Hafnium tetrachloride

Hafnium(IV) chloride
Names
IUPAC names
Hafnium(IV) chloride
Hafnium tetrachloride
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.463 Edit this at Wikidata
UNII
  • InChI=1S/4ClH.Hf/h4*1H;/q;;;;+4/p-4 checkY
    Key: PDPJQWYGJJBYLF-UHFFFAOYSA-J checkY
  • InChI=1/4ClH.Hf/h4*1H;/q;;;;+4/p-4
    Key: PDPJQWYGJJBYLF-XBHQNQODAR
  • Cl[Hf](Cl)(Cl)Cl
Properties
HfCl4
Molar mass 320.302 g/mol
Appearance white crystalline solid
Density 3.89 g/cm3[1]
Melting point 432 °C (810 °F; 705 K)
decomposes[2]
Vapor pressure 1 mmHg at 190 °C
Structure
Monoclinic, mP10[1]
C2/c, No. 13
a = 0.6327 nm, b = 0.7377 nm, c = 0.62 nm
4
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 irritant and corrosive
Flash point Non-flammable
Lethal dose or concentration (LD, LC):
2362 mg/kg (rat, oral)[3]
Safety data sheet (SDS) MSDS
Related compounds
Other anions
 Hafnium tetrafluoride
Hafnium(IV) bromide
Hafnium(IV) iodide
Other cations
 Titanium(IV) chloride
Zirconium(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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Hafnium(IV) chloride is the inorganic compound with the formula HfCl4. This colourless solid is the precursor to most hafnium organometallic compounds. It has a variety of highly specialized applications, mainly in materials science and as a catalyst.

  1. ^ a b Niewa R., Jacobs H. (1995) Z. Kristallogr. 210: 687
  2. ^ Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.66. ISBN 1-4398-5511-0.
  3. ^ "Hafnium compounds (as Hf)". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).