Niobium(IV) fluoride

Niobium(IV) fluoride
Names
IUPAC name
Niobium(IV) fluoride
Identifiers
13842-88-1 Yes
Properties
NbF4
Molar mass 168.9 g/mol
Appearance black solid
Melting point 350 °C (662 °F; 623 K) (decomposes)
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 Yes verify (what is: Yes/?)
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{\ 2 NbF_4 \rightarrow NbF_5 + NbF_3}(at 350 °C)[1]

References

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