Английская Википедия:Germanium tetrafluoride

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Germanium tetrafluoride (GeF4) is a chemical compound of germanium and fluorine. It is a colorless gas.

Synthesis

Germanium tetrafluoride is formed by treating germanium with fluorine:

Ge + 2 F2 → GeF4

Alternatively germanium dioxide combines with hydrofluoric acid (HF):[1]

GeO2 + 4 HF → GeF4 + 2 H2O

It is also formed during the thermal decomposition of a complex salt, Ba[GeF6]:[2]

Ba(GeF6) → GeF4 + BaF2

Properties

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.[3]

Reaction of GeF4 with fluoride sources produces GeF5 anions with octahedral coordination around Ge atom due to polymerization.[4] 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.[5]

Uses

In combination with disilane, germanium tetrafluoride is used for in the synthesis of SiGe.[6]

References

Шаблон:Reflist

External links

Шаблон:Germanium compounds Шаблон:Fluorine compounds

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  4. Шаблон:Cite journal
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