ZnSi2C14N2H21O is BC8 structured and crystallizes in the cubic Ia-3d space group. The structure is zero-dimensional and consists of sixteen ZnSi2C14N2H21O clusters. Zn(1) is bonded to two equivalent N(1) and two equivalent O(1) atoms to form corner-sharing ZnN2O2 tetrahedra. Both Zn(1)-N(1) bond lengths are 2.03 Å. Both Zn(1)-O(1) bond lengths are 1.92 Å. Si(1) is bonded in a trigonal non-coplanar geometry to one C(4) and two equivalent C(6,7) atoms. The Si(1)-C(4) bond length is 1.88 Å. Both Si(1)-C(6,7) bond lengths are 1.86 Å. There are six inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one N(1), and one H(1) atom. The C(1)-C(2) bond length is 1.35 Å. The C(1)-N(1) bond length is 1.35 Å. The C(1)-H(1) bond length is 0.95 Å. In the second C site, C(3) is bonded in a distorted single-bond geometry to one C(4) and one H(3) atom. The C(3)-C(4) bond length is 1.39 Å. The C(3)-H(3) bond length is 0.95 Å. In the third C site, C(2) is bonded in a single-bond geometry to one C(1) and one H(2) atom. The C(2)-H(2) bond length is 0.95 Å. In the fourth C site, C(4) is bonded in a distorted trigonal planar geometry to one Si(1), one C(3), and one C(5) atom. The C(4)-C(5) bond length is 1.40 Å. In the fifth C site, C(6,7) is bonded to one Si(1); one H(7,8); and two equivalent H(5,6,9,10) atoms to form distorted corner-sharing CSiH3 tetrahedra. The C(6,7)-H(7,8) bond length is 0.98 Å. Both C(6,7)-H(5,6,9,10) bond lengths are 0.98 Å. In the sixth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one N(1), and one H(4) atom. The C(5)-N(1) bond length is 1.33 Å. The C(5)-H(4) bond length is 0.95 Å. N(1) is bonded in a trigonal planar geometry to one Zn(1), one C(1), and one C(5) atom. There are seven inequivalent H sites. In the first H site, H(11) is bonded in a single-bond geometry to one O(1) atom. The H(11)-O(1) bond length is 0.95 Å. In the second H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the third H site, H(2) is bonded in a single-bond geometry to one C(2) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(5) atom. In the fifth H site, H(5,6,9,10) is bonded in a single-bond geometry to one C(6,7) atom. In the sixth H site, H(3) is bonded in a single-bond geometry to one C(3) atom. In the seventh H site, H(7,8) is bonded in a single-bond geometry to one C(6,7) atom. O(1) is bonded in a distorted trigonal planar geometry to two equivalent Zn(1) and one H(11) atom. Linkers: 48 C[Si](C)(c1cccnc1)[Si](C)(C)c1cccnc1. Metal clusters: 9 O[Zn].O[Zn].O[Zn] ,7 O[Zn].O[Zn]O.[Zn]. The MOF has largest included sphere 6.10 A, density 0.97 g/cm3, surface area 5605.19 m2/g, accessible volume 0.55 cm3/g