Germanium tetrafluoride

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.

[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.

NFPA 704 four-colored diamond Health 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gas Flammability 0: Will not burn. E.g. water Instability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorus Special hazard W: Reacts with water in an unusual or dangerous manner. E.g. sodium, sulfuric acid