Top Qs
Timeline
Chat
Perspective

Niobium(V) fluoride

Chemical compound From Wikipedia, the free encyclopedia

Niobium(V) fluoride
Remove ads

Niobium(V) fluoride, also known as niobium pentafluoride, is the inorganic compound with the formula NbF5. It is a colorless solid.[1]

Quick facts Names, Identifiers ...
Remove ads

Preparation and structure

Niobium pentafluoride is obtained by treatment of any niobium compound with fluorine:[2]

2 Nb + 5 F2 → 2 NbF5
2 NbCl5 + 5 F2 → 2 NbF5 + 5 Cl2

As shown by X-ray crystallography, the solid consists of tetramers [NbF5]4. This structure is related to that for WOF4.[3]

Reactions

It reacts with hydrogen fluoride to give H2NbF7, a superacid. In hydrofluoric acid, NbF5 converts to [NbF7]2- and [NbF5O]2-. The relative solubility of K2[MFO] (M = Nb, Ta) is the basis of the Marignac process for separation of Nb and Ta.

NbCl5 forms a dimeric structure (edge-shared bioctahedron) in contrast to the corner-shared tetrameric structure of the fluoride.

References

Loading related searches...

Wikiwand - on

Seamless Wikipedia browsing. On steroids.

Remove ads