Niobium(IV) fluoride

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Niobium(IV) fluoride
	IUPAC name Niobium(IV) fluoride
Identifiers
CAS number	13842-88-1^Y
	Properties
Molecular formula	NbF₄
Molar mass	168.9 g/mol
Appearance	black solid
Melting point	350°C(decomposes)
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Niobium(IV) fluoride is a chemical compound with the formula NbF₄; it is a nonvolatile black solid. It absorbs vapor strongly. It turns into NbO₂F in moist air. NbF₄ reacts with water to form a brown solution and a brown precipitate whose components are unknown. It is stable between 275°C and 325°C when heated in a vacuum. However, it disproportionates at 350°C rapidly to form niobium(V) fluoride and niobium(III) fluoride:

${\mathrm {\ 2NbF_{4}\rightarrow NbF_{5}+NbF_{3}}}$ (at 350°C)^[1]

References

↑ 张青莲 (1981). 无机化学丛书. Beijing: Science Press. p. 323. ISBN 7-03-002238-6.

v t e Niobium compounds

NbBr₅ NbC NbCl₄ NbCl₅ NbF₄ NbF₅ NbN NbO NbO₂ NbOCl₃ Nb₂O₅ NbS Nb₂S₃ NbS₂

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