215791

Niobium(V) chloride

99%

• Synonym(s): Niobium pentachloride
• 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

Properties

• 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

Description

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(OC_6H3-2,6-i-Pr₂)₂Cl₃]₂, which form pyridine or phosphine adducts with a distorted six-coordinate geometry.†

Safety Information

• Pictograms: GHS05,GHS07
• Signal Word: Danger
• Hazard Statements: H302,H314,H335
• Precautionary Statements: P260 - P271 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1B - STOT SE 3
• Target Organs: Respiratory system
• Supplementary Hazards: EUH014
• Storage Class Code: 8B - Non-combustible corrosive hazardous materials
• WGK: WGK 1
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves