<Tr> <Th_colspan="2"> Related compounds </Th> </Tr> <Tr> <Td> Related tetrahalosilanes </Td> <Td> Silicon tetrachloride Silicon tetrafluoride Silicon tetraiodide </Td> </Tr> <Tr> <Td> Related compounds </Td> <Td> Platinum (IV) bromide Tellurium tetrabromide Tetrabromomethane Tin (IV) bromide Titanium tetrabromide Zirconium (IV) bromide </Td> </Tr> <Tr> <Td_colspan="2"> Except where otherwise noted, data are given for materials in their standard state (at 25 ° C (77 ° F), 100 kPa). </Td> </Tr>

What is the molecular shape of silicon tetrabromide