Germanium tetrafluoride (GeF4) is a chemical compound of germanium and fluorine. It is a colorless gas.
Germanium tetrafluoride is formed by treating germanium with fluorine:
Alternatively germanium dioxide combines with hydrofluoric acid (HF):[3]
It is also formed during the thermal decomposition of a complex salt, Ba[GeF6]:[4]
Germanium tetrafluoride is a noncombustible, strongly fuming gas with a garlic-like odor. It reacts with water to form hydrofluoric acid and germanium dioxide. Decomposition occurs above 1000 °C.[5]
Reaction of GeF4 with fluoride sources produces GeF5− anions with octahedral coordination around Ge atom due to polymerization.[6] The structural characterization of a discrete trigonal bipyramidal GeF5− anion was achieved by a "naked" fluoride reagent 1,3-bis(2,6-diisopropylphenyl)imidazolium fluoride.[7]
In combination with disilane, germanium tetrafluoride is used for in the synthesis of SiGe.[1]
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