ErC14H7(NO3)2(CH2)10CHCHO2 is Indium-derived structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two 02329_fluka molecules, twenty 02329_fluka molecules, two formic acid molecules, and one ErC14H7(NO3)2 cluster. In the ErC14H7(NO3)2 cluster, Er(1) is bonded in a 9-coordinate geometry to one N(1), one N(2), one O(1), one O(2), one O(3), one O(4), one O(6), and two equivalent O(5) atoms. The Er(1)-N(1) bond length is 2.56 Å. The Er(1)-N(2) bond length is 2.65 Å. The Er(1)-O(1) bond length is 2.35 Å. The Er(1)-O(2) bond length is 2.39 Å. The Er(1)-O(3) bond length is 2.31 Å. The Er(1)-O(4) bond length is 2.31 Å. The Er(1)-O(6) bond length is 2.38 Å. There is one shorter (2.25 Å) and one longer (2.86 Å) Er(1)-O(5) bond length. There are fourteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(1)-O(1) bond length is 1.29 Å. The C(1)-O(2) bond length is 1.28 Å. In the second C site, C(7) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. The C(7)-O(3) bond length is 1.27 Å. The C(7)-O(4) bond length is 1.27 Å. In the third C site, C(8) is bonded in a distorted bent 120 degrees geometry to one O(5) and one O(6) atom. The C(8)-O(5) bond length is 1.28 Å. The C(8)-O(6) bond length is 1.26 Å. In the fourth C site, C(15) is bonded in a distorted bent 120 degrees geometry to one N(1) and one H(22) atom. The C(15)-N(1) bond length is 1.33 Å. The C(15)-H(22) bond length is 1.09 Å. In the fifth C site, C(17) is bonded in a distorted single-bond geometry to one C(18) and one H(24) atom. The C(17)-C(18) bond length is 1.41 Å. The C(17)-H(24) bond length is 1.09 Å. In the sixth C site, C(18) is bonded in a trigonal planar geometry to one C(17), one C(19), and one C(26) atom. The C(18)-C(19) bond length is 1.43 Å. The C(18)-C(26) bond length is 1.42 Å. In the seventh C site, C(19) is bonded in a distorted single-bond geometry to one C(18) and one H(25) atom. The C(19)-H(25) bond length is 1.09 Å. In the eighth C site, C(20) is bonded in a distorted single-bond geometry to one C(21) and one H(26) atom. The C(20)-C(21) bond length is 1.43 Å. The C(20)-H(26) bond length is 1.09 Å. In the ninth C site, C(21) is bonded in a trigonal planar geometry to one C(20), one C(22), and one C(25) atom. The C(21)-C(22) bond length is 1.41 Å. The C(21)-C(25) bond length is 1.42 Å. In the tenth C site, C(22) is bonded in a distorted single-bond geometry to one C(21) and one H(27) atom. The C(22)-H(27) bond length is 1.09 Å. In the eleventh C site, C(23) is bonded in a distorted single-bond geometry to one C(24) and one H(28) atom. The C(23)-C(24) bond length is 1.41 Å. The C(23)-H(28) bond length is 1.09 Å. In the twelfth C site, C(24) is bonded in a distorted trigonal planar geometry to one C(23), one N(2), and one H(29) atom. The C(24)-N(2) bond length is 1.33 Å. The C(24)-H(29) bond length is 1.09 Å. In the thirteenth C site, C(25) is bonded in a distorted trigonal planar geometry to one C(21), one C(26), and one N(2) atom. The C(25)-C(26) bond length is 1.44 Å. The C(25)-N(2) bond length is 1.36 Å. In the fourteenth C site, C(26) is bonded in a distorted trigonal planar geometry to one C(18), one C(25), and one N(1) atom. The C(26)-N(1) bond length is 1.36 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Er(1), one C(15), and one C(26) atom. In the second N site, N(2) is bonded in a distorted bent 120 degrees geometry to one Er(1), one C(24), and one C(25) atom. There are seven inequivalent H sites. In the first H site, H(22) is bonded in a single-bond geometry to one C(15) atom. In the second H site, H(24) is bonded in a single-bond geometry to one C(17) atom. In the third H site, H(25) is bonded in a single-bond geometry to one C(19) atom. In the fourth H site, H(26) is bonded in a single-bond geometry to one C(20) atom. In the fifth H site, H(27) is bonded in a single-bond geometry to one C(22) atom. In the sixth H site, H(28) is bonded in a single-bond geometry to one C(23) atom. In the seventh H site, H(29) is bonded in a single-bond geometry to one C(24) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted L-shaped geometry to one Er(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Er(1) and one C(1) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Er(1) and one C(7) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Er(1) and one C(7) atom. In the fifth O site, O(5) is bonded in a distorted linear geometry to two equivalent Er(1) and one C(8) atom. In the sixth O site, O(6) is bonded in a distorted water-like geometry to one Er(1) and one C(8) atom. Linkers: 2 [O]C(=O)CCCCCC([O])=O. Metal clusters: 2 [Er]. The MOF has largest included sphere 2.96 A, density 1.72 g/cm3, surface area 4304.43 m2/g, accessible volume 0.15 cm3/g