Tantalum(V) chloride

Tantalum(V) chloride
Names
IUPAC names
Tantalum(V) chloride
Tantalum pentachloride
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.028.869 Edit this at Wikidata
EC Number
  • 231-755-6
UNII
  • Key: OEIMLTQPLAGXMX-UHFFFAOYSA-I
  • InChI=1S/5ClH.Ta/h5*1H;/q;;;;;+5/p-5
  • Cl[Ta](Cl)(Cl)(Cl)Cl
Properties
TaCl5
Molar mass 358.213 g/mol
Appearance white monoclinic crystals[1]
Density 3.68 g/cm3
Melting point 216 °C (421 °F; 489 K)
Boiling point 239.4 °C (462.9 °F; 512.5 K) (decomposes)
reacts
Solubility chloroform, CCl4
+140.0×10−6 cm3/mol
Structure
Monoclinic, mS72
C2/m, No. 12
Thermochemistry
221.75 J K−1 mol−1
-858.98 kJ/mol
Hazards
GHS labelling:
GHS05: CorrosiveGHS07: Exclamation mark
Danger
H302, H314
P280, P305+P351+P338, P310
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
3
0
0
Flash point Non-flammable
Lethal dose or concentration (LD, LC):
1900 mg/kg (oral, rat)
Safety data sheet (SDS) External SDS
Related compounds
Other anions
 Tantalum(V) fluoride
Tantalum(V) bromide
Tantalum(V) iodide
Other cations
 Vanadium(IV) chloride
Niobium(V) chloride
Related compounds
 Tantalum(III) chloride, Tantalum(IV) chloride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Tantalum(V) chloride, also known as tantalum pentachloride, is an inorganic compound with the formula TaCl5. It takes the form of a white powder and is commonly used as a starting material in tantalum chemistry. It readily hydrolyzes to form tantalum(V) oxychloride (TaOCl3) and eventually tantalum pentoxide (Ta2O5); this requires that it be synthesised and manipulated under anhydrous conditions, using air-free techniques.

  1. ^ Lide, David R., ed. (2006). CRC Handbook of Chemistry and Physics (87th ed.). Boca Raton, FL: CRC Press. ISBN 0-8493-0487-3.