Materials Data on SiBr4 by Materials Project
SiBr4 is Silicon tetrafluoride-like structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four tetrabromosilane molecules. Si4+ is bonded in a tetrahedral geometry to four Br1- atoms. All Si–Br bond lengths are 2.21 Å. There are four inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a single-bond geometry to one Si4+ atom. In the second Br1- site, Br1- is bonded in a single-bond geometry to one Si4+ atom. In the third Br1- site, Br1- is bonded in a single-bond geometry to one Si4+ atom. In the fourth Br1- site, Br1- is bonded in a single-bond geometry to one Si4+ atom.
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