CAS 10026-12-7 Niobium(V) chloride Powder NbCl5 used in catalytic
applications
Brief Description of Niobium(V) chloride Powder NbCl5
Niobium(V) chloride, also known as niobium pentachloride, is a yellow crystalline solid
It hydrolyzes in air, and samples are often contaminated with small
amounts of NbOCl3
It is often used as a precursor to other compounds of niobium.
NbCl5 may be purified by sublimation
Specification of Niobium(V) chloride Powder NbCl5
| Parameters | Specification | Results |
| Appearance | Farinose solid; purple black powder hexahedron | Conformed |
| Purity | 99.9%min | 99.95% |
Impurity Content Maximum (%) | Fe | Impurity 0.4Wt% max | 0.0010 |
| Al | 0.0001 |
| Cu | 0.0003 |
| Mo | 0.0008 |
| Si | 0.0005 |
| Mg | 0.0003 |
| Ca | 0.0002 |
| Ni | 0.0005 |
Application of Niobium(V) chloride Powder NbCl5
1. Niobium(V) chloride is the main precursor to the alkoxides of
niobium, which find niche uses in sol-gel processing.
2. It is also the precursor to many other laboratory reagents.
3. NbCl5 is a specialized Lewis acid in activating alkenes for the
carbonyl-ene reaction and the Diels-Alder reaction.
4. Niobium chloride can also generate N-acyliminium compounds from
certain pyrrolidines which are substrates for nucleophiles such as
allyltrimethylsilane, indole, or thesilyl enol rther of
benzophenone.
5. Used in catalytic applications
6. Applied in the production of chemically resistant optical coatings.
Properties of Niobium(V) chloride Powder NbCl5
White monoclinic crystal.
Soluble in alcohol, carbon tetrachloride, hydrochloric acid.
Water decomposition. Tidal solution.
Decomposition of hydrogen chloride in humid air
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