EuC5N2O5CH crystallizes in the trigonal R32 space group. The structure consists of nine 02329_fluka molecules inside a EuC5N2O5 framework. In the EuC5N2O5 framework, Eu(1) is bonded in a 6-coordinate geometry to two equivalent N(1), two equivalent O(1), and two equivalent O(2) atoms. Both Eu(1)-N(1) bond lengths are 2.67 Å. Both Eu(1)-O(1) bond lengths are 2.37 Å. Both Eu(1)-O(2) bond lengths are 2.35 Å. There are three 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 1.24 Å. The C(1)-O(2) bond length is 1.26 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one N(1) atom. The C(2)-N(1) bond length is 1.33 Å. In the third C site, C(4) is bonded in a trigonal planar geometry to two equivalent N(1) and one O(3) atom. Both C(4)-N(1) bond lengths are 1.38 Å. The C(4)-O(3) bond length is 1.25 Å. N(1) is bonded in a distorted trigonal planar geometry to one Eu(1), one C(2), and one C(4) atom. There are three inequivalent O sites. In the first O site, O(3) is bonded in a single-bond geometry to one C(4) atom. In the second O site, O(1) is bonded in a bent 150 degrees geometry to one Eu(1) and one C(1) atom. In the third O site, O(2) is bonded in a bent 120 degrees geometry to one Eu(1) and one C(1) atom. Linkers: 3 [O]C(=O)C1=NC(=O)N=C(C([O])=O)[CH]1. Metal clusters: 3 [Eu]. RCSR code: nbo. The MOF has largest included sphere 6.18 A, density 1.88 g/cm3, surface area 2708.83 m2/g, accessible volume 0.28 cm3/g