(EuH6(C2O)6)4(Si(C3H2)4)3 is Indium-derived structured and crystallizes in the orthorhombic Cccm space group. The structure is zero-dimensional and consists of twelve tetrakis(prop-1-en-2-yl)silane molecules and four EuH6(C2O)6 clusters. In each EuH6(C2O)6 cluster, there are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a distorted pentagonal pyramidal geometry to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. Both Eu(1)-O(2) bond lengths are 2.35 Å. Both Eu(1)-O(3) bond lengths are 2.34 Å. Both Eu(1)-O(4) bond lengths are 2.32 Å. In the second Eu site, Eu(2) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(5) atoms. Both Eu(2)-O(1) bond lengths are 2.32 Å. Both Eu(2)-O(5) bond lengths are 2.37 Å. There are twelve inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(2), one O(3), and one O(4) atom. The C(1)-C(2) bond length is 1.51 Å. The C(1)-O(3) bond length is 1.23 Å. The C(1)-O(4) bond length is 1.21 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(14), and one C(9) atom. The C(2)-C(14) bond length is 1.36 Å. The C(2)-C(9) bond length is 1.37 Å. In the third C site, C(3) is bonded in a bent 120 degrees geometry to one C(4), one O(1), and one O(2) atom. The C(3)-C(4) bond length is 1.49 Å. The C(3)-O(1) bond length is 1.25 Å. The C(3)-O(2) bond length is 1.21 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(10), one C(3), and one C(7) atom. The C(4)-C(10) bond length is 1.39 Å. The C(4)-C(7) bond length is 1.37 Å. In the fifth C site, C(7) is bonded in a distorted single-bond geometry to one C(4) and one H(1) atom. The C(7)-H(1) bond length is 0.93 Å. In the sixth C site, C(9) is bonded in a distorted single-bond geometry to one C(2) and one H(3) atom. The C(9)-H(3) bond length is 0.93 Å. In the seventh C site, C(10) is bonded in a distorted single-bond geometry to one C(4) and one H(4) atom. The C(10)-H(4) bond length is 0.93 Å. In the eighth C site, C(14) is bonded in a distorted single-bond geometry to one C(2) and one H(8) atom. The C(14)-H(8) bond length is 0.93 Å. In the ninth C site, C(16) is bonded in a distorted L-shaped geometry to one C(17), one O(5), and one O(6) atom. The C(16)-C(17) bond length is 1.53 Å. The C(16)-O(5) bond length is 1.40 Å. The C(16)-O(6) bond length is 1.28 Å. In the tenth C site, C(17) is bonded in a trigonal planar geometry to one C(16), one C(18), and one C(21) atom. The C(17)-C(18) bond length is 1.24 Å. The C(17)-C(21) bond length is 1.40 Å. In the eleventh C site, C(18) is bonded in a distorted single-bond geometry to one C(17) and one H(9) atom. The C(18)-H(9) bond length is 0.93 Å. In the twelfth C site, C(21) is bonded in a single-bond geometry to one C(17) and one H(12) atom. The C(21)-H(12) bond length is 0.93 Å. There are six inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(7) atom. In the second H site, H(3) is bonded in a single-bond geometry to one C(9) atom. In the third H site, H(4) is bonded in a single-bond geometry to one C(10) atom. In the fourth H site, H(8) is bonded in a single-bond geometry to one C(14) atom. In the fifth H site, H(9) is bonded in a single-bond geometry to one C(18) atom. In the sixth H site, H(12) is bonded in a single-bond geometry to one C(21) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Eu(2) and one C(3) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Eu(1) and one C(3) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Eu(1) and one C(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Eu(1) and one C(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Eu(2) and one C(16) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one C(16) atom. Linkers: 2 [O]C(=O)c1ccc([Si](c2ccc(C([O])=O)cc2)(c2ccc(C([O])=O)cc2)c2ccc(C([O])=O)cc2)cc1 ,4 [O][C]([O])c1ccc([Si](c2ccc([C]([O])[O])cc2)(c2ccc(C([O])=O)cc2)c2ccc(C([O])=O)cc2)cc1. Metal clusters: 2 [O][C]O[Eu]1(O[C][O])O[C]O[Eu]234(O[C]O1)O[C]O[Eu]1(O[C]O[Eu](O[C][O])(O[C][O])O[C]O1)(O[C]O2)(O[C]O3)O[C]O4. The MOF has largest included sphere 10.56 A, density 1.01 g/cm3, surface area 3597.38 m2/g, accessible volume 0.55 cm3/g