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215791

Sigma-Aldrich

Niobium(V) chloride

99%

Synonym(s):

Niobium pentachloride

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About This Item

Linear Formula:
NbCl5
CAS Number:
10026-12-7
Molecular Weight:
270.17
EC Number:
233-059-8
MDL number:
MFCD00011127
UNSPSC Code:
12352302
PubChem Substance ID:
24852915
NACRES:
NA.23

Quality Level

100

assay

99%

form

powder

technique(s)

FTIR: suitable

bp

254 °C (lit.)

mp

204.7 °C (lit.)

density

2.75 g/mL at 25 °C (lit.)

SMILES string

Cl[Nb](Cl)(Cl)(Cl)Cl

InChI

1S/5ClH.Nb/h5*1H;/q;;;;;+5/p-5

InChI key

YHBDIEWMOMLKOO-UHFFFAOYSA-I

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General description

Niobium(V) chloride is a yellow crystalline solid with a high melting point. It is widely used in the field of catalysis, semiconductor devices, and batteries. It is a highly specialized Lewis acid in chemical synthesis, activating alkenes for the carbonyl-ene reaction and the Diels-Alder process.

Application

Niobium(V) chloride can be used:
  • As a precursor to prepare K2NbF7:Mn4+ red phosphors for white light-emitting diode(LED) devices.
  • As a Lewis acid to synthesize fluorescein dye derivatives for dye-sensitized solar cells.
  • As a dopant to enhance the thermoelectric properties of n-type tin selenide.
  • As a precursor to synthesize Nb2O5 microspheres and TiNb2O7 nanoparticles as high-rate capability and long-cycle-life anode materials for lithium-ion batteries .
Used to form mixed chloro-aryloxide compounds, such as [Nb(OC6H3-2,6-i-Pr2)2Cl3]2, which form pyridine or phosphine adducts with a distorted six-coordinate geometry.†

pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1B - STOT SE 3

target_organs

Respiratory system

supp_hazards

EUH014

Storage Class

8B - Non-combustible, corrosive hazardous materials

wgk_germany

WGK 1

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Janet R. Clark et al.
Inorganic chemistry, 36(17), 3623-3631 (1997-08-13)
The mixed chloro-aryloxide compounds [M(OC(6)H(3)Pr(i)(2)-2,6)(2)Cl(3)](2) (M = Nb (1a), Ta (1b); both structurally characterized) and [M(OC(6)H(3)Pr(i)(2)-2,6)(3)Cl(2)] (M = Nb (2a), Ta (2b)) react with pyridine (py) and PMe(2)Ph to produce a series of adducts cis-mer-[MCl(3)(OC(6)H(3)Pr(i)(2)-2,6)(2)(L)] (M, L: Nb, py (3a);

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