Germanium tetrabromide is an inorganic compound with the formula GeBr₄. It can be formed by reacting solid

germanium Germanium is a chemical element with the symbol Ge and atomic number 32. It is lustrous, hard-brittle, grayish-white and similar in appearance to silicon. It is a metalloid in the carbon group that is chemically similar to its group neighbors s ...

and gaseous

bromine Bromine is a chemical element with the symbol Br and atomic number 35. It is the third-lightest element in group 17 of the periodic table (halogens) and is a volatile red-brown liquid at room temperature that evaporates readily to form a simila ...

. :Ge + 2Br2 -> GeBr4 From this reaction, GeBr₄ has a

heat of formation In chemistry and thermodynamics, the standard enthalpy of formation or standard heat of formation of a compound is the change of enthalpy during the formation of 1 mole of the substance from its constituent elements in their reference state, with ...

of 83.3 kcal/mol. The compound is liquid at 25 °C, and forms an interlocking liquid structure. From room temperature down to −60 °C the structure takes on a cubic α form, whereas at lower temperatures it takes on a monoclinic β form.

References

Germanium(IV) compounds Bromides {{inorganic-compound-stub