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ChemicalBook CAS DataBase List NIOBIUM(V) CHLORIDE
10026-12-7

NIOBIUM(V) CHLORIDE synthesis

2synthesis methods
Niobium pentachloride is obtained as an intermediate during extraction of niobium from its ores (see Niobium). Also, the pentachloride is obtained readily by direct chlorination of niobium metal at 300 to 350°C: 2Nb + 5Cl2 → 2NbCl5
The pentachloride also may be made by chlorination of niobium pentoxide in the presence of carbon at 300°C. The products, however, contain small amounts of niobium oxide trichloride, NbOCl3.
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Yield:10026-12-7 90%

Reaction Conditions:

in neat (no solvent)drying mixt. of K2NbF7 and MgCl2 at 150°C, heating mixt. in inert gas atmosphere at 750°C for 1 h;;

References:

[Gmelin Handbuch der Anorganischen Chemie,Gmelin Handbook: Nb: MVol.B1, 83, page 177 - 180]

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