CaC10NH7O5(CH2)2 crystallizes in the orthorhombic P2_12_12_1 space group. The structure consists of eight 02329_fluka molecules inside a CaC10NH7O5 framework. In the CaC10NH7O5 framework, Ca(1) is bonded in a 8-coordinate geometry to one O(1), one O(3), two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms. The Ca(1)-O(1) bond length is 2.42 Å. The Ca(1)-O(3) bond length is 2.44 Å. There is one shorter (2.39 Å) and one longer (2.62 Å) Ca(1)-O(2) bond length. There is one shorter (2.32 Å) and one longer (2.55 Å) Ca(1)-O(4) bond length. There is one shorter (2.43 Å) and one longer (2.47 Å) Ca(1)-O(5) bond length. There are ten inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(3), one O(1), and one O(2) atom. The C(1)-C(3) bond length is 1.50 Å. The C(1)-O(1) bond length is 1.28 Å. The C(1)-O(2) bond length is 1.27 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(3), and one O(4) atom. The C(2)-C(5) bond length is 1.50 Å. The C(2)-O(3) bond length is 1.27 Å. The C(2)-O(4) bond length is 1.29 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(1), one C(4), and one C(8) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-C(8) bond length is 1.40 Å. In the fourth C site, C(4) is bonded in a distorted trigonal planar geometry to one C(3), one C(5), and one H(2) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-H(2) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(2), one C(4), and one C(6) atom. The C(5)-C(6) bond length is 1.40 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(5), one C(7), and one H(3) atom. The C(6)-C(7) bond length is 1.40 Å. The C(6)-H(3) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(6), one C(8), and one H(4) atom. The C(7)-C(8) bond length is 1.40 Å. The C(7)-H(4) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a distorted trigonal planar geometry to one C(3), one C(7), and one H(5) atom. The C(8)-H(5) bond length is 1.09 Å. In the ninth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one N(1) and one O(5) atom. The C(9)-N(1) bond length is 1.33 Å. The C(9)-O(5) bond length is 1.26 Å. In the tenth C site, C(12) is bonded in a distorted trigonal non-coplanar geometry to one N(1), one H(10), and one H(11) atom. The C(12)-N(1) bond length is 1.46 Å. The C(12)-H(10) bond length is 1.10 Å. The C(12)-H(11) bond length is 1.10 Å. N(1) is bonded in a trigonal planar geometry to one C(12), one C(9), and one H(1) atom. The N(1)-H(1) bond length is 1.03 Å. There are seven inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(6) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(7) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(8) atom. In the sixth H site, H(10) is bonded in a single-bond geometry to one C(12) atom. In the seventh H site, H(11) is bonded in a single-bond geometry to one C(12) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Ca(1) and one C(1) atom. In the second O site, O(2) is bonded in a 1-coordinate geometry to two equivalent Ca(1) and one C(1) atom. In the third O site, O(3) is bonded in a distorted L-shaped geometry to one Ca(1) and one C(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Ca(1) and one C(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to two equivalent Ca(1) and one C(9) atom. Linkers: 4 [O]C(=O)c1cccc(C([O])=O)c1. Metal clusters: 4 [Ca]. RCSR code: lvt. The MOF has largest included sphere 2.52 A, density 1.52 g/cm3, surface area 4547.71 m2/g, accessible volume 0.18 cm3/g