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one La(1) and one C(11) atom. Linkers: 9 [O]C(=O)c1ccc(-c2cc(-c3ccc(C([O])=O)cc3)cc(-c3ccc(C([O])=O)cc3)c2)cc1. Metal clusters: 9 [La]. The MOF has largest included sphere 12.21 A, density 0.96 g/cm3, surface area 3467.87 m2/g, accessible volume 0.71 cm3/g