Niobium(IV) fluoride

Niobium(IV) fluoride
Names
IUPAC name Niobium(IV) fluoride
Identifiers
CAS Number	13842-88-1^Y
Properties
Chemical formula	NbF₄
Molar mass	168.9 g/mol
Appearance	black solid
Melting point	350 °C (662 °F; 623 K) (decomposes)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is ^YN ?)
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.

Niobium compounds

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

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