Materials Data on SiH8(CBr)4 by Materials Project

SiH8(CBr)4 is Silicon tetrafluoride-derived structured and crystallizes in the tetragonal P-42_1c space group. The structure is zero-dimensional and consists of two tetrakis(bromomethyl)silane molecules. Si4+ is bonded in a tetrahedral geometry to four equivalent C2- atoms. All Si–C bond lengths are 1.89 Å. C2- is bonded to one Si4+, two H1+, and one Br1- atom to form distorted corner-sharing CSiH2Br tetrahedra. There is one shorter (1.09 Å) and one longer (1.10 Å) C–H bond length. The C–Br bond length is 1.97 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one C2- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one C2- atom. Br1- is bonded in a single-bond geometry to one C2- atom.